1
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Ma C, Fu C, Cen Z, Huang K, Lu X, Wu X. B/Pd Synergistic Catalysis for the Decarboxylative Allylation of 2-(2-Azaaryl)acetic Acids. J Org Chem 2024; 89:14558-14563. [PMID: 39269172 DOI: 10.1021/acs.joc.4c01634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/15/2024]
Abstract
We describe an allylation reaction between 2-(2-azaaryl)acetic acids and allylic electrophiles catalyzed synergistically by a dual system consisting of borinic acid and a Pd complex under mild conditions. The decarboxylative allylation proceeds via a boron-bound enamine intermediate, which then interacts with a π-allylpalladium intermediate from the allylic electrophile. High yields of diallylation products highlight the method's efficiency. Intriguingly, when using 2-(2-pyridyl)acetic acid with a C3 substituent on the pyridyl ring, the reaction exclusively yields monoallylation products.
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Affiliation(s)
- Chicheng Ma
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, China
| | - Chao Fu
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, China
| | - Zhihe Cen
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, China
| | - Kai Huang
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, China
| | - Xuehe Lu
- Frontiers Science Center for Transformative Molecules, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, 429 Zhangheng Lu, Shanghai 200444, China
| | - Xiaoyu Wu
- Center for Supramolecular Chemistry and Catalysis and Department of Chemistry, College of Sciences, Shanghai University, 99 Shangda Lu, Shanghai 200444, China
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2
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Bera A, Azad SA, Patra P, Sepay N, Jana R, Das T, Saha A, Samanta S. Synthesis of Multifused Pyrrolo[1,2- a]quinoline Systems by Tandem Aza-Michael-Aldol Reactions and Their Application to Molecular Sensing Studies. J Org Chem 2023; 88:5622-5638. [PMID: 36996425 DOI: 10.1021/acs.joc.3c00109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
Abstract
Herein, we have presented a weak acid-promoted tandem aza-Michael-aldol strategy for the synthesis of diversely fused pyrrolo[1,2-a]quinoline (tricyclic to pentacyclic scaffolds) by the construction of both pyrrole and quinoline ring in one pot. The described protocol fabricated two C-N bonds and one C-C bond in the pyrrole-quinoline rings which have been sequentially formed under transition-metal-free conditions by the extrusion of eco-friendly water molecules. A ketorolac drug analogue has been synthesized following the current protocol, and one of the synthesized tricyclic pyrrolo[1,2-a]quinoline fluorophores has been used to detect highly toxic picric acid via the fluorescence quenching effect.
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Affiliation(s)
- Anirban Bera
- Department of Chemistry, Bidhannagar College, Kolkata 700064, India
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
| | | | - Prasanta Patra
- Jhargram Raj College, Jhargram, West Bengal 721507, India
| | - Nayim Sepay
- Department of Chemistry, Lady Brabourne College, Kolkata 700 017, India
| | - Rathin Jana
- Department of Chemistry, Shahid Matangini Hazra Govt. General Degree College for Women, Kulberia, West Bengal 721649, India
| | - Tapas Das
- Department of Chemistry, National Institute of Technology, Jamshedpur 831014, India
| | - Amit Saha
- Department of Chemistry, Jadavpur University, Kolkata 700032, India
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3
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Hu Y, Jia Y, Tuo Z, Zhou W. Rhodium(III)-Catalyzed Intramolecular Annulation and Aromatization for the Synthesis of Pyrrolo[1,2- a]quinolines. Org Lett 2023; 25:1845-1849. [PMID: 36897039 DOI: 10.1021/acs.orglett.3c00321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
A rhodium(III)-catalyzed protocol for the synthesis of pyrrolo[1,2-a]quinolines through intramolecular annulation of o-alkynyl amino aromatic ketones and subsequent aromatization is reported. This transformation builds the pyrrole and quinoline moieties of the pyrrolo[1,2-a]quinoline in one pot and achieves a flexible introduction of different substituent groups at 4- and 5-positions on products that were difficult to prepare by other means. The reaction proceeds smoothly on a gram scale, and the products are amenable to downstream synthetic manipulations.
