1
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Mandal PK, Patel S, Katukojvala S. Enal-azomethine ylides: application in the synthesis of functionalized pyrroles. Org Biomol Chem 2024; 22:5734-5738. [PMID: 38953694 DOI: 10.1039/d4ob00859f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Rhodium-catalyzed [3 + 2] annulation of diazoenals and N-alkyl imines resulted in N-alkyl-pyrrole-3-carbaldehyde derivatives. The reaction involves thermal 6π-electrocyclization and aromatization of a new class of enal-azomethine ylides (EAYs). The EAYs derived from dihydroisoquinoline and 2H-azirine gave fused-pyrrole and pyridine derivatives, respectively. The synthetic importance of pyrrole products has been demonstrated by one-step synthesis of the biologically relevant pyrrolo[3,2-c]quinoline scaffold as well as pyrrolo[2,1-a]isoquinoline which is a core structure of lamellarin alkaloids.
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Affiliation(s)
- Pratap Kumar Mandal
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh, 462066 India.
| | - Sandeep Patel
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh, 462066 India.
| | - Sreenivas Katukojvala
- Department of Chemistry, Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh, 462066 India.
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2
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Antonova YA, Nelyubina YV, Ioffe SL, Tabolin AA. [3+3]-Annulation of Cyclic Nitronates with Vinyl Diazoacetates: Diastereoselective Synthesis of Partially Saturated [1,2]Oxazino[2,3- b][1,2]oxazines and Their Base-Promoted Ring Contraction to Pyrrolo[1,2- b][1,2]oxazine Derivatives. Molecules 2023; 28:molecules28073025. [PMID: 37049788 PMCID: PMC10096057 DOI: 10.3390/molecules28073025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/23/2023] [Accepted: 03/24/2023] [Indexed: 04/14/2023] Open
Abstract
A rhodium(II)-catalyzed reaction of cyclic nitronates (5,6-dihydro-4H-1,2-oxazine N-oxides) with vinyl diazoacetates proceeds as a [3+3]-annulation producing bicyclic unsaturated nitroso acetals (4a,5,6,7-tetrahydro-2H-[1,2]oxazino[2,3-b][1,2]oxazines). Optimization of reaction conditions revealed the use of Rh(II) octanoate as the preferred catalyst in THF at room temperature, which allows the preparation of target products in good yields and excellent diastereoselectivity. Under basic conditions, namely, the combined action of DBU and alcohol, these nitroso acetals undergo ring contraction of an unsaturated oxazine ring into the corresponding pyrrole. Both transformations can be performed in a one-pot fashion, thus constituting a quick approach to oxazine-annulated pyrroles from available starting materials, such as nitroalkenes, olefins, and diazo compounds.
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Affiliation(s)
- Yulia A Antonova
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prosp. 47, Moscow 119991, Russia
| | - Yulia V Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Vavilov Str. 28, Moscow 119991, Russia
| | - Sema L Ioffe
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prosp. 47, Moscow 119991, Russia
| | - Andrey A Tabolin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prosp. 47, Moscow 119991, Russia
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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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Zhang C, Wang W, Zhu X, Chen L, Luo H, Guo M, Liu D, Liu F, Zhang H, Li Q, Lin J. Synthesis of Indolizines via Tf 2O-Mediated Cascade Reaction of Pyridyl-enaminones with Thiophenols/Thioalcohols. Org Lett 2023; 25:1192-1197. [PMID: 36779678 DOI: 10.1021/acs.orglett.3c00177] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
A cost-effective, highly regioselective and metal-free version for the synthesis of indolizine derivatives by means of Tf2O-mediated cascade reaction of pyridyl-enaminones and thiophenols/thioalcohols under mild reaction conditions has been reported. Diverse electron-rich indolizine derivatives could be obtained in up to 94% yield via the selective 1,4-addition of vinyl iminium triflate tandem cyclization/aromatization, which allowed the simultaneous construction of C-N and C-S/and one example of C-Se bonds.
