1
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Niu M, Yang C, Leng M, Cao Q, Li M, Shen Z. Visible-Light-Driven Decarboxylative Coupling of 2 H-Indazoles with α-Keto Acids without Photocatalysts and Oxidants. J Org Chem 2024; 89:6159-6168. [PMID: 38642058 PMCID: PMC11077484 DOI: 10.1021/acs.joc.4c00176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2024] [Revised: 04/03/2024] [Accepted: 04/09/2024] [Indexed: 04/22/2024]
Abstract
An efficient synthesis of functionalized 3-acyl-2H-indazoles via visible-light-induced self-catalyzed energy transfer was developed. This method utilized a self-catalyzed energy transfer process between 2H-indazoles and α-keto acids, offering advantages like absence of photosensitizers, metal catalysts, and strong oxidants, broad substrate compatibility, and operational simplicity under mild conditions.
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Affiliation(s)
- Mengyu Niu
- College
of Chemical Engineering, Zhejiang University
of Technology, Hangzhou 310014, China
| | - Chen Yang
- College
of Chemical Engineering, Zhejiang University
of Technology, Hangzhou 310014, China
| | - Mingzhu Leng
- College
of Chemical Engineering, Zhejiang University
of Technology, Hangzhou 310014, China
| | - Qun Cao
- School
of Chemistry, University of Leicester, Leicester LE1 7RH, United Kingdom of Great Britain and Northern
Ireland
| | - Meichao Li
- College
of Chemical Engineering, Zhejiang University
of Technology, Hangzhou 310014, China
| | - Zhenlu Shen
- College
of Chemical Engineering, Zhejiang University
of Technology, Hangzhou 310014, China
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2
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Yang Z, Yu JT, Pan C. Recent advances in C-H functionalization of 2 H-indazoles. Org Biomol Chem 2022; 20:7746-7764. [PMID: 36178474 DOI: 10.1039/d2ob01463g] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
2H-Indazoles are one class of the most important nitrogen-containing heterocyclic compounds. The 2H-indazole motif is widely present in bioactive natural products and drug molecules that exhibit distinctive bioactivities. Therefore, much attention has been paid to access diverse 2H-indazole derivatives. Among them, the late-stage functionalization of 2H-indazoles via C-H activation is recognized as an efficient approach for increasing the complexity and diversity of 2H-indazole derivatives. In this review, we summarized recent achievements in the late-stage functionalization of 2H-indazoles, including the C3-functionalization of 2H-indazoles through transition metal-catalyzed C-H activation or a radical pathway, transition metal-catalyzed ortho C2'-H functionalization of 2H-indazoles and remote C-H functionalization at the benzene ring in 2H-indazoles.
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Affiliation(s)
- Zixian Yang
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Jin-Tao Yu
- School of Petrochemical Engineering, Changzhou University, Changzhou 213164, P. R. China.
| | - Changduo Pan
- School of Chemistry and Chemical Engineering, Jiangsu University of Technology, Changzhou 213001, P. R. China.
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3
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Mal S, Malik U, Mahapatra M, Mishra A, Pal D, Paidesetty SK. A review on synthetic strategy, molecular pharmacology of indazole derivatives, and their future perspective. Drug Dev Res 2022; 83:1469-1504. [PMID: 35971890 DOI: 10.1002/ddr.21979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 07/04/2022] [Accepted: 07/22/2022] [Indexed: 11/09/2022]
Abstract
With different nitrogen-containing heterocyclic moieties, Indazoles earn one of the places among the top investigated molecules in medicinal research. Indazole, an important fused aromatic heterocyclic system containing benzene and pyrazole ring with a chemical formula of C7 H6 N2 , is also called benzopyrazole. Indazoles consist of three tautomeric forms in which 1H-tautomers (indazoles) and 2H-tautomers (isoindazoles) exist in all phases. The tautomerism in indazoles greatly influences synthesis, reactivity, physical and even the biological properties of indazoles. The thermodynamic internal energy calculation of these tautomers points view 1H-indazole as the predominant and stable form over 2H-indazole. The natural source of indazole is limited and exists in alkaloidal nature (i.e., nigellidine, nigeglanine, nigellicine, etc.) found from Nigella plants. Some of the FDA-approved drugs like Axitinib, Entrectinib, Niraparib, Benzydamine, and Granisetron are being used to treat renal cell cancer, non-small cell lung cancer (NSCLC), epithelial ovarian cancer, chronic inflammation, chemotherapy-induced nausea, vomiting, and many more uses. Besides all these advantages regarding its biological activity, the main issue about indazoles is the less abundance in plant sources, and their synthetic derivatives also often face problems with low yield. In this review article, we discuss its chemistry, tautomerism along with their effects, different schematics for the synthesis of indazole derivatives, and their different biological activities.
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Affiliation(s)
- Suvadeep Mal
- Department of Pharmaceutical Chemistry, Siksha 'O' Anusandhan University (Deemed to be University), Bhubaneswar, Odisha, India
| | - Udita Malik
- Department of Pharmacy, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, Chhattisgarh, India
| | - Monalisa Mahapatra
- Department of Pharmaceutical Chemistry, Siksha 'O' Anusandhan University (Deemed to be University), Bhubaneswar, Odisha, India
| | | | - Dilipkumar Pal
- Department of Pharmacy, Guru Ghasidas Vishwavidyalaya (A Central University), Bilaspur, Chhattisgarh, India
| | - Sudhir K Paidesetty
- Department of Pharmaceutical Chemistry, Siksha 'O' Anusandhan University (Deemed to be University), Bhubaneswar, Odisha, India
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4
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Recent Strategies in Transition-Metal-Catalyzed Sequential C–H Activation/Annulation for One-Step Construction of Functionalized Indazole Derivatives. Molecules 2022; 27:molecules27154942. [PMID: 35956893 PMCID: PMC9370621 DOI: 10.3390/molecules27154942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 11/17/2022] Open
Abstract
Designing new synthetic strategies for indazoles is a prominent topic in contemporary research. The transition-metal-catalyzed C–H activation/annulation sequence has arisen as a favorable tool to construct functionalized indazole derivatives with improved tolerance in medicinal applications, functional flexibility, and structural complexity. In the current review article, we aim to outline and summarize the most common synthetic protocols to use in the synthesis of target indazoles via a transition-metal-catalyzed C–H activation/annulation sequence for the one-step synthesis of functionalized indazole derivatives. We categorized the text according to the metal salts used in the reactions. Some metal salts were used as catalysts, and others may have been used as oxidants and/or for the activation of precatalysts. The roles of some metal salts in the corresponding reaction mechanisms have not been identified. It can be expected that the current synopsis will provide accessible practical guidance to colleagues interested in the subject.