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Affiliation(s)
- Yongchun Hu
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Education of China, and Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Yuanyuan Jia
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
| | - Zekun Tuo
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Education of China, and Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
| | - Wang Zhou
- Key Laboratory of Chemical Biology and Traditional Chinese Medicine, Ministry of Education of China, and Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province, Hunan Normal University, Changsha 410081, China
- College of Chemical Engineering, Xiangtan University, Xiangtan 411105, China
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4
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A Catalyst‐ and Solvent‐ Free Synthesis of Tetra‐Substituted Pyrroles by Multicomponent Reaction. ChemistrySelect 2023. [DOI: 10.1002/slct.202204564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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5
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Chen S, You B, Zhang T, Li M, Gu Y. Diversity-Oriented Metal-Free Synthesis of Nitrogen-Containing Heterocycles Using Atropaldehyde Acetals as a Dual C3/C2-Synthon. CHEMSUSCHEM 2022; 15:e202201301. [PMID: 35909080 DOI: 10.1002/cssc.202201301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 07/26/2022] [Indexed: 06/15/2023]
Abstract
A highly efficient and elegant diversity-oriented reaction paradigm employing atropaldehyde acetals as new dual C2/C3 synthons was developed under metal-free conditions using glycine esters as the counterpart reagents, which allowed rapid synthesis of two important nitrogen-containing heterocycles, pyrrolo[1,2-a]quinolines and 3,5-diarylpyridines. The divergent products are subtly controlled by the manipulation of the substitutional groups of glycine esters. When a N-arylglycine ester was used, pyrrolo[1,2-a]quinolines can be formed through cascade oxidative C-C cleavage/multiple cyclization. Instead, N-benzylglycine ester as the counter-reagent led to the synthesis of 3,5-diarylpyridines via two key C-N cleavages. Mild conditions, broad substrate scope, scalability and environmentally acceptable organic solvents rendered this method practical and attractive.
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Affiliation(s)
- Shaomin Chen
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Bo You
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Tianjian Zhang
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Minghao Li
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Yanlong Gu
- Key Laboratory for Large-Format Battery Materials and System Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, 832004, P. R. China
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Lanzhou, 730000, P. R. China
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6
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Xiao F, Yang G, Yao L, Mao G, Deng G. Fe‐Catalyzed Three‐Component Reaction for the Synthesis of 2,3'‐Biquinolines. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200820] [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]
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7
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Zhang H, Di SS, Huang XB, Zhou YB, Liu MC, Wu HY. Direct dilithiation of N-aryl heterocycles for the construction of condensed N-heterocycles. Org Chem Front 2022. [DOI: 10.1039/d1qo01896e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 1,4-dilithio intermediate generated from N-aryl heterocycles reacts well with acyl chlorides to afford condensed N-heterocycles in good yields.
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Affiliation(s)
- Hong Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
| | - Shu-Sheng Di
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
| | - Xiao-Bo Huang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
| | - Yun-Bing Zhou
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
| | - Miao-Chang Liu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
| | - Hua-Yue Wu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, 325035, P. R. China
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8
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Miftyakhova AR, Borisova TN, Titov AA, Sidakov MB, Novikov RA, Efimov IV, Varlamov AV, Voskressensky LG. A Three-Component Synthesis of 3-Functionally Substituted 5,6-Dihydropyrrolo[2,1-a]isoquinolines. Chem Biodivers 2021; 19:e202100584. [PMID: 34752012 DOI: 10.1002/cbdv.202100584] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 11/08/2021] [Indexed: 12/25/2022]
Abstract
Synthesis of novel C3-substituted 5,6-dihydropyrrolo[2,1-a]isoquinolines via a three-component domino reaction of 1-aroyl-3,4-dihydroisoquinolines, terminal alkynes and CH-acids under microwave irradiation in dry acetonitrile is described. The method developed enables the obtainment of highly functionalized compounds with pharmacophore groups, which are potentially biologically active.
