1
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Lv J, Liang Y, Ouyang Y, Zhang H. Metal-Free ortho C-H Borylation of Thiobenzamides. Org Lett 2024; 26:3709-3714. [PMID: 38691629 DOI: 10.1021/acs.orglett.4c00691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
A BBr3-mediated S-directed ortho C-H borylation of thiobenzamides was developed. A variety of ortho-borylated thiobenzamides were obtained in moderate to good yields with a wide functional group tolerance under simple and metal-free conditions. This transformation provided a convenient and practical route to important functionalized thiobenzamides.
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Affiliation(s)
- Jianxing Lv
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education and Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Yixuan Liang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education and Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Yepeng Ouyang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education and Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
| | - Hua Zhang
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education and Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, P. R. China
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2
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Wen M, Zhang M, Gu F, Geng Y, Liu X, Wu Q, Yang X. Synthesis of spiropyrans via Ru(II)-catalyzed coupling of 3-aryl-2 H-benzo[ b][1,4]oxazines with benzoquinones. Org Biomol Chem 2024; 22:998-1009. [PMID: 38186088 DOI: 10.1039/d3ob01971c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
An efficient Ru(II)-catalyzed C-H activation-based spiroannulation of benzoxazines with the easily available benzoquinone and N-sulfonyl quinone monoimine has been realized, providing a straightforward strategy to access NH-containing spiropyrans in moderate to good yields with good functional group compatibility. The procedure features atom- and step-economy, mild conditions, and excellent chemoselectivity. Moreover, a catalytically competent five-membered cycloruthenated complex has been isolated.
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Affiliation(s)
- Mengke Wen
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
- College of Sciences, Northeastern University, Shenyang, 110819, China
| | - Mengying Zhang
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Fan Gu
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Yuehua Geng
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Xiangyang Liu
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Qingnan Wu
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
| | - Xifa Yang
- Institute of Pesticide, College of Plant Protection, Henan Agricultural University, Zhengzhou, 450002, China.
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3
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Singh P, Min J, Min S, Moon K, Kim HS, Kim IS. Sulfur-Directed α-C(sp 3)-H Amidation of Pyrrolidines with Dioxazolones under Rhodium Catalysis. Org Lett 2024; 26:57-61. [PMID: 38134331 DOI: 10.1021/acs.orglett.3c03633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023]
Abstract
Site-selective functionalization of saturated N-heterocycles such as pyrrolidines is a central topic in organic synthesis and drug discovery. We herein report the sulfur-assisted rhodium(III)-catalyzed sp3 C-H amidation of pyrrolidines with dioxazolones as amidating agents. The amenability of the thioamide directing group is elucidated by a series of control experiments.
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Affiliation(s)
- Pargat Singh
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jeonghyun Min
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sujin Min
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kyeongwon Moon
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Hyung Sik Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - In Su Kim
- School of Pharmacy, Sungkyunkwan University, Suwon 16419, Republic of Korea
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4
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Xiong W, Zhou S, Zhang X, Zhao J, Huang J, Hu W, Xu X. Gold-Catalyzed Alkyne Multifunctionalization through an Oxidation-Oxyalkylation-Aryloxylation Sequence. Org Lett 2023; 25:405-409. [PMID: 36607257 DOI: 10.1021/acs.orglett.2c04115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A gold-catalyzed oxidative three-component reaction of terminal alkynes with alcohols and quinone monoimines has been disclosed, affording α-ketoacetals in good to excellent yields. By using quinone monoimines as electrophiles for the interception of the in situ generated gold enolate intermediate, this one-pot process provides an unprecedented method for the polyfunctionalization of terminal alkynes through an oxidation-oxyalkylation-aryloxylation sequence, installing three oxygen atoms on the C-C triple bond.