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5
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Mishra DR, Panda BS, Nayak S, Panda J, Mohapatra S. Recent Advances in the Synthesis of 5‐Membered
N
‐Heterocycles via Rhodium Catalysed Cascade Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202200531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Deepak R. Mishra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Bhabani S. Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Jasmine Panda
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory Department of Chemistry Ravenshaw University Cuttack 753003 Odisha India
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6
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Wang B, Zhong X, Yao H, Deng R, Yan Z, Gao M, Sen L. Direct alkylation and acylation of 2H‐indazoles using aldehydes under metal‐free conditions. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bingqing Wang
- Nanchang University - Qianhu Campus: Nanchang University department of chemistry CHINA
| | - Xiaoyang Zhong
- Nanchang University - Qianhu Campus: Nanchang University department of chemistry CHINA
| | - Hua Yao
- Nanchang University - Qianhu Campus: Nanchang University department of chemistry CHINA
| | - Ruihong Deng
- Nanchang University - Qianhu Campus: Nanchang University department of chemistry CHINA
| | - Zhaohua Yan
- Nanchang University - Qianhu Campus: Nanchang University department of chemistry CHINA
| | - Mengjiao Gao
- Nanchang University Medical College: Medical College of Nanchang University department of medical CHINA
| | - Lin Sen
- Nanchang University Department of Chemistry Nangchang University 330000 Nangchang CHINA
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7
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He Y, Huang Z, Wu K, Ma J, Zhou YG, Yu Z. Recent advances in transition-metal-catalyzed carbene insertion to C-H bonds. Chem Soc Rev 2022; 51:2759-2852. [PMID: 35297455 DOI: 10.1039/d1cs00895a] [Citation(s) in RCA: 72] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
C-H functionalization has been emerging as a powerful method to establish carbon-carbon and carbon-heteroatom bonds. Many efforts have been devoted to transition-metal-catalyzed direct transformations of C-H bonds. Metal carbenes generated in situ from transition-metal compounds and diazo or its equivalents are usually applied as the transient reactive intermediates to furnish a catalytic cycle for new C-C and C-X bond formation. Using this strategy compounds from unactivated simple alkanes to complex molecules can be further functionalized or transformed to multi-functionalized compounds. In this area, transition-metal-catalyzed carbene insertion to C-H bonds has been paid continuous attention. Diverse catalyst design strategies, synthetic methods, and potential applications have been developed. This critical review will summarize the advance in transition-metal-catalyzed carbene insertion to C-H bonds dated up to July 2021, by the categories of C-H bonds from aliphatic C(sp3)-H, aryl (aromatic) C(sp2)-H, heteroaryl (heteroaromatic) C(sp2)-H bonds, alkenyl C(sp2)-H, and alkynyl C(sp)-H, as well as asymmetric carbene insertion to C-H bonds, and more coverage will be given to the recent work. Due to the rapid development of the C-H functionalization area, future directions in this topic are also discussed. This review will give the authors an overview of carbene insertion chemistry in C-H functionalization with focus on the catalytic systems and synthetic applications in C-C bond formation.
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Affiliation(s)
- Yuan He
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. .,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Zilong Huang
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. .,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Kaikai Wu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China.
| | - Juan Ma
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. .,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yong-Gui Zhou
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China.
| | - Zhengkun Yu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, P. R. China. .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, P. R. China.,Innovation Academy for Green Manufacture, Chinese Academy of Sciences, Beijing 100190, P. R. China
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8
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Li C, Zhong Q, Tang S, Wang L, Li P, Li H. Electrochemical formal [3 + 2] cycloaddition of azobenzenes with hexahydro-1,3,5-triazines. Org Chem Front 2022. [DOI: 10.1039/d2qo00530a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A catalyst-free electrochemical [3 + 2] cycloaddition of azobenzenes with hexahydro-1,3,5-triazines without an external oxidant has been developed for constructing the 1,2,4-triazolidine skeleton.
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Affiliation(s)
- Chao Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Qiang Zhong
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Shujun Tang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lei Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
- Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, P. R. China
| | - Pinhua Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Hongji Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
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9
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Zhang W, Li C, Wang B, Gao H, Li H. Rh(III)-Catalyzed Annulation of Azobenzenes with Vinylene Carbonate. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202107038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Liao X, Zhou Y, Ai C, Ye C, Chen G, Yan Z, Lin S. SO2F2-mediated oxidation of primary and tertiary amines with 30% aqueous H2O2 solution. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153457] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Rhodium-catalyzed directed C–H functionalization of 2-arylindazoles with diazotized Meldrum's acid. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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12
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Zhou Y, Zhao P, Wang LS, Yu XX, Huang C, Wu YD, Wu AX. Direct C-C Bond Cleavage of 1,3-Dicarbonyl Compounds as a Single-Carbon Synthon: Synthesis of 2-Aryl-4-quinolinecarboxylates. Org Lett 2021; 23:6461-6465. [PMID: 34346696 DOI: 10.1021/acs.orglett.1c02267] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel [2 + 1 + 3] cyclization reaction for the synthesis of 2-aryl-4-quinolinecarboxylates from aryl methyl ketones, arylamines, and 1,3-dicarbonyl compounds has been established. This metal-free process achieved the C-C bond cleavage of 1,3-dicarbonyl compounds directly as a single-carbon synthon. The reaction is highly efficient and has good substrate compatibility while operating under mild conditions. This method has good practicability and successfully realized the synthesis of bioactive molecules.