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Affiliation(s)
- Almira R Miftyakhova
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Tatiana N Borisova
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Alexander A Titov
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Matvey B Sidakov
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Roman A Novikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prosp., Moscow, 119991, Russian Federation
| | - Ilya V Efimov
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Alexey V Varlamov
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
| | - Leonid G Voskressensky
- Organic Chemistry Department, Peoples' Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya St, Moscow, 117198, Russian Federation
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9
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Zhou X, Zhang N, Li Y, Mo Z, Ma X, Chen Y, Xu Y. Metal-free synthesis of 3-sulfonyl-5-selanyl-4a,8a-dihydro-2H-chromen-6(5H)-ones via visible light driven intermolecular cascade cyclization of alkyne-tethered cyclohexadienones and selenosulfonates. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.07.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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10
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Yang WW, Ye YF, Chen LL, Fu JY, Zhu JY, Wang YB. Catalyst- and Additive-Free Annulation of Ynediones and (Iso)Quinoline N-Oxides: An Approach to Synthesis of Pyrrolo[2,1- a]Isoquinolines and Pyrrolo[1,2- a]Quinolines. J Org Chem 2020; 86:169-177. [PMID: 33252226 DOI: 10.1021/acs.joc.0c01932] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A simple and effective annulation of ynediones and (iso)quinoline N-oxides was developed to afford various functionalized pyrrolo[2,1-a]isoquinolines and pyrrolo[1,2-a]quinolines in moderate to excellent yields. This protocol underwent a tandem [3 + 2] cycloaddition/ring-opening/N-nucleophilic addition, which exhibited high regioselectivity, broad substrate tolerance, and atom economy under catalyst-, additive-free, and air conditions. Moreover, indolizine was also successfully prepared using pyridine N-oxide.
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Affiliation(s)
- Wan-Wan Yang
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 75004, China
| | - Ya-Fang Ye
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 75004, China
| | - Lu-Lu Chen
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 75004, China
| | - Ji-Ya Fu
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 75004, China
| | - Jun-Yan Zhu
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 75004, China
| | - Yan-Bo Wang
- Institute of Functional Organic Molecular Engineering, Henan Engineering Laboratory of Flame-Retardant and Functional Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng 75004, China
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11
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Latha DS, Yaragorla S. C(sp3
)-H Functionalization of 2-Methyl Azaarenes: Highly Facile Approach to Aza-Heterocyclic Compounds. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901899] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Dandugula Sneha Latha
- School of Chemistry; University of Hyderabad; P.O. Central University, Gachibowli; 500046 Hyderabad India
| | - Srinivasarao Yaragorla
- School of Chemistry; University of Hyderabad; P.O. Central University, Gachibowli; 500046 Hyderabad India
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12
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Dada R, Sulthan M, Yaragorla S. Calcium-Catalyzed Stereoselective Tandem [4+2] and [3+2] Annulation Reaction for the Synthesis of Dihydropyrrolo[1,2- a]quinolines. Org Lett 2019; 22:279-283. [PMID: 31854991 DOI: 10.1021/acs.orglett.9b04293] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Calcium-catalyzed highly facile one-pot, A4 annulation of aldehyde, amine, alkene, and alkyne to form fused 4,5-dihydropyrrolo[1,2-a]quinolines with exclusive syn diastereoselectivity is reported. This selectivity arises from an inverse electron demand [4+2] aza-Diels-Alder cycloaddition, and the adduct further undergoes a formal [3+2] cyclization with activated alkynes. This diversity-oriented protocol is highly general and furnishes the dihydropyrrolo[1,2-a]quinoline derivatives with a broad substrate scope in good to excellent yields.