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Affiliation(s)
- Changyuan Zhang
- Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology, College of Chemistry and Bio-engineering, Yichun University, Yichun, 336000, P.R. China
| | - Wei Wang
- Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology, College of Chemistry and Bio-engineering, Yichun University, Yichun, 336000, P.R. China
| | - Xuncheng Zhu
- Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology, College of Chemistry and Bio-engineering, Yichun University, Yichun, 336000, P.R. China
| | - Lulu Chen
- Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology, College of Chemistry and Bio-engineering, Yichun University, Yichun, 336000, P.R. China
| | - Hejiang Luo
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, P.R. China
| | - Mengping Guo
- Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology, College of Chemistry and Bio-engineering, Yichun University, Yichun, 336000, P.R. China
| | - Dan Liu
- Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology, College of Chemistry and Bio-engineering, Yichun University, Yichun, 336000, P.R. China
| | - Fan Liu
- Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology, College of Chemistry and Bio-engineering, Yichun University, Yichun, 336000, P.R. China
| | - Huisheng Zhang
- Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology, College of Chemistry and Bio-engineering, Yichun University, Yichun, 336000, P.R. China
| | - Qi Li
- Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology, College of Chemistry and Bio-engineering, Yichun University, Yichun, 336000, P.R. China
| | - Jianping Lin
- Key Laboratory of Jiangxi University for Applied Chemistry and Chemical Biology, College of Chemistry and Bio-engineering, Yichun University, Yichun, 336000, P.R. China
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5
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Sumanth G, Lakshmikanth K, Saini SM, Mundhe P, Shivaprasad K, Chandrashekharappa S. Phenyl pyrrolo [1,2-a] quinolines- finding of a key by-product during quinolinium salt preparation. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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6
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Lv KH, Zhao QS, Zhao KH, Yang JM, Yan SJ. Cu-Catalyzed Oxidative [3 + 2] Annulation of 2-(Pyridine-2-yl)acetates with Maleimides: Synthesis of 1 H-Pyrrolo[3,4- b]indolizine-1,3-diones. J Org Chem 2022; 87:15301-15311. [DOI: 10.1021/acs.joc.2c01879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Kai-Hong Lv
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Qing-Sheng Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Ke-Hua Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Jia-Ming Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Sheng-Jiao Yan
- Key Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University), Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, P. R. China
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7
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Li X, Chen Z, Chen W, Xie X, Zhou H, Liao Y, Yu F, Huang J. B 2pin 2-Mediated Cascade Cyclization/Aromatization Reaction: Facial Access to Functionalized Indolizines. Org Lett 2022; 24:7372-7377. [PMID: 36173232 DOI: 10.1021/acs.orglett.2c02905] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Herein, a B2pin2-mediated radical cascade cyclization/aromatization reaction of enaminone with pyridine is described. This strategy provides a practical way for the construction of valuable functionalized indolizines under metal-, external oxidant-, and base-free conditions, which could be compatible with various kinds of functional groups, such as halogen, π-system, heterocycle, ferrocenyl, etc. A preliminary mechanism investigation indicated that the pyridine-boryl radical formed in situ triggered the reaction to occur.
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Affiliation(s)
- Xiaoning Li
- School of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou 341000, PR China
| | - Zunsheng Chen
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Weiming Chen
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Xin Xie
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Hui Zhou
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Yingmei Liao
- School of Pharmacy, Gannan Medical University, Ganzhou 341000, PR China
| | - Fuchao Yu
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Jiuzhong Huang
- School of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Education, Gannan Medical University, Ganzhou 341000, PR China
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8
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Coinage metal-catalyzed carbo- and heterocyclizations involving alkenyl carbene intermediates as C3 synthons. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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9
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Zhu Y, Yang L, Zhang X, Xu W, He J, Wang H, Lang M, Peng S. Copper-Catalyzed Cycloadditions of Diazo Compounds with Imidazolidines/Hexahydropyrimidines for the Syntheses of N-Heterocycles. Org Lett 2022; 24:6443-6448. [PMID: 36017905 DOI: 10.1021/acs.orglett.2c02561] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Reported herein are the unprecedented copper-catalyzed formal [n + 1]/[n + 3] (n = 5, 6) cycloadditions of diazo compounds with imidazolidines/hexahydropyrimidines, thus providing a general, economical, and efficient route to construct different sized (six- to nine-membered) diaza-heterocycles in moderate to excellent yields under mild reaction conditions. This strategy features the use of copper catalyst to accomplish such diverse annulations and the utilization of imidazolidines/hexahydropyrimidines as stable 1,5-/1,6-dipoles.
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Affiliation(s)
- Yuqi Zhu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Liangliang Yang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Xue Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Wendi Xu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Jieyin He
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Haiyang Wang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Ming Lang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
| | - Shiyong Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, P. R. China
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10
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Brambilla E, Abbiati G, Caselli A, Pirovano V, Rossi E. Coinage metal carbenes in heterocyclic synthesis via formation of new carbon-heteroatom bonds. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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11
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Malviya BK, Jassal AK, Karnatak M, Verma VP, Sharma S. Electro-Oxidative sp 3 C-H Bond Functionalization and Annulation Cascade: Synthesis of Novel Heterocyclic Substituted Indolizines. J Org Chem 2022; 87:2898-2911. [PMID: 35104140 DOI: 10.1021/acs.joc.1c02773] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Indolizine derivatives are prevalent in many synthetic intermediates, pharmaceuticals, and organic materials. Herein, we report a novel electro-oxidative cascade cyclization reaction that uses electricity as the primary energy input to promote the reaction, leading to a series of heterocyclic substituted indolizine derivatives under exogenous-oxidant-free conditions. It is noteworthy that this electrochemical method provides a novel strategy for generating heterocyclic diversity of quinazolinones and quinolines on indolizines. In addition, the sole byproduct in the reaction was molecular hydrogen.