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Affiliation(s)
- You Zhou
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Peng Zhao
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Li-Sheng Wang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Xiao-Xiao Yu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Chun Huang
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Yan-Dong Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
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13
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Bera S, Roy S, Pal SC, Anoop A, Samanta R. Iridium(III)-Catalyzed Intermolecular Mild N-Arylation of Aliphatic Amides Using Quinoid Carbene: A Migratory Insertion-Based Approach. ACS Catal 2021. [DOI: 10.1021/acscatal.1c02653] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Satabdi Bera
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Saikat Roy
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Shyam Chand Pal
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Anakuthil Anoop
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Rajarshi Samanta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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14
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Park MS, Moon K, Oh H, Lee JY, Ghosh P, Kang JY, Park JS, Mishra NK, Kim IS. Synthesis of (2 H)-Indazoles and Dihydrocinnolinones through Annulation of Azobenzenes with Vinylene Carbonate under Rh(III) Catalysis. Org Lett 2021; 23:5518-5522. [PMID: 34228466 DOI: 10.1021/acs.orglett.1c01866] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The Rh(III)-catalyzed C-H functionalization and subsequent intramolecular cyclization between azobenzenes and vinylene carbonate is described herein. Depending on the electronic property of azobenzenes, this transformation results in the formation of (2H)-indazoles or dihydrocinnolin-4-ones through the generation of ortho-alkylated azo-intermediates followed by decarboxylation. Surprisingly, vinylene carbonate acts as an acetaldehyde or acetyl surrogate to enable the [4 + 1] or [4 + 2] annulation reaction. This transformation is characterized by its mild reaction conditions, simplicity, and excellent functional group compatibility.
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Affiliation(s)
- Min Seo Park
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyeongwon Moon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Harin Oh
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ji Yoon Lee
- Department of Chemistry, Sookmyung Women's University, Seoul 04310, Republic of Korea
| | - Prithwish Ghosh
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ju Young Kang
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jung Su Park
- Department of Chemistry, Sookmyung Women's University, Seoul 04310, Republic of Korea
| | | | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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15
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Li ZH, Wang WB, Qin JJ, Ye LX, He JY, Xie YY. Silver-catalyzed radical reaction of 2H-indazoles with 1,3-dicarbonyl compounds to access 3-dicarbonyl indazoles. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132227] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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16
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Abstract
A simple approach to synthesizing 1,2-bis(4-(1,3-dioxolan-2-yl)phenyl)diazene oxide was developed in this study, based on glucose as an eco-friendly reductant.
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17
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Chang M, Chen K. Bi(OTf)
3
‐Mediated (4+1) Annulation of α‐Sulfonyl
o
‐Hydroxyacetophenones with α‐Hydroxy Arylketones to Access Sulfonyl 2‐Aroylbenzofurans. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Meng‐Yang Chang
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung 807 Taiwan
- Department of Medical Research Kaohsiung Medical University Hospital Kaohsiung 807 Taiwan
| | - Kuan‐Ting Chen
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung 807 Taiwan
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18
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Rh(III)-catalyzed annulation of azobenzenes and α-Cl ketones toward 3-acyl-2H-indazoles. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2020.12.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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19
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Budeev A, Kantin G, Dar’in D, Krasavin M. Diazocarbonyl and Related Compounds in the Synthesis of Azoles. Molecules 2021; 26:2530. [PMID: 33926128 PMCID: PMC8123665 DOI: 10.3390/molecules26092530] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 12/15/2022] Open
Abstract
Diazocarbonyl compounds have found numerous applications in many areas of chemistry. Among the most developed fields of diazo chemistry is the preparation of azoles from diazo compounds. This approach represents a useful alternative to more conventional methods of the synthesis of azoles. A comprehensive review on the preparation of various azoles (oxazoles, thiazoles, imidazoles, pyrazoles, triazoles, and tetrazoles) from diazocarbonyl and related compounds is presented for the first time along with discussion of advantages and disadvantages of «diazo» approaches to azoles.
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Affiliation(s)
| | | | - Dmitry Dar’in
- Institute of Chemistry, St. Petersburg State University, 198504 Peterhof, Russia; (A.B.); (G.K.)
| | - Mikhail Krasavin
- Institute of Chemistry, St. Petersburg State University, 198504 Peterhof, Russia; (A.B.); (G.K.)
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20
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Shi C, Xu B, Fang X, Yu X, Jin H, Wang S. Synthesis of Unsymmetrical Azoxyarenes via Copper‐Catalyzed Aerobic Oxidative Dehydrogenative Coupling of Anilines with Nitrosoarenes. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chongyang Shi
- College of Chemistry and Materials Engineering Wenzhou University, Chashan Town Wenzhou 325035 People's Republic of China
| | - Boxia Xu
- College of Chemistry and Materials Engineering Wenzhou University, Chashan Town Wenzhou 325035 People's Republic of China
| | - Xiaolan Fang
- College of Chemistry and Materials Engineering Wenzhou University, Chashan Town Wenzhou 325035 People's Republic of China
| | - Xiaochun Yu
- College of Chemistry and Materials Engineering Wenzhou University, Chashan Town Wenzhou 325035 People's Republic of China
| | - Huile Jin
- College of Chemistry and Materials Engineering Wenzhou University, Chashan Town Wenzhou 325035 People's Republic of China
| | - Shun Wang
- College of Chemistry and Materials Engineering Wenzhou University, Chashan Town Wenzhou 325035 People's Republic of China
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21
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Wang C, Chen F, Qian P, Cheng J. Recent advances in the Rh-catalyzed cascade arene C-H bond activation/annulation toward diverse heterocyclic compounds. Org Biomol Chem 2021; 19:1705-1721. [PMID: 33537690 DOI: 10.1039/d0ob02377a] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The Rh-catalyzed C-H bond activation/annulation provides a new strategy for the synthesis of new frameworks. In this review, we summarize the recent research on the Rh-catalyzed cascade arene C-H bond activation/annulation toward diverse heterocyclic compounds. The application, scope, limitations and mechanism of these transformations are also discussed.