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Affiliation(s)
- Ravikrishna Dada
- School of Chemistry , University of Hyderabad , P.O. Central University, Gachibowli, Hyderabad 500046 , India
| | - Mahesh Sulthan
- School of Chemistry , University of Hyderabad , P.O. Central University, Gachibowli, Hyderabad 500046 , India
| | - Srinivasarao Yaragorla
- School of Chemistry , University of Hyderabad , P.O. Central University, Gachibowli, Hyderabad 500046 , India
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13
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Xiao J, Xu G, Wang L, Li P, Zhang W, Ma N, Tao M. Polyacrylonitrile fiber with strongly acidic electrostatic microenvironment: Highly efficient and recyclable heterogeneous catalyst for the synthesis of heterocyclic compounds. J IND ENG CHEM 2019. [DOI: 10.1016/j.jiec.2019.04.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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14
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Kulandai Raj AS, Tan KC, Chen LY, Cheng MJ, Liu RS. Gold-catalyzed bicyclic annulations of 4-methoxy-1,2-dienyl-5-ynes with isoxazoles to form indolizine derivatives via an Au-π-allene intermediate. Chem Sci 2019; 10:6437-6442. [PMID: 31341595 PMCID: PMC6610539 DOI: 10.1039/c9sc00735k] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 05/10/2019] [Indexed: 12/23/2022] Open
Abstract
Gold-catalyzed bicyclic annulations of 4-methoxy-1,2-dienyl-5-ynes with isoxazoles afford indolizine derivatives with a structural rearrangement. The mechanism of these new annulations does not involve α-imino gold carbenes generated from gold π-alkyne intermediates. We postulate alkyne attack on gold π-allenes, yielding vinyl gold carbenes. These newly generated carbenes react with isoxazole derivatives to yield Z-3-imino-2-en-1-als, further enabling sequential cyclizations to deliver indolizine derivatives in two distinct classes.
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Affiliation(s)
- Antony Sekar Kulandai Raj
- Frontier Research Centers on Fundamental and Applied Science of Matters , Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China .
| | - Kuo-Chen Tan
- Frontier Research Centers on Fundamental and Applied Science of Matters , Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China .
| | - Liang-Yu Chen
- Department of Chemistry , National Cheng Kung University , Tainan 701 , Taiwan .
| | - Mu-Jeng Cheng
- Department of Chemistry , National Cheng Kung University , Tainan 701 , Taiwan .
| | - Rai-Shung Liu
- Frontier Research Centers on Fundamental and Applied Science of Matters , Department of Chemistry , National Tsing-Hua University , Hsinchu , Taiwan , Republic of China .
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15
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Ramesh V, Devi NS, Velusamy M, Shanmugam S. Catalyst free Synthesis of Highly Functionalized Indolizines from
In Situ
Generated Pyridinium Ylides
via
One‐Pot Multicomponent Reaction. ChemistrySelect 2019. [DOI: 10.1002/slct.201900665] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Vediyappan Ramesh
- Department of Organic ChemistrySchool of ChemistryMadurai Kamaraj University Madurai - 625 021 India
| | | | - Marappan Velusamy
- Department of ChemistryNorth Eastern Hill University Shillong – 793022 India
| | - Sivakumar Shanmugam
- Department of Organic ChemistrySchool of ChemistryMadurai Kamaraj University Madurai - 625 021 India
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16
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Chang MY, Wu YS. HOAc-Mediated Cyclocondensation of 2-Formylazaarenes and Cyclic Amines. Synthesis of Pyrrolo[1,2-a]azaarenes. J Org Chem 2019; 84:3638-3646. [DOI: 10.1021/acs.joc.8b03148] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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
| | - Yan-Shin Wu
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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17
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Hsieh HC, Tan KC, Kulandai Raj AS, Liu RS. Gold-catalyzed [4+1]-annulation reactions between anthranils and 4-methoxy-1,2-dienyl-5-ynes involving a 1,2-allene shift. Chem Commun (Camb) 2019; 55:1979-1982. [DOI: 10.1039/c8cc09082c] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Gold catalyzed [4+1]-annulations of 4-methoxy-1,2-dien-5-ynes with anthranils are described; the reaction mechanism involves initial formation of α-imino gold carbenes, followed by a subsequent 1,2-allene shift.