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Affiliation(s)
- Bhanwar Kumar Malviya
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur, Rajasthan 313001, India
| | - Amanpreet Kaur Jassal
- Department of Chemistry, Indian Institute of Technology, Delhi, New Delhi 110016, India
| | - Manvika Karnatak
- Department of Chemistry, Banasthali University, Newai-Jodhpuriya Road, Vanasthali, Rajasthan 304022, India
| | - Ved Prakash Verma
- Department of Chemistry, Banasthali University, Newai-Jodhpuriya Road, Vanasthali, Rajasthan 304022, India
| | - Siddharth Sharma
- Department of Chemistry, Mohanlal Sukhadia University, Udaipur, Rajasthan 313001, India
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12
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Xu X, Feng H, Zhang X, Song L, Van Meervelt L, Van der Eycken J, Harvey JN, Van der Eycken EV. Pd-Catalyzed Ring Restructuring of Oxazolidines with Alkenes Leading to Fused Polycyclic Indolizines. Org Lett 2022; 24:1232-1236. [DOI: 10.1021/acs.orglett.2c00007] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Xianjun Xu
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Huangdi Feng
- College of Chemistry and Chemical Engineering and Shanghai Engineering Research Center of Textile Chemistry and Cleaner Production, Shanghai University of Engineering Science, Shanghai 201620, China
| | - Xiaoyong Zhang
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
- Institute of Systems and Physical Biology, Shenzhen Bay Laboratory, Shenzhen 518055, China
| | - Liangliang Song
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Luc Van Meervelt
- Biomolecular Architecture, Department of Chemistry, KU Leuven Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Johan Van der Eycken
- Laboratory for Organic and Bio-Organic Synthesis, Department of Organic and Macromolecular Chemistry, Ghent University, KriJgslaan 281 (S.4), B-9000 Ghent, Belgium
| | - Jeremy N. Harvey
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Erik V. Van der Eycken
- Laboratory for Organic & Microwave-Assisted Chemistry (LOMAC), Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
- Peoples’ Friendship University of Russia (RUDN University), Miklukho-Maklaya Street 6, Moscow 117198, Russia
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13
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Badaro JSA, Koszarna B, Bousquet M, Ouellette ET, Jacquemin D, Gryko DT. The Kröhnke synthesis of benzo[a]indolizines revisited: towards small, red light emitters. Org Chem Front 2022. [DOI: 10.1039/d2qo00097k] [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
Benzo[a]indolizines with an ordered arrangement of various electron-withdrawing substituents (NO2, CF3, CN, CO2R and COPh) were prepared directly from pyridinium salts and chloronitroarenes, allowing for refined control of the photophysical...
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14
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Zhang XJ, Wang Z, Zhang H, Gao JJ, Yang KR, Fan WY, Wu RX, Feng ML, Zhu W, Zhu YP. Iodine-Mediated Domino Cyclization for One-Pot Synthesis of Indolizine-Fused Chromones via Metal-Free sp 3 C-H Functionalization. J Org Chem 2021; 87:835-845. [PMID: 34962788 DOI: 10.1021/acs.joc.1c02508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An efficient method for the synthesis of new indolizine-fused chromones has been accomplished from ethyl (E)-3-(2-acetylphenoxy)acrylates and pyridines in a "one-pot" manner. Facile operation in open-air, metal-free, and mild conditions renders this protocol particularly practical and attractive. Moreover, this method can simultaneously construct two molecular fragments of chromone and indolizine. Scale-up experiment and the construction of natural products further prove the practicability of this strategy.