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Affiliation(s)
- Chang Wang
- Institute of New Materials & Industry Technology, College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Fan Chen
- Institute of New Materials & Industry Technology, College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Pengcheng Qian
- Institute of New Materials & Industry Technology, College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
| | - Jiang Cheng
- Institute of New Materials & Industry Technology, College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
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22
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Khalili D, Evazi R, Neshat A, Aboonajmi J. Copper(I) Complex of Dihydro Bis(2‐Mercapto Benzimidazolyl) Borate as an Efficient Homogeneous Catalyst for the Synthesis of 2
H
‐Indazoles and 5‐Substituted 1
H
‐Tetrazoles. ChemistrySelect 2021. [DOI: 10.1002/slct.202004387] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Dariush Khalili
- Department of Chemistry, College of Sciences Shiraz University Shiraz 71467-13565 Iran
| | - Roya Evazi
- Department of Chemistry, College of Sciences Shiraz University Shiraz 71467-13565 Iran
| | - Abdollah Neshat
- Department of Chemistry Institute for Advanced Studies in Basic Sciences (IASBS) Zanjan 45137-66731 Iran
| | - Jasem Aboonajmi
- Department of Chemistry, College of Sciences Shiraz University Shiraz 71467-13565 Iran
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23
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Kumar S, Nunewar S, Oluguttula S, Nanduri S, Kanchupalli V. Recent advances in Rh(iii)/Ir(iii)-catalyzed C–H functionalization/annulation via carbene migratory insertion. Org Biomol Chem 2021; 19:1438-1458. [DOI: 10.1039/d0ob02309d] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The review highlighted diverse annulations, including nitrogen, oxygen, sulfur heterocycles and carbocylizations via Rh(iii)/Ir(iii)-catalyzed C–H functionalization/annulation with various arene and carbene precursors.
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Affiliation(s)
- Sanjeev Kumar
- Department of Process Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500 037
- India
| | - Saiprasad Nunewar
- Department of Process Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500 037
- India
| | - Srilekha Oluguttula
- Department of Process Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500 037
- India
| | - Srinivas Nanduri
- Department of Process Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500 037
- India
| | - Vinaykumar Kanchupalli
- Department of Process Chemistry
- National Institute of Pharmaceutical Education and Research (NIPER)
- Hyderabad 500 037
- India
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24
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Jin GQ, Gao WX, Zhou YB, Liu MC, Wu HY. Efficient synthesis of 2-aryl-2H-indazoles by base-catalyzed benzyl C-H deprotonation and cyclization. Chem Commun (Camb) 2020; 56:14617-14620. [PMID: 33151211 DOI: 10.1039/d0cc05862a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A straightforward and efficient method for the preparation of 2-aryl-2H-indazoles from ortho-alkyl substituted azoxybenzenes is presented. The reaction proceeds through base-catalyzed benzyl C-H deprotonation and cyclization to afford 2-aryl-2H-indazoles in good yields. This synthetic strategy can be applied to the construction of several fluorescent and bioactive molecules.
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Affiliation(s)
- Guo-Qing Jin
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, China.
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25
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Zhang C, Zhao H, Li Z, Liang Z, Qi S, Cai M, Zhang S, Jia X, Zhang G, Hu ML. Rapid access to 3-aminoindazoles from nitriles with hydrazines: a strategy to overcome the basicity barrier imparted by hydrazines. Chem Commun (Camb) 2020; 56:9521-9524. [PMID: 32686796 DOI: 10.1039/d0cc03789c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A practical and efficient base mediated synthesis of free 3-aminoindazoles has been developed from the reaction of nitriles with hydrazines, which successfully overcomes the difficulty of using aromatic hydrazines as substrates and allows for the synthesis of a wide range of N-aryl substituted free 3-aminoindazoles in moderate to excellent yields under mild conditions in one-pot. This finding provides a rapid and useful strategy for the synthesis of various functionalized 3-aminoindazole derivatives.
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Affiliation(s)
- Chunyan Zhang
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Haowen Zhao
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Zehua Li
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Zuyu Liang
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Shuo Qi
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Mingyu Cai
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Sheng Zhang
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Xiaofei Jia
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Guoying Zhang
- Key Laboratory of Sensor Analysis of Tumor Marker, Ministry of Education, Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Analytical Chemistry for Life Science in Universities of Shandong, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, P. R. China.
| | - Mao-Lin Hu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, P. R. China.
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26
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Li J, Shi L, Zhang SP, Wang XY, Zhu X, Hao XQ, Song MP. Rh(III)-Catalyzed C-H Cyanation of 2 H-Indazole with N-Cyano- N-phenyl- p-toluenesulfonamide. J Org Chem 2020; 85:10835-10845. [PMID: 32692175 DOI: 10.1021/acs.joc.0c01386] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A Rh(III)-catalyzed direct cyanation of 2H-indazoles with N-cyano-N-phenyl-p-toluenesulfonamide has been realized via a chelation-assisted strategy. The methodology enables regioselective access to various ortho-cyanated phenylindazoles in good yields with a broad substrate scope and good functional group compatibility. The obtained cyanated indazoles could further be converted into other value-added chemicals. Importantly, the current protocol is featured with several characteristics, including a novel cyanating agent, good regioselectivity, and operational convenience.
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Affiliation(s)
- Jing Li
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Linlin Shi
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Shu-Ping Zhang
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xu-Yan Wang
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry, Zhengzhou University, No. 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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27
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Janardhanan JC, Bhaskaran RP, Praveen VK, Manoj N, Babu BP. Transition‐Metal‐Catalyzed Syntheses of Indazoles. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000300] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jith C. Janardhanan
- Department of Applied Chemistry and Inter University Centre for Nanomaterials and Devices (IUCND) Cochin University of Science and Technology (CUSAT) Cochin Kerala 682022 India
- Chemical Science and Technology Division CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) Thiruvananthapuram Kerala 695019 India
| | - Rasmi P. Bhaskaran
- Department of Chemistry National Institute of Technology Karnataka (NITK) Surathkal Karnataka 575025 India
| | - Vakayil K. Praveen
- Chemical Science and Technology Division CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) Thiruvananthapuram Kerala 695019 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Narayanapillai Manoj
- Department of Applied Chemistry and Inter University Centre for Nanomaterials and Devices (IUCND) Cochin University of Science and Technology (CUSAT) Cochin Kerala 682022 India
| | - Beneesh P. Babu
- Department of Chemistry National Institute of Technology Karnataka (NITK) Surathkal Karnataka 575025 India
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28
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Das D, Sahoo G, Biswas A, Samanta R. Rh
III
‐Catalyzed Synthesis of Highly Substituted 2‐Pyridones using Fluorinated Diazomalonate. Chem Asian J 2020; 15:360-364. [DOI: 10.1002/asia.201901620] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Indexed: 01/13/2023]
Affiliation(s)
- Debapratim Das
- Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Gopal Sahoo
- Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Aniruddha Biswas
- Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur 721302 India
| | - Rajarshi Samanta
- Department of ChemistryIndian Institute of Technology Kharagpur Kharagpur 721302 India
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29
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Bhat AH, Alavi S, Grover HK. Tandem Carbenoid C-H Functionalization/Conia-ene Cyclization of N-Propargyl Indoles Generates Pyrroloindoles under Cooperative Rh(II)/Zn(II) Catalysis. Org Lett 2020; 22:224-229. [PMID: 31854993 DOI: 10.1021/acs.orglett.9b04210] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The decomposition of diazodicarbonyl compounds in the presence of various metal catalysts has become a reliable method for the functionalization of indoles via carbenoid intermediates. Exploiting the nucleophilic reactivity of the in situ generated malonic ester product formed, we herein report a tandem C-H functionalization/Conia-ene cyclization of N-alkyne tethered indoles. This double functionalization of diazodicarbonyls generates a range of pyrrolo[1,2-a]-, pyrido[1,2-a]-, and azepino[1,2-a]indole products with good synthetic efficiency.