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Affiliation(s)
- Weichen Xiong
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Su Zhou
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Xinke Zhang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Jingyu Zhao
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Jingjing Huang
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Wenhao Hu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
| | - Xinfang Xu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, Guangdong 510006, China
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5
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Qin J, Zhou T, Zhou TP, Tang L, Zuo H, Yu H, Wu G, Wu Y, Liao RZ, Zhong F. Catalytic Atroposelective Electrophilic Amination of Indoles. Angew Chem Int Ed Engl 2022; 61:e202205159. [PMID: 35612900 DOI: 10.1002/anie.202205159] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Indexed: 01/13/2023]
Abstract
Reported here is the first catalytic atroposelective electrophilic amination of indoles, which delivers functionalized atropochiral N-sulfonyl-3-arylaminoindoles with excellent optical purity. This reaction was furnished by 1,6-nucleophilic addition to p-quinone diimines. Control experiments suggest an ionic mechanism that differs from the radical addition pathway commonly proposed for 1,6-addition to quinones. The origin of 1,6-addition selectivity was investigated through computational studies. Preliminary studies show that the obtained 3-aminoindoles atropisomers exhibit anticancer activities. This method is valuable with respect to enlarging the toolbox for atropochiral amine derivatives.
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Affiliation(s)
- Jingyang Qin
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Tong Zhou
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Tai-Ping Zhou
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Langyu Tang
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Honghua Zuo
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Huaibin Yu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Guojiao Wu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Yuzhou Wu
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Rong-Zhen Liao
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
| | - Fangrui Zhong
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Hubei Key Laboratory of Bioinorganic Chemistry & Materia Medica, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Luoyu Road 1037, Wuhan, 430074, China
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6
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Shennan BDA, Berheci D, Crompton JL, Davidson TA, Field JL, Williams BA, Dixon DJ. Branching out: redox strategies towards the synthesis of acyclic α-tertiary ethers. Chem Soc Rev 2022; 51:5878-5929. [PMID: 35770619 DOI: 10.1039/d1cs00669j] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Acyclic α-tertiary ethers represent a highly prevalent functionality, common to high-value bioactive molecules, such as pharmaceuticals and natural products, and feature as crucial synthetic handles in their construction. As such their synthesis has become an ever-more important goal in synthetic chemistry as the drawbacks of traditional strong base- and acid-mediated etherifications have become more limiting. In recent years, the generation of highly reactive intermediates via redox approaches has facilitated the synthesis of highly sterically-encumbered ethers and accordingly these strategies have been widely applied in α-tertiary ether synthesis. This review summarises and appraises the state-of-the-art in the application of redox strategies enabling acyclic α-tertiary ether synthesis.
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Affiliation(s)
- Benjamin D A Shennan
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Diana Berheci
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Jessica L Crompton
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Timothy A Davidson
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Joshua L Field
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Benedict A Williams
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
| | - Darren J Dixon
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
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7
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Qin J, Zhou T, Zhou T, Tang L, Zuo H, Yu H, Wu G, Wu Y, Liao RZ, Zhong F. Catalytic Atroposelective Electrophilic Amination of Indoles. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202205159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jingyang Qin
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Tong Zhou
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Taiping Zhou
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Langyu Tang
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Honghua Zuo
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Huaibin Yu
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Guojiao Wu
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Yuzhou Wu
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Rong-Zhen Liao
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering CHINA
| | - Fangrui Zhong
- Huazhong University of Science and Technology School of Chemistry and Chemical Engineering Luoyu road 1037 430074 Wuhan CHINA
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8
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Tian S, Wang C, Xia J, Wan J, Liu Y. Transition Metal‐Free, Free‐Radical Sulfenylation of the α‐C(
sp
3
)−H Bond in Arylacetamides and Its Application Toward 2‐Thiomethyl Benzoxazoles Synthesis. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100816] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Shanghui Tian
- College of Chemistry and Chemical Engineering Jiangxi Normal University 330022 Nanchang People's Republic of China
| | - Chaoli Wang
- College of Chemistry and Chemical Engineering Jiangxi Normal University 330022 Nanchang People's Republic of China
| | - Jianhui Xia
- College of Chemistry and Chemical Engineering Jiangxi Normal University 330022 Nanchang People's Republic of China
| | - Jie‐Ping Wan
- College of Chemistry and Chemical Engineering Jiangxi Normal University 330022 Nanchang People's Republic of China
| | - Yunyun Liu
- College of Chemistry and Chemical Engineering Jiangxi Normal University 330022 Nanchang People's Republic of China
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9
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Wood JM, de Carvalho RL, da Silva Júnior EN. The Different Facets of Metal-Catalyzed C-H Functionalization Involving Quinone Compounds. CHEM REC 2021; 21:2604-2637. [PMID: 33415843 DOI: 10.1002/tcr.202000163] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/17/2020] [Indexed: 12/15/2022]
Abstract
Metal-catalysed C-H functionalization has emerged as a powerful platform for the derivatization of quinones, a class of compounds with wide-ranging applications. This review organises and discusses the evolution of this chemistry from early Fujiwara-Moritani reactions, through to modern directing-group assisted C-H functionalization processes, including C-H functionalization reactions directed by the quinone ring itself. Mechanistic details of these reactions are provided to afford insight into how the unique reactivity of quinoidal compounds has been leveraged in each example.