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Affiliation(s)
- Xiang-Jin Zhang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, PR China
| | - Zhuo Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, PR China
| | - Han Zhang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, PR China
| | - Jing-Jing Gao
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, PR China
| | - Kai-Rui Yang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, PR China
| | - Wei-Yu Fan
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, PR China
| | - Rui-Xue Wu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, PR China
| | - Meng-Lin Feng
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, PR China
| | - Wei Zhu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, PR China
| | - Yan-Ping Zhu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation, Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Shandong, Yantai 264005, PR China
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15
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Wang YJ, Zhang Y, Qiang Z, Liang JY, Chen Z. Gold catalyzed efficient preparation of dihydrobenzofuran from 1,3-enyne and phenol. Chem Commun (Camb) 2021; 57:12607-12610. [PMID: 34755721 DOI: 10.1039/d1cc05260h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A gold catalyzed formal intermolecular [2+3] cyclo-coupling of 1,3-enynes with phenols was developed to prepare dihydrobenzofuran derivatives with the addition of 2,6-dichloropyridine N-oxide, in which, a highly ortho-selective phenol SEAr functionalization was achieved by using 1,3-enynes as α-oxo vinyl gold carbenoid surrogates.
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Affiliation(s)
- Yu-Jiang Wang
- Department of Chemistry, Renmin University of China, 59# Zhongguancun Street, Haidian, Beijing 100872, China.
| | - Yuan Zhang
- Department of Chemistry, Renmin University of China, 59# Zhongguancun Street, Haidian, Beijing 100872, China.
| | - Zou Qiang
- Department of Chemistry, Renmin University of China, 59# Zhongguancun Street, Haidian, Beijing 100872, China.
| | - Jia-Ying Liang
- Department of Chemistry, Renmin University of China, 59# Zhongguancun Street, Haidian, Beijing 100872, China.
| | - Zili Chen
- Department of Chemistry, Renmin University of China, 59# Zhongguancun Street, Haidian, Beijing 100872, China.
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16
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Sar S, Guha S, Prabakar T, Maiti D, Sen S. Blue Light-Emitting Diode-Mediated In Situ Generation of Pyridinium and Isoquinolinium Ylides from Aryl Diazoesters: Their Application in the Synthesis of Diverse Dihydroindolizine. J Org Chem 2021; 86:11736-11747. [PMID: 34369766 DOI: 10.1021/acs.joc.1c01209] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Blue light-emitting diode-mediated environmentally sustainable three component reactions among pyridine/isoquinoline 1/2, aryl diazoesters 3, and acrylic ester/3-alkenyl oxindoles 5/6 provide various dihydroindolizines 7 to 9 in excellent yield. The principle of the strategy is photolytic generation of nitrogen ylides from N-heteroarenes and aryl diazoesters and their subsequent [3 + 2] cycloaddition reaction with dipolarophiles. Detailed mechanistic analysis of the transformation through control experiments establishes this strategy as the foundation for the photolytic multicomponent reaction.
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Affiliation(s)
- Saibal Sar
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University Dadri, Chithera, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Souvik Guha
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University Dadri, Chithera, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Tejas Prabakar
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University Dadri, Chithera, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Debajit Maiti
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University Dadri, Chithera, Gautam Buddha Nagar, Uttar Pradesh 201314, India
| | - Subhabrata Sen
- Department of Chemistry, School of Natural Sciences, Shiv Nadar University Dadri, Chithera, Gautam Buddha Nagar, Uttar Pradesh 201314, India
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17
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Kim S, Lee JH, Yoon SH, Kim I. A regioselective [4 + 2] annulation approach to 5-acylindolizine-7-carbonitriles: generation of poly-substituted pyridines. Org Biomol Chem 2021; 19:5806-5817. [PMID: 34113946 DOI: 10.1039/d1ob00788b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction of β-ketonitrile and N-substituted pyrrole-2-carboxaldehyde in the presence of piperidinium acetate in CH3CN permitted regioselective access to 5-acylindolizine-7-carbonitrile through a domino Knoevenagel condensation-intramolecular aldol cyclization sequence. A wide range of new indolizine derivatives with a poly-functionalized pyridine moiety were readily synthesized in an atom-economical fashion, thereby expanding the indolizine chemical space for further applications.
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Affiliation(s)
- Sunmi Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
| | - Jeong Hwa Lee
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
| | - Seok Hyun Yoon
- Graduate Program of Industrial Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea
| | - Ikyon Kim
- College of Pharmacy and Yonsei Institute of Pharmaceutical Sciences, Yonsei University, 85 Songdogwahak-ro, Yeonsu-gu, Incheon, 21983, Republic of Korea.