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Affiliation(s)
- Aabid H Bhat
- Department of Chemistry , Memorial University of Newfoundland , St. John's , Newfoundland A1B 3X7 , Canada
| | - Sima Alavi
- Department of Chemistry , Memorial University of Newfoundland , St. John's , Newfoundland A1B 3X7 , Canada
| | - Huck K Grover
- Department of Chemistry , Memorial University of Newfoundland , St. John's , Newfoundland A1B 3X7 , Canada
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30
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Liu L, Jiang P, Liu Y, Du H, Tan J. Direct radical alkylation and acylation of 2H-indazoles using substituted Hantzsch esters as radical reservoirs. Org Chem Front 2020. [DOI: 10.1039/d0qo00507j] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A platform approach for the direct synthesis of 3-substituted 2H-indazole derivatives has been developed using a Ag(i)/Na2S2O8 system.
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Affiliation(s)
- Li Liu
- Department of Organic Chemistry
- College of Chemistry
- Beijing University of Chemical Technology (BUCT)
- Beijing 100029
- China
| | - Pengxing Jiang
- Department of Organic Chemistry
- College of Chemistry
- Beijing University of Chemical Technology (BUCT)
- Beijing 100029
- China
| | - Yongguo Liu
- Beijing Key Laboratory of Flavour Chemistry
- Beijing Technology and Business University (BTBU)
- Beijing 100048
- China
| | - Hongguang Du
- Department of Organic Chemistry
- College of Chemistry
- Beijing University of Chemical Technology (BUCT)
- Beijing 100029
- China
| | - Jiajing Tan
- Department of Organic Chemistry
- College of Chemistry
- Beijing University of Chemical Technology (BUCT)
- Beijing 100029
- China
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31
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Belligund K, Mathew T, Hunt JR, Nirmalchandar A, Haiges R, Dawlaty J, Prakash GKS. Photochemistry of 2-Nitroarenes: 2-Nitrophenyl-α-trifluoromethyl Carbinols as Synthons for Fluoroorganics. J Am Chem Soc 2019; 141:15921-15931. [PMID: 31556624 DOI: 10.1021/jacs.9b07241] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Facile synthesis of a new series of 2,2'-bis(trifluoroacetyl) azoxybenzene derivatives and trifluoromethylated benzo[c]isoxazoline systems, along with trifluoroacetyl nitrosobenzene derivatives was achieved by solvent controlled photolysis of appropriate 2-nitrobenzyl alcohols. Corresponding photoactive 2-nitrobenzyl chromophore plays a distinct role in this photosynthetic process, while, quite unprecedented, pertinent fluoromethyl substitution leads to high value fluoromethylated products, whose direct access is not feasible by common synthetic protocols. The significance of fluorine and fluoroalkyl substitution and its prominent biological effects makes this new photochemical approach an important discovery in synthetic methodology. Plausible mechanistic pathways involved in the formation of the products during steady-state photolysis are further established by picosecond laser flash photolysis experiments.
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Affiliation(s)
- Kavita Belligund
- Loker Hydrocarbon Research Institute and Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States.,Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States
| | - Thomas Mathew
- Loker Hydrocarbon Research Institute and Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States.,Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States
| | - Jonathan R Hunt
- Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States
| | - Archith Nirmalchandar
- Loker Hydrocarbon Research Institute and Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States.,Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States
| | - Ralf Haiges
- Loker Hydrocarbon Research Institute and Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States.,Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States
| | - Jahan Dawlaty
- Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States
| | - G K Surya Prakash
- Loker Hydrocarbon Research Institute and Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States.,Department of Chemistry , University of Southern California , Los Angeles , California 90089-1661 , United States
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32
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Kaldhi D, Gujjarappa R, Vodnala N, Kabi AK, Aljaar N, Malakar CC. Mo(VI)-catalyzed Synthesis of 2-Aryl-2 H-indazoles Using Pinacol Mediated Deoxygenation of Nitroaromatics. CHEM LETT 2019. [DOI: 10.1246/cl.190490] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Dhananjaya Kaldhi
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal – 795004, Manipur, India
| | - Raghuram Gujjarappa
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal – 795004, Manipur, India
| | - Nagaraju Vodnala
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal – 795004, Manipur, India
| | - Arup K. Kabi
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal – 795004, Manipur, India
| | - Nayyef Aljaar
- Chemistry Department, the Hashemite University, P. O. Box 150459, Zarqa 13115, Jordan
| | - Chandi C. Malakar
- Department of Chemistry, National Institute of Technology Manipur, Langol, Imphal – 795004, Manipur, India
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33
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Dong Y, Zhang X, Chen J, Zou W, Lin S, Xu H. Switching the site-selectivity of C-H activation in aryl sulfonamides containing strongly coordinating N-heterocycles. Chem Sci 2019; 10:8744-8751. [PMID: 31762973 PMCID: PMC6857669 DOI: 10.1039/c9sc03691a] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 08/12/2019] [Indexed: 11/21/2022] Open
Abstract
The limitations of arene C-H functionalization of aryl sulfonamides containing strongly coordinating N-heterocycles were overcome using a Rh(iii) catalyst. The site-selectivity of C-H carbenoid functionalization at the ortho position relative to either the sulfonamide or N-heterocycle directing groups was elegantly switched using solvents of different polarities and different additive concentrations. Importantly, sulfonamide-group-directed ortho-C-H carbenoid functionalization tolerated strongly coordinating N-heterocycles, including pyridine, pyrrole, thiazole, pyrimidine, and pyrazine. Density functional theory (DFT) calculations were performed to rationalize the reaction mechanisms and the influence of reaction polarity.