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Affiliation(s)
- Hsiang-Chu Hsieh
- Frontier Research Centers on Fundamental and Applied Science of Matters
- Department of Chemistry
- National Tsing-Hua University
- Hsinchu
- Republic of China
| | - Kuo-Chen Tan
- Frontier Research Centers on Fundamental and Applied Science of Matters
- Department of Chemistry
- National Tsing-Hua University
- Hsinchu
- Republic of China
| | - Antony Sekar Kulandai Raj
- Frontier Research Centers on Fundamental and Applied Science of Matters
- Department of Chemistry
- National Tsing-Hua University
- Hsinchu
- Republic of China
| | - Rai-Shung Liu
- Frontier Research Centers on Fundamental and Applied Science of Matters
- Department of Chemistry
- National Tsing-Hua University
- Hsinchu
- Republic of China
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18
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Gui HZ, Wei Y, Shi M. A Catalyst-Free Self-Catalyzed [3+2] Cycloaddition Reaction of 3-Isothiocyanato Oxindoles and Vinylpyridines. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801091] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Hou-Ze Gui
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; Meilong Road No.130 200237 Shanghai China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; University of Chinese Academy of Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road 200032 Shanghai China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; Meilong Road No.130 200237 Shanghai China
- State Key Laboratory of Organometallic Chemistry; Center for Excellence in Molecular Synthesis; University of Chinese Academy of Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road 200032 Shanghai China
- State Key Laboratory and Institute of Elemento-Organic Chemistry; Nankai University; 300071 Tianjin P.R. China
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19
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Gui HZ, Gao YN, Wei Y, Shi M. Highly Efficient and Diastereoselective Construction of Trifluoromethyl-Containing Spiro[pyrrolidin-3,2'-oxindole] by a Catalyst-free Mutually Activated [3+2] Cycloaddition Reaction. Chemistry 2018; 24:10038-10043. [PMID: 29756337 DOI: 10.1002/chem.201801971] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2018] [Revised: 05/05/2018] [Indexed: 01/24/2023]
Abstract
A catalyst-free self-catalyzed [3+2] cycloaddition reaction of isatin-derived α-(trifluoromethyl)imines with vinylpyridines is reported. The reaction offers a straightforward and atom-economical procedure for the preparation of a series of 5'-trifluoromethyl-spiro[pyrrolidin-3,2'-oxindoles] in excellent yields and diastereoselectivities. The reaction mechanism has been investigated by control experiments, DFT calculation of pKa values and the kinetic profiles, revealing that this reaction featured the mutual activation between isatin-derived α-(trifluoromethyl)imines and vinylpyridine to generate the reactive species.
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Affiliation(s)
- Hou-Ze Gui
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, China
| | - Yu-Ning Gao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, China.,State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China.,State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
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Thanetchaiyakup A, Rattanarat H, Chuanopparat N, Ngernmeesri P. One-pot synthesis of substituted indolo[1,2-a]quinolines under transition-metal-free conditions. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.085] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zhao HY, Wu FS, Yang L, Liang Y, Cao XL, Wang HS, Pan YM. Catalyst- and solvent-free approach to 2-arylated quinolines via [5 + 1] annulation of 2-methylquinolines with diynones. RSC Adv 2018; 8:4584-4587. [PMID: 35539512 PMCID: PMC9077778 DOI: 10.1039/c7ra12716b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 01/20/2018] [Indexed: 12/21/2022] Open
Abstract
A novel route for the synthesis of 2-arylated quinolines through a [5 + 1] annulation directly from 2-methylquinolines and diynones under catalyst-free and solvent-free conditions was disclosed. This synthetic process was atom-economic, with good tolerance of a broad range of functional groups, and with great practical worth.
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Affiliation(s)
- Hai-Yuan Zhao
- School of Life and Environmental Sciences, Guilin University of Electronic Technology Guilin 541004 China
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 China +86-773-5803930
| | - Fu-Song Wu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 China +86-773-5803930
| | - Li Yang
- Guangxi Key Laboratory of Special Non-wood Forest Cultivation and Utilization, Guangxi Zhuang Autonomous Region Forestry Research Institute Nanning 530002 China
| | - Ying Liang
- School of Life and Environmental Sciences, Guilin University of Electronic Technology Guilin 541004 China
| | - Xiao-Lin Cao
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 China +86-773-5803930
| | - Heng-Shan Wang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 China +86-773-5803930
| | - Ying-Ming Pan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences of Guangxi Normal University Guilin 541004 China +86-773-5803930
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