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Affiliation(s)
- James M Wood
- The Ferrier Research Institute, Victoria University of Wellington, Lower Hutt, 5010, New Zealand
| | - Renato L de Carvalho
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, 31270-901, Brazil
| | - Eufrânio N da Silva Júnior
- Institute of Exact Sciences, Department of Chemistry, Federal University of Minas Gerais, Belo Horizonte, 31270-901, Brazil
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10
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Xie H, Zhong M, Wang XT, Wu JQ, Cai YQ, Liu J, Shu B, Che T, Zhang SS. Cp*Ir(iii)- and Cp*Rh(iii)-catalyzed C(sp2)–H amination of arenes using thioethers as directing groups. Org Chem Front 2021. [DOI: 10.1039/d0qo01353f] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A mild and selective Cp*Ir(iii)- and Cp*Rh(iii)-catalyzed direct C(sp2)–H amination of arenes and three types of nitrene precursor reagents is reported, with the assistance of a thioether directing group.
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Affiliation(s)
- Hui Xie
- Center for Drug Research and Development
- Guangdong Pharmaceutical University
- Guangzhou
- China
| | - Mei Zhong
- School of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou
- PR China
| | - Xiao-Tong Wang
- School of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou
- PR China
| | - Jia-Qiang Wu
- School of Biotechnology and Health Sciences
- Wuyi University
- Jiangmen 529020
- China
| | - Yan-Qu Cai
- Center for Drug Research and Development
- Guangdong Pharmaceutical University
- Guangzhou
- China
| | - Jidan Liu
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou 510006
- People's Republic of China
| | - Bing Shu
- School of Pharmacy
- Guangdong Pharmaceutical University
- Guangzhou
- PR China
| | - Tong Che
- Center for Drug Research and Development
- Guangdong Pharmaceutical University
- Guangzhou
- China
- Jiangxi Chinese Medicine Science Center of DICP
| | - Shang-Shi Zhang
- Center for Drug Research and Development
- Guangdong Pharmaceutical University
- Guangzhou
- China
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11
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Kumar J, Suresh E, Bhadra S. Catalytic Direct α-Amination of Arylacetic Acid Synthons with Anilines. J Org Chem 2020; 85:13363-13374. [PMID: 32998508 DOI: 10.1021/acs.joc.0c02122] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A unique α-amination approach using various anilines has been developed for arylacetic acids via adaptation as benzazoles. The reaction proceeds through a single electron transfer mechanism utilizing an iron-based catalyst system to access α-(N-arylamino)acetic acid equivalents. Modification of approved drugs, facile cleavage of the benzazole auxiliary, and tolerance of amide linkage forming conditions constitute the potential applicability of this strategy.