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Affiliation(s)
- Yi Dong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China . .,Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
| | - XuePeng Zhang
- Lab of Computational and Drug Design , Peking University Shenzhen Graduate School , Shenzhen 518055 , China
| | - Jiajing Chen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China . .,Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
| | - Wenxing Zou
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China . .,Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
| | - Songwen Lin
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China . .,Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
| | - Heng Xu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China . .,Beijing Key Laboratory of Active Substances Discovery and Druggability Evaluation , Institute of Materia Medica , Chinese Academy of Medical Sciences , Peking Union Medical College , Beijing 100050 , China
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34
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Kondo M, Takizawa S, Jiang Y, Sasai H. Room-Temperature, Metal-Free, and One-Pot Preparation of 2H-Indazoles through a Mills Reaction and Cyclization Sequence. Chemistry 2019; 25:9866-9869. [PMID: 31150138 DOI: 10.1002/chem.201902242] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Indexed: 11/05/2022]
Abstract
The Mills reaction and cyclization of readily available 2-aminobenzyl alcohols and nitrosobenzenes using thionyl bromide provided 2H-indazoles in up to 88 % yields. In the metal-free process, acetic acid played a crucial role for the both Mills reaction and cyclization. A brominated 2H-indazole could also be obtained through the one-pot sequence.
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Affiliation(s)
- Masaru Kondo
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, 567-0047, Japan
| | - Shinobu Takizawa
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, 567-0047, Japan.,Artificial Intelligence Research Center, ISIR, Osaka University, Osaka, 567-0047, Japan
| | - Yuzhao Jiang
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, 567-0047, Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka, Ibaraki-shi, Osaka, 567-0047, Japan
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35
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Xiao Y, Xiong H, Sun S, Yu J, Cheng J. Rh(iii)-Catalyzed dual C-H functionalization of 3-(1H-indol-3-yl)-3-oxopropanenitriles with sulfoxonium ylides or diazo compounds toward polysubstituted carbazoles. Org Biomol Chem 2019; 16:8715-8718. [PMID: 30411773 DOI: 10.1039/c8ob02145g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rhodium-catalyzed annulation of 3-(1H-indol-3-yl)-3-oxopropanenitriles with sulfoxonium ylides or diazo compounds has been developed, leading to a series of polysubstituted carbazoles in moderate to good yields. This procedure proceeded with formal Rh(iii)-catalyzed (4 + 2) cycloaddition, with the functionalization of 2-C-H bonds of indole in a step-economical procedure. Additionally, this reaction could also be conducted under acidic conditions when diazo compounds were employed as the reaction partners, which was a complement to the annulation of sulfoxonium ylides under weak basic conditions.
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Affiliation(s)
- Yan Xiao
- School of Petrochemical Engineering, Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, Changzhou University, Changzhou 213164, P. R. China.
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36
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Chun R, Kim S, Han SH, Han S, Lee SH, Mishra NK, Jung YH, Kim HS, Kim IS. Synthesis of (2
H
)‐Indazoles from Azobenzenes Using Paraformaldehyde as a One‐Carbon Synthon. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801547] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Rina Chun
- School of PharmacySungkyunkwan University Suwon 16419 Republic of Korea
| | - Saegun Kim
- School of PharmacySungkyunkwan University Suwon 16419 Republic of Korea
| | - Sang Hoon Han
- School of PharmacySungkyunkwan University Suwon 16419 Republic of Korea
| | - Sangil Han
- School of PharmacySungkyunkwan University Suwon 16419 Republic of Korea
| | - Suk Hun Lee
- School of PharmacySungkyunkwan University Suwon 16419 Republic of Korea
| | | | - Young Hoon Jung
- School of PharmacySungkyunkwan University Suwon 16419 Republic of Korea
| | - Hyung Sik Kim
- School of PharmacySungkyunkwan University Suwon 16419 Republic of Korea
| | - In Su Kim
- School of PharmacySungkyunkwan University Suwon 16419 Republic of Korea
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37
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Wang N, Liu L, Xu W, Zhang M, Huang Z, Shi D, Zhao Y. Rhodium(III)-Catalyzed Oxidative Annulation of Ketoximes with Sulfonamide: A Direct Approach to Indazoles. Org Lett 2019; 21:365-368. [PMID: 30618258 DOI: 10.1021/acs.orglett.8b03488] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A rhodium(III)-catalyzed intermolecular C-H amination of ketoxime and iodobenzene diacetate-enabled N-N bond formation in the synthesis of indazoles has been developed. A variety of functional groups were well tolerated, providing the corresponding products in moderate to good yields. Moreover, the nitro-substituted ketoximes are well compatible in this reaction, leading to the corresponding products in moderate to good yields.
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Affiliation(s)
- Ning Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering , Soochow Unversity , 199 Renai Street , Suzhou , Jiangsu 215123 , China
| | - Lingling Liu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering , Soochow Unversity , 199 Renai Street , Suzhou , Jiangsu 215123 , China
| | - Wentao Xu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering , Soochow Unversity , 199 Renai Street , Suzhou , Jiangsu 215123 , China
| | - Mengye Zhang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering , Soochow Unversity , 199 Renai Street , Suzhou , Jiangsu 215123 , China
| | - Zhibin Huang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering , Soochow Unversity , 199 Renai Street , Suzhou , Jiangsu 215123 , China
| | - Daqing Shi
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering , Soochow Unversity , 199 Renai Street , Suzhou , Jiangsu 215123 , China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry and Chemical Engineering , Soochow Unversity , 199 Renai Street , Suzhou , Jiangsu 215123 , China
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38
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Xie W, Chen X, Shi J, Li J, Liu R. Synthesis of 1-aminoindole derivatives via Rh(iii)-catalyzed annulation reactions of hydrazines with sulfoxonium ylides. Org Chem Front 2019. [DOI: 10.1039/c9qo00524b] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Rhodium(iii)-catalyzed C–H functionalization followed by intramolecular annulation reactions between hydrazines and sulfoxonium ylides is described.