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18
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Kong M, Zhou X, Chen Q, Zhang F, Zhao Y. Efficient synthesis of novel indolizine C-nucleoside analogues via coupling of sugar alkynes, pyridines and α-bromo carbonyl compounds in one pot. Carbohydr Res 2021; 505:108337. [PMID: 34058545 DOI: 10.1016/j.carres.2021.108337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/25/2021] [Accepted: 05/04/2021] [Indexed: 11/28/2022]
Abstract
The synthesis of novel indolizine C-nucleoside analogues has been achieved by the three-component coupling reaction of sugar alkynes, pyridines and α-bromo carbonyl compounds in one pot. The corresponding products are obtained in good to excellent yields. 49 examples have been given. The synthetic method is convenient, practical and efficient. It is suitable for various substrates including structurally diversified sugar alkynes with sensitive groups. The sugar alkynes include pyranosides, furanosides, and acyclic sugars. A plausible mechanism for the formation of indolizine C-nucleoside analogues has been elucidated.
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Affiliation(s)
- Man Kong
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Xiang Zhou
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Qianxia Chen
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China
| | - Fuyi Zhang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China.
| | - Yufen Zhao
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou, Henan, 450001, China; Institute of Drug Discovery Technology, Ningbo University, Ningbo, 315211, China
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19
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Zhang JQ, Hu D, Song J, Ren H. [3 + 2]-Annulation of gem-Difluoroalkenes and Pyridinium Ylides: Access to Functionalized 2-Fluoroindolizines. J Org Chem 2021; 86:4646-4660. [PMID: 33683121 DOI: 10.1021/acs.joc.0c03041] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A [3 + 2]-annulation of gem-difluoroalkenes and pyridinium ylides was developed employing ambient air as the sole oxidant in an open-vessel manner, affording a series of multifunctionalized 2-fluoroindolizines in moderate to good yields. In this reaction, gem-difluoroalkene acts as a C2 synthon and entirely avoids the competitive addition-elimination process, which provides facile access to 2-fluoroindolizines.
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Affiliation(s)
- Jun-Qi Zhang
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P.R. China
| | - Dandan Hu
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P.R. China
| | - Jinyu Song
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P.R. China
| | - Hongjun Ren
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P.R. China
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20
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Kuzu B, Gül S, Tan M, Menges N, Balci M. Synthesis of Indolizines by Dimerization of
N‐
Propargylated Pyrroles via Allene Intermediates. ChemistrySelect 2021. [DOI: 10.1002/slct.202100045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Burak Kuzu
- Pharmaceutical Chemistry Section Van Yüzüncü Yil University 65080 Van Turkey
| | - Sergen Gül
- Pharmaceutical Chemistry Section Van Yüzüncü Yil University 65080 Van Turkey
| | - Meltem Tan
- Pharmaceutical Chemistry Section Van Yüzüncü Yil University 65080 Van Turkey
- Department of Chemistry Middle East Technical University 06100 Ankara Turkey
| | - Nurettin Menges
- Pharmaceutical Chemistry Section Van Yüzüncü Yil University 65080 Van Turkey
- Department of Chemistry Middle East Technical University 06100 Ankara Turkey
| | - Metin Balci
- Department of Chemistry Middle East Technical University 06100 Ankara Turkey
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21
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Guguloth V, Balaboina R, Paidakula S, Thirukovela NS, Vadde R. AgI
‐promoted one‐pot synthesis of aminoindolizines via sequential
Mannich‐Grignard
addition and intramolecular cyclization in water. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | | | | | | | - Ravinder Vadde
- Department of Chemistry Kakatiya University Warangal India
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22
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Nechaev IV, Cherkaev GV, Solyev PN, Boev NV. Synthesis and Aerobic Dehydrogenation of Indolizin-1-ol Derivatives. J Org Chem 2021; 86:4220-4235. [DOI: 10.1021/acs.joc.0c03046] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ilya V. Nechaev
- ASINEX Ltd., 20 Geroev Panfilovtsev St., 125480 Moscow, Russia
| | - Georgij V. Cherkaev
- Enikolopov Institute of Synthetic Polymeric Materials, Russian Academy of Sciences, 70 Profsoyuznaya St., 117393 Moscow, Russia
| | - Pavel N. Solyev
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, 32 Vavilova St., 119991 Moscow, Russia
| | - Nikolay V. Boev
- ASINEX Ltd., 20 Geroev Panfilovtsev St., 125480 Moscow, Russia
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23
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He H, Nie J, Duan Y, Lin J, Yan S. An environmentally benign cascade reaction of 1,2,3-indantriones with ethyl 2-(pyridine-2-yl)acetates for site-selective synthesis of 5H-isochromeno[4,3-b]indolizin-5-ones. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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24
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Roy SA, Zgheib J, Zhou C, Arndtsen BA. Palladium catalyzed synthesis of indolizines via the carbonylative coupling of bromopyridines, imines and alkynes. Chem Sci 2020; 12:2251-2256. [PMID: 34163991 PMCID: PMC8179343 DOI: 10.1039/d0sc03977b] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 12/02/2020] [Indexed: 12/27/2022] Open
Abstract
We report herein the development of a palladium-catalyzed, multicomponent synthesis of indolizines. The reaction proceeds via the carbonylative formation of a high energy, mesoionic pyridine-based 1,3-dipole, which can undergo spontaneous cycloaddition with alkynes. Overall, this provides a route to prepare indolizines in a modular fashion from combinations of commercially available or easily generated reagents: 2-bromopyridines, imines and alkynes.