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Affiliation(s)
- Jogendra Kumar
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Eringathodi Suresh
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Sukalyan Bhadra
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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12
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Yan K, Liu M, Wen J, Wang S, Li J, Wang H. Synthesis of Substituted Naphtho[1,8-bc]thiopyrans by Sulfhydryl-Directed Rhodium-Catalyzed peri-Selective C–H Bond Activation and Cyclization of Naphthalene-1-thiols. Org Lett 2020; 22:7825-7830. [DOI: 10.1021/acs.orglett.0c02703] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Kelu Yan
- Institute of Medicine and Materials Applied Technologies, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Min Liu
- Institute of Medicine and Materials Applied Technologies, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Jiangwei Wen
- Institute of Medicine and Materials Applied Technologies, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Shao Wang
- Institute of Medicine and Materials Applied Technologies, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Jing Li
- Institute of Medicine and Materials Applied Technologies, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Hua Wang
- Institute of Medicine and Materials Applied Technologies, College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
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13
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Jhou J, Cheng C, Hong F. Tertiary amines as vinyl source for the formations of aryl or pyrrole ring on
amido‐substitued
1,
4‐quinone
with the assistance of palladium salt. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Jia‐Nan Jhou
- Department of Chemistry National Chung Hsing University Taichung Taiwan
| | - Chiu‐Wen Cheng
- Department of Chemistry National Chung Hsing University Taichung Taiwan
| | - Fung‐E Hong
- Department of Chemistry National Chung Hsing University Taichung Taiwan
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14
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Fujitani B, Hanaya K, Sugai T, Higashibayashi S. Stepwise approach for sterically hindered C sp3-C sp3 bond formation by dehydrogenative O-alkylation and Lewis acid-catalyzed [1,3]-rearrangement towards the arylalkylcyclopentane skeleton of sesquiterpenes. Chem Commun (Camb) 2020; 56:3621-3624. [PMID: 32104846 DOI: 10.1039/d0cc01017k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A stepwise dehydrogenative cross-coupling method was developed for the formation of sterically hindered Csp3-Csp3 bonds. Intramolecular dehydrogenative O-alkylation of a β-ketoester by 2,3-dichloro-5,6-dicyano-p-benzoquinone to form an oxolane followed by Lewis acid-catalyzed [1,3]-rearrangement furnished the sesquiterpene arylmethylcyclopentane skeleton. The formal syntheses of herbertane-type β-herbertenol, cuparane-type enokipodins A and B were also achieved.
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Affiliation(s)
- Ban Fujitani
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
| | - Kengo Hanaya
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
| | - Takeshi Sugai
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
| | - Shuhei Higashibayashi
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo 105-8512, Japan.
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15
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Yan K, Kong Y, Li B, Wang B. Sulfhydryl-Directed Iridium-Catalyzed C-H/Diazo Coupling and Tandem Annulation of Naphthalene-1-thiols. Org Lett 2019; 21:7000-7003. [PMID: 31436429 DOI: 10.1021/acs.orglett.9b02581] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
The first sulfhydryl-directed iridium-catalyzed C-H/diazo coupling and tandem annulation of naphthalene-1-thiols has been developed. The framework of naphtho[1,8-bc]thiopyrans was constructed in a one-step reaction with good yields. This transformation provides a practical synthetic route for the widely used naphtho[1,8-bc]thiopyran derivatives.