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Affiliation(s)
- Wucheng Xie
- Foshan City Engineering & Technology Research Center for Bioactive Natural Products & Functional Chemicals
- School of Environment and Chemical Engineering
- Foshan University
- Foshan 528000
- China
| | - Xin Chen
- Foshan City Engineering & Technology Research Center for Bioactive Natural Products & Functional Chemicals
- School of Environment and Chemical Engineering
- Foshan University
- Foshan 528000
- China
| | - Junjun Shi
- Foshan City Engineering & Technology Research Center for Bioactive Natural Products & Functional Chemicals
- School of Environment and Chemical Engineering
- Foshan University
- Foshan 528000
- China
| | - Jieshen Li
- Foshan City Engineering & Technology Research Center for Bioactive Natural Products & Functional Chemicals
- School of Environment and Chemical Engineering
- Foshan University
- Foshan 528000
- China
| | - Riyao Liu
- Foshan City Engineering & Technology Research Center for Bioactive Natural Products & Functional Chemicals
- School of Environment and Chemical Engineering
- Foshan University
- Foshan 528000
- China
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39
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Liu YL, Pan YL, Li GJ, Xu HF, Chen JZ. The nickel-catalyzed C3-acylation of 2H-indazoles with aldehydes. Org Biomol Chem 2019; 17:8749-8755. [DOI: 10.1039/c9ob01749f] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A direct acylation at C3 position of 2H-indazoles has been achieved to produce 3-acyl-2H-indazoles using aldehydes.
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Affiliation(s)
- Yan-Ling Liu
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - You-Lu Pan
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - Gang-Jian Li
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - Hai-Feng Xu
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
| | - Jian-Zhong Chen
- College of Pharmaceutical Sciences
- Zhejiang University
- Hangzhou
- China
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40
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Ghosh B, Samanta R. Rh(iii)-Catalyzed straightforward arylation of 8-methyl/formylquinolines using diazo compounds. Chem Commun (Camb) 2019; 55:6886-6889. [DOI: 10.1039/c9cc02391g] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A straightforward Rh(iii)-catalyzed general strategy was developed for the introduction of naphthol/phenol moieties to 8-methyl and formylquinolines using diazonaphthalen-2(1H)-ones/quinone diazides.
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Affiliation(s)
- Bidhan Ghosh
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Rajarshi Samanta
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
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41
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Dong Y, Chen J, Xu H. Rhodium(iii)-catalyzed sulfonamide directed ortho C–H carbenoid functionalization via metal carbene migratory insertion. Chem Commun (Camb) 2019; 55:2027-2030. [DOI: 10.1039/c8cc08837c] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A rhodium(iii)-catalyzed sulfonamide directed ortho C–H carbenoid functionalization has been developed with good yields.
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Affiliation(s)
- Yi Dong
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- China
| | - Jiajing Chen
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- China
| | - Heng Xu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines
- Institute of Materia Medica
- Chinese Academy of Medical Sciences and Peking Union Medical College
- Beijing 100050
- China
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42
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Panchangam RL, Manickam V, Chanda K. Assembly of Fully Substituted 2H-Indazoles Catalyzed by Cu 2 O Rhombic Dodecahedra and Evaluation of Anticancer Activity. ChemMedChem 2018; 14:262-272. [PMID: 30422389 DOI: 10.1002/cmdc.201800707] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Indexed: 11/06/2022]
Abstract
Simultaneous C-N, and N-N bond-forming methods for one-pot transformations are highly challenging in synthetic organic chemistry. In this study, the Cu2 O rhombic dodecahedra-catalyzed synthesis of 2H-indazoles is demonstrated with good to excellent yields from readily available chemicals. This one-pot procedure involves Cu2 O nanoparticle-catalyzed consecutive C-N, and N-N bond formation followed by cyclization to yield 2H-indazoles with broad substrate scope and high functional group tolerance. Various cell-based bioassay studies demonstrated that 2H-indazoles inhibit the growth of cancer cells, typically through induction of apoptosis in a dose-dependent manner. Moreover, 2H-indazoles tested in the MDA-MB-468 cell line were capable of inhibiting cancer cell migration and invasion. Thus, it is shown that 2H-indazoles have potent in vitro anticancer activity that warrant further investigation of this compound class.
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Affiliation(s)
- Rajeeva Lochana Panchangam
- Department of Biosciences, School of Bioscience and Technology, Vellore Institute of Technology, Vellore, 632014, India
| | - Venkatraman Manickam
- Department of Biosciences, School of Bioscience and Technology, Vellore Institute of Technology, Vellore, 632014, India
| | - Kaushik Chanda
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, India
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43
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2017. Coord Chem Rev 2018. [DOI: 10.1016/j.ccr.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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44
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Mishra NK, Park J, Oh H, Han SH, Kim IS. Recent advances in N-heterocycles synthesis through catalytic C−H functionalization of azobenzenes. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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45
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Zhang SG, Liang CG, Zhang WH. Recent Advances in Indazole-Containing Derivatives: Synthesis and Biological Perspectives. Molecules 2018; 23:E2783. [PMID: 30373212 PMCID: PMC6278422 DOI: 10.3390/molecules23112783] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Revised: 10/14/2018] [Accepted: 10/24/2018] [Indexed: 02/07/2023] Open
Abstract
Indazole-containing derivatives represent one of the most important heterocycles in drug molecules. Diversely substituted indazole derivatives bear a variety of functional groups and display versatile biological activities; hence, they have gained considerable attention in the field of medicinal chemistry. This review aims to summarize the recent advances in various methods for the synthesis of indazole derivatives. The current developments in the biological activities of indazole-based compounds are also presented.