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Affiliation(s)
- Sébastien A Roy
- Department of Chemistry, McGill University 801 Sherbrooke Street W. Montreal QC H3A 0B8 Canada
| | - José Zgheib
- Department of Chemistry, McGill University 801 Sherbrooke Street W. Montreal QC H3A 0B8 Canada
| | - Cuihan Zhou
- Department of Chemistry, McGill University 801 Sherbrooke Street W. Montreal QC H3A 0B8 Canada
| | - Bruce A Arndtsen
- Department of Chemistry, McGill University 801 Sherbrooke Street W. Montreal QC H3A 0B8 Canada
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25
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Schifferer L, García Mancheño O. Metal‐ and Solvent‐Free, One‐Pot Synthesis of 3‐Unsubstituted Benzoindolizines. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lukas Schifferer
- Organic Chemistry Institute Münster University Corrensstraße 36 48149 Münster Germany
| | - Olga García Mancheño
- Organic Chemistry Institute Münster University Corrensstraße 36 48149 Münster Germany
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26
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Kardile RD, Liu RS. Gold(I)-Catalyzed Reactions between 2-(1-Alkynyl)-2-alken-1-ones and Vinyldiazo Ketones for Divergent Synthesis of Nonsymmetric Heteroaryl-Substituted Triarylmethanes: N- versus C-Attack Paths. Org Lett 2020; 22:8229-8233. [DOI: 10.1021/acs.orglett.0c02765] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Rahul Dadabhau Kardile
- Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
| | - Rai-Shung Liu
- Frontier Research Center of Matter Science and Technology, Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC
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27
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NH4I-catalyzed C–S bond formation via an oxidation relay strategy: Efficient access to dithioether decorated indolizines. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152368] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Dong S, Fu X, Xu X. [3+2]‐Cycloaddition of Catalytically Generated Pyridinium Ylide: A General Access to Indolizine Derivatives. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000276] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Shanliang Dong
- College of ChemistryChemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
| | - Xiang Fu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug DiscoverySchool of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
| | - Xinfang Xu
- College of ChemistryChemical Engineering and Materials ScienceSoochow University Suzhou 215123 China
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug DiscoverySchool of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 China
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29
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Teng L, Liu X, Guo P, Yu Y, Cao H. Visible-Light-Induced Regioselective Dicarbonylation of Indolizines with Oxoaldehydes via Direct C–H Functionalization. Org Lett 2020; 22:3841-3845. [DOI: 10.1021/acs.orglett.0c01094] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Lili Teng
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Xiang Liu
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Pengfeng Guo
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Yue Yu
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
| | - Hua Cao
- School of Chemistry and Chemical Engineering and Guangdong Cosmetics Engineering & Technology Research Center, Guangdong Pharmaceutical University, Zhongshan 528458, P. R. China
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30
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Sekar Kulandai Raj A, Liu R. Gold‐catalyzed [4+3]‐Annulations of Benzopyriliums with Vinyldiazo Carbonyls to Form Bicyclic Heptatriene Rings with Skeletal Rearrangement. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000292] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Antony Sekar Kulandai Raj
- Frontier Research Center for Fundamental and Basic Science of MattersDepartment of ChemistryNational Tsing-Hua University Hsinchu Taiwan, ROC
| | - Rai‐Shung Liu
- Frontier Research Center for Fundamental and Basic Science of MattersDepartment of ChemistryNational Tsing-Hua University Hsinchu Taiwan, ROC
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31
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Zhou K, Bao M, Huang J, Kang Z, Xu X, Hu W, Qian Y. Iron-catalyzed [3 + 2]-cycloaddition of in situ generated N-ylides with alkynes or olefins: access to multi-substituted/polycyclic pyrrole derivatives. Org Biomol Chem 2020; 18:409-414. [PMID: 31894231 DOI: 10.1039/c9ob02571e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
An iron-catalyzed one-pot three-component reaction of 1-substituted benzimidazoles with diazoacetates and electron-deficient alkynes or alkenes has been reported. Mechanistically, the reaction goes through a 1,3-dipolar cycloaddition of catalytically generated benzimidazolium N-ylides with various activated alkynes or alkenes, leading to multi-substituted and polycyclic fused pyrrole derivatives, respectively.