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Affiliation(s)
- Kelu Yan
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Yong Kong
- SINOPEC Research Institute of Petroleum Engineering, Beijing 100101, People's Republic of China
| | - Bin Li
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Baiquan Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
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16
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Gupta A, Rahaman A, Bhadra S. Direct α-Chalcogenation of Aliphatic Carboxylic Acid Equivalents. Org Lett 2019; 21:6164-6168. [DOI: 10.1021/acs.orglett.9b02424] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Aniket Gupta
- Inorganic Materials and Catalysis Division, Academy of Scientific and Innovative Research, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, Gujarat, India
| | - Ajijur Rahaman
- Inorganic Materials and Catalysis Division, Academy of Scientific and Innovative Research, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, Gujarat, India
| | - Sukalyan Bhadra
- Inorganic Materials and Catalysis Division, Academy of Scientific and Innovative Research, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, Gujarat, India
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17
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Walker JCL, Oestreich M. Regioselective Transfer Hydrodeuteration of Alkenes with a Hydrogen Deuteride Surrogate Using B(C6F5)3 Catalysis. Org Lett 2018; 20:6411-6414. [DOI: 10.1021/acs.orglett.8b02718] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Johannes C. L. Walker
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
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18
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Tang K, Wang C, Gao T, Chen L, Fan L, Sun L. Transition Metal‐Catalyzed C−H Bond Functionalizations by Use of Sulfur‐Containing Directing Groups. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800484] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Kai‐Xiang Tang
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal ChemistryChina Pharmaceutical University #24 Tongjiaxiang Nanjing 210009 People's Republic of China
| | - Chun‐Meng Wang
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal ChemistryChina Pharmaceutical University #24 Tongjiaxiang Nanjing 210009 People's Republic of China
| | - Tian‐Hong Gao
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal ChemistryChina Pharmaceutical University #24 Tongjiaxiang Nanjing 210009 People's Republic of China
| | - Lin Chen
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal ChemistryChina Pharmaceutical University #24 Tongjiaxiang Nanjing 210009 People's Republic of China
| | - Lian Fan
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal ChemistryChina Pharmaceutical University #24 Tongjiaxiang Nanjing 210009 People's Republic of China
| | - Li‐Ping Sun
- Jiangsu Key Laboratory of Drug Design & Optimization, Department of Medicinal ChemistryChina Pharmaceutical University #24 Tongjiaxiang Nanjing 210009 People's Republic of China
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19
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Parella R, Babu SA. Pd(II)-Catalyzed Arylation and Intramolecular Amidation of γ-C(sp3)–H Bonds: En Route to Arylheteroarylmethane and Pyrrolidone Ring Annulated Furan/Thiophene Scaffolds. J Org Chem 2017; 82:7123-7150. [DOI: 10.1021/acs.joc.7b00582] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ramarao Parella
- Department Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge
City, Sector 81, SAS Nagar, Manauli P.O., Mohali, Punjab 140306, India
| | - Srinivasarao Arulananda Babu
- Department Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge
City, Sector 81, SAS Nagar, Manauli P.O., Mohali, Punjab 140306, India
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20
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Esguerra KVN, Lumb JP. Synthesis of ortho
-Azophenols by Formal Dehydrogenative Coupling of Phenols and Hydrazines or Hydrazides. Chemistry 2017; 23:8596-8600. [DOI: 10.1002/chem.201701226] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Indexed: 01/13/2023]
Affiliation(s)
| | - Jean-Philip Lumb
- Department of Chemistry; McGill University; 801 Sherbrooke St. W. Montreal Quebec H3A 0B8 Canada
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21
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Tang KX, Wang CM, Gao TH, Pan C, Sun LP. Pd-catalyzed C–H arylation of benzothioamides with boronic acids using thioamides as directing groups. Org Chem Front 2017. [DOI: 10.1039/c7qo00532f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The Pd(ii)-catalyzed arylation of benzothioamides with boronic acids using thioamides as directing groups has been achieved for the first time.
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Affiliation(s)
- Kai-Xiang Tang
- Jiangsu Key Laboratory of Drug Design & Optimization
- Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
| | - Chun-Meng Wang
- Jiangsu Key Laboratory of Drug Design & Optimization
- Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
| | - Tian-Hong Gao
- Jiangsu Key Laboratory of Drug Design & Optimization
- Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
| | - Cong Pan
- Jiangsu Key Laboratory of Drug Design & Optimization
- Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
| | - Li-Ping Sun
- Jiangsu Key Laboratory of Drug Design & Optimization
- Department of Medicinal Chemistry
- China Pharmaceutical University
- Nanjing 210009
- P. R. China
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