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Affiliation(s)
- Shu-Guang Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Chao-Gen Liang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China.
| | - Wei-Hua Zhang
- Jiangsu Key Laboratory of Pesticide Science, College of Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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46
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Son JY, Kim H, Baek Y, Um K, Ko GH, Han GU, Han SH, Lee K, Lee PH. Tosyl Hydrazine-Promoted Tandem Condensation and Cyclization of Acyl Azobenzenes Enabling Access to 2H
-Indazoles under Metal-Free Aerobic Conditions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801055] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jeong-Yu Son
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Hyunseok Kim
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Yonghyeon Baek
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Kyusik Um
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Gi Hoon Ko
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Gi Uk Han
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Sang Hoon Han
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Kooyeon Lee
- Department of Bio-Health Technology; Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Phil Ho Lee
- Department of Chemistry; Kangwon National University; Chuncheon 24341 Republic of Korea
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47
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Janardhanan JC, Mishra RK, Das G, Sini S, Jayamurthy P, Suresh CH, Praveen VK, Manoj N, Babu BP. Functionalizable 1H
-Indazoles by Palladium Catalyzed Aza-Nenitzescu Reaction: Pharmacophores to Donor-Acceptor Type Multi-Luminescent Fluorophores. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800413] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jith C. Janardhanan
- Department of Applied Chemistry; Cochin University of Science and Technology (CUSAT); Cochin 682022 India
| | - Rakesh K. Mishra
- Chemical Science and Technology Division; CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Thiruvanathapuram 695019 India
- Department of Sciences and Humanities; National Institute of Technology, Uttarakhand (NITUK); Srinagar (Garhwal) 246174 India
| | - Gourab Das
- Chemical Science and Technology Division; CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Thiruvanathapuram 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR-NIIST Campus; Thiruvanathapuram 695019 India
| | - Suresh Sini
- Agroprocessing and Technology Division; CSIR-NIIST; Thiruvanathapuram 695019 India
| | - Purushothaman Jayamurthy
- Academy of Scientific and Innovative Research (AcSIR); CSIR-NIIST Campus; Thiruvanathapuram 695019 India
- Agroprocessing and Technology Division; CSIR-NIIST; Thiruvanathapuram 695019 India
| | - Cherumuttathu H. Suresh
- Chemical Science and Technology Division; CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Thiruvanathapuram 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR-NIIST Campus; Thiruvanathapuram 695019 India
| | - Vakayil K. Praveen
- Chemical Science and Technology Division; CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST); Thiruvanathapuram 695019 India
- Academy of Scientific and Innovative Research (AcSIR); CSIR-NIIST Campus; Thiruvanathapuram 695019 India
| | - Narayanapillai Manoj
- Department of Applied Chemistry; Cochin University of Science and Technology (CUSAT); Cochin 682022 India
| | - Beneesh P. Babu
- Department of Chemistry; National Institute of Technology, Karnataka (NITK); Surathkal 575025 India
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48
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Yu X, Ding W, Ge P, Wang S, Wang J. Oxidative Coupling of Aromatic Amines and Nitrosoarenes: Iodine-Mediated Formation of Unsymmetrical Aromatic Azoxy Compounds. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800495] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaochun Yu
- College of Chemistry and Materials Engineering; Wenzhou University, Wenzhou; Zhejiang 325035 People's Republic of China
| | - Weijie Ding
- College of Chemistry and Materials Engineering; Wenzhou University, Wenzhou; Zhejiang 325035 People's Republic of China
| | - Panyu Ge
- College of Chemistry and Materials Engineering; Wenzhou University, Wenzhou; Zhejiang 325035 People's Republic of China
| | - Shun Wang
- College of Chemistry and Materials Engineering; Wenzhou University, Wenzhou; Zhejiang 325035 People's Republic of China
| | - Jichang Wang
- Department of Chemistry and Biochemistry; University of Windsor; Windsor, ON N9B 3P4 Canada
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49
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Chen X, Zheng G, Song G, Li X. Rhodium(III)-Catalyzed Synthesis of Cinnolinium Salts from Azobenzenes and Diazo Compounds. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800326] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Xiaohong Chen
- Beijing Key Laboratory of Lignocellulosic Chemistry; Beijing Forestry University; Beijing 100083 People's Republic of China
| | - Guangfan Zheng
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 People's Republic of China
| | - Guoyong Song
- Beijing Key Laboratory of Lignocellulosic Chemistry; Beijing Forestry University; Beijing 100083 People's Republic of China
| | - Xingwei Li
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 People's Republic of China
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50
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Schoene J, Bel Abed H, Schmieder P, Christmann M, Nazaré M. A General One-Pot Synthesis of 2H-Indazoles Using an Organophosphorus-Silane System. Chemistry 2018; 24:9090-9100. [PMID: 29644761 DOI: 10.1002/chem.201800763] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Indexed: 11/11/2022]
Abstract
A simple and direct approach for the regioselective construction of the privileged 2H-indazole scaffold is described. The developed one-pot strategy involves phospholene-mediated N-N bond formation to access 2H-indazoles. The amount of organophosphorus reagent was minimized by recycling the phospholene oxide with organosilane reductants. Starting from functionalized 2-nitrobenzaldehydes and primary amines, a mild reductive cyclization, involving the use of commercially available phospholene oxide and silanes, delivered a wide variety of substituted 2H-indazoles in good to excellent yields.
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Affiliation(s)
- Jens Schoene
- Departments of Chemical Biology and Structural Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Campus Berlin-Buch, Robert-Roessle-Str. 10, 13125, Berlin, Germany
| | - Hassen Bel Abed
- Departments of Chemical Biology and Structural Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Campus Berlin-Buch, Robert-Roessle-Str. 10, 13125, Berlin, Germany
| | - Peter Schmieder
- Departments of Chemical Biology and Structural Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Campus Berlin-Buch, Robert-Roessle-Str. 10, 13125, Berlin, Germany
| | - Mathias Christmann
- Institut für Chemie und Biochemie, Organische Chemie, Freie Universität Berlin, Takustrasse. 3, 14195, Berlin, Germany
| | - Marc Nazaré
- Departments of Chemical Biology and Structural Biology, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Campus Berlin-Buch, Robert-Roessle-Str. 10, 13125, Berlin, Germany.,Berlin Institute of Health (BIH), Anna-Louisa-Karsch-Str. 2, 10178 Kapelle-Ufer 2, 10117, Berlin, Germany
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