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Affiliation(s)
- Kai Zhou
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China.
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32
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Zhang Q, Ablajan K, Wang B, Ma H, Guo Z. One-Pot Synthesis of Indolizines Using TBHP as the Methylene Source Under Metal-Free Condition. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901803] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Qianwei Zhang
- Key Laboratory of Oil & Gas Fine Chemicals; Ministry of Education & Xinjiang Uyghur Autonomous Region; College of Chemistry and Chemical Engineering; Xinjiang University; 830046 Urumqi PR China
| | - Keyume Ablajan
- Key Laboratory of Oil & Gas Fine Chemicals; Ministry of Education & Xinjiang Uyghur Autonomous Region; College of Chemistry and Chemical Engineering; Xinjiang University; 830046 Urumqi PR China
| | - Bin Wang
- Key Laboratory of Oil & Gas Fine Chemicals; Ministry of Education & Xinjiang Uyghur Autonomous Region; College of Chemistry and Chemical Engineering; Xinjiang University; 830046 Urumqi PR China
| | - Huifang Ma
- Key Laboratory of Oil & Gas Fine Chemicals; Ministry of Education & Xinjiang Uyghur Autonomous Region; College of Chemistry and Chemical Engineering; Xinjiang University; 830046 Urumqi PR China
| | - Zhongqi Guo
- Key Laboratory of Oil & Gas Fine Chemicals; Ministry of Education & Xinjiang Uyghur Autonomous Region; College of Chemistry and Chemical Engineering; Xinjiang University; 830046 Urumqi PR China
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33
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Lu CJ, Yu X, Chen YT, Song QB, Wang H. Indolizine synthesis via copper-catalyzed cyclization of gem-difluoroalkenes and 2-(pyridin-2-yl)acetate derivatives. Org Chem Front 2020. [DOI: 10.1039/d0qo00553c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A novel and versatile approach to construct substituted indolizines through copper-catalyzed coupling cyclization of 2-(pyridin-2-yl)acetate with gem-difluoroalkenes has been developed.
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Affiliation(s)
- Chuan-Jun Lu
- College of Chemistry and Chemical Engineering
- Qingdao University
- China
- College of Chemical Engineering
- Zhejiang University of Technology
| | - Xin Yu
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Yu-Ting Chen
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Qing-Bao Song
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
| | - Hong Wang
- College of Chemical Engineering
- Zhejiang University of Technology
- Hangzhou 310014
- China
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34
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Nie B, Wu W, Zhang Y, Jiang H, Zhang J. Recent advances in the synthesis of bridgehead (or ring-junction) nitrogen heterocycles via transition metal-catalyzed C–H bond activation and functionalization. Org Chem Front 2020. [DOI: 10.1039/d0qo00510j] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An update on recent advances in the synthesis of bridgehead nitrogen fused heterocycles via transition metal-catalyzed C–H activation and functionalization is reported.
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Affiliation(s)
- Biao Nie
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Wanqing Wu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Yingjun Zhang
- State Key Laboratory of Anti-Infective Drug Development (NO. 2015DQ780357)
- Sunshine Lake Pharma Co
- Ltd
- HEC R&D Center
- Dongguan, 523871
| | - Huanfeng Jiang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou
- China
| | - Ji Zhang
- State Key Laboratory of Anti-Infective Drug Development (NO. 2015DQ780357)
- Sunshine Lake Pharma Co
- Ltd
- HEC R&D Center
- Dongguan, 523871
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35
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Atar AB, Kang J, Jadhav AH. A [bmim]Cl-promoted domino protocol using an isocyanide-based [4+1]-cycloaddition reaction for the synthesis of diversely functionalized 3-alkylamino-2-alkyl/aryl/hetero-aryl indolizine-1-carbonitriles under solvent-free conditions. NEW J CHEM 2020. [DOI: 10.1039/c9nj05738b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A room temperature-based ionic liquid [bmim]Cl-catalyzed multicomponent coupling strategy for the synthesis of 3-alkylamino-2-alkyl/aryl/hetero-aryl indolizine-1-carbonitrile derivatives under mild conditions is shown.
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Affiliation(s)
- Amol Balu Atar
- Department of Chemistry
- Sejong University
- Seoul 143-747
- South Korea
| | - Jongmin Kang
- Department of Chemistry
- Sejong University
- Seoul 143-747
- South Korea
| | - Arvind H. Jadhav
- Centre for Nano and Material Science (CNMS)
- Jain University
- Bangalore 562112
- India
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36
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Dong S, Huang J, Sha H, Qiu L, Hu W, Xu X. Copper-catalyzed formal [1 + 2 + 2]-annulation of alkyne-tethered diazoacetates and pyridines: access to polycyclic indolizines. Org Biomol Chem 2020; 18:1926-1932. [DOI: 10.1039/d0ob00222d] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A copper-catalyzed formal [1 + 2 + 2]-annulation of alkyne-tethered diazo compounds with pyridines, which affords polycyclic fused indolizine derivatives with broad substrate generality, has been reported.
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Affiliation(s)
- Shanliang Dong
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Jingjing Huang
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Hongkai Sha
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Lihua Qiu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Wenhao Hu
- Guangdong Key Laboratory of Chiral Molecule and Drug Discovery
- School of Pharmaceutical Sciences
- Sun Yat-sen University
- Guangzhou 510006
- China
| | - Xinfang Xu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
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37
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Liu P, Yang M, Gong Y, Yu Y, Zhao YL. Copper-Catalyzed Cascade Cyclization Reaction of Enamines and Electron-Deficient Terminal Alkynes: Synthesis of Polysubstituted Pyrido[1,2-a]indoles. Org Lett 2019; 22:36-40. [DOI: 10.1021/acs.orglett.9b03739] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pei Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Ming Yang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yue Gong
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yang Yu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Yu-Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China
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38
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Sun J, Han J, Zhang Y, Liu Y. CuBr
2
‐Promoted Multicomponent Aerobic Reaction for the Synthesis of 1,2,3‐Triaroylindolizines. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3618] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jinwei Sun
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Chemistry and Materials ScienceNanjing University of Information Science and Technology Nanjing Jiangsu 210044 P.R. China
| | - Junwen Han
- School of Chemistry and Material ScienceJiangsu Normal University Xuzhou Jiangsu 221116 P.R. China
| | - Yuxuan Zhang
- School of Chemistry and Material ScienceJiangsu Normal University Xuzhou Jiangsu 221116 P.R. China
| | - Yun Liu
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, School of Chemistry and Materials ScienceNanjing University of Information Science and Technology Nanjing Jiangsu 210044 P.R. China
- School of Chemistry and Material ScienceJiangsu Normal University Xuzhou Jiangsu 221116 P.R. China
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39
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Raj ASK, Liu RS. Gold-Catalyzed Bicyclic Annulations of 2-Alkynylbenzaldehydes with Vinyldiazo Carbonyls that Serve as Five-atom Building Units. Angew Chem Int Ed Engl 2019; 58:10980-10984. [PMID: 31132199 DOI: 10.1002/anie.201905350] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/23/2019] [Indexed: 12/23/2022]
Abstract
This work reports gold-catalyzed bicyclic annulations of 2-alkynyl-1-carbonylbenzenes with vinyldiazo ketones that serve as five-atom building units. The importance of these reactions is to access 4,5-dihydro-benzo[g]indazoles, which form the structural cores of various bioactive molecules. According to our mechanistic analysis, we postulate initial [5+4]-cycloadditions between benzopyrilium intermediates and vinyldiazo ketones, followed by 6-π-electrocyclizations to achieve the excellent stereoselectivity.
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Affiliation(s)
- Antony Sekar Kulandai Raj
- Frontier Research Center for Fundamental and Applied Science of Matters, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan, ROC
| | - Rai-Shung Liu
- Frontier Research Center for Fundamental and Applied Science of Matters, Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan, ROC
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40
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Fang Y, He L, Pan W, Yang Y. Iodine-mediated one-pot synthesis of C-3 acylated indolizines from pyridines, aryl methyl ketones and acrylate derivatives. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.05.058] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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41
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Raj ASK, Liu R. Gold‐Catalyzed Bicyclic Annulations of 2‐Alkynylbenzaldehydes with Vinyldiazo Carbonyls that Serve as Five‐atom Building Units. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905350] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Antony Sekar Kulandai Raj
- Frontier Research Center for Fundamental and Applied Science of MattersDepartment of ChemistryNational Tsing-Hua University Hsinchu Taiwan, ROC
| | - Rai‐Shung Liu
- Frontier Research Center for Fundamental and Applied Science of MattersDepartment of ChemistryNational Tsing-Hua University Hsinchu Taiwan, ROC
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42
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Yang J, Zhu Y, Tse AKW, Zhou X, Chen Y, Tse YC, Wong KMC, Ho CY. Synthesis and study of Au(iii)-indolizine derivatives: turn-on luminescence by photo-induced controlled release. Chem Commun (Camb) 2019; 55:4471-4474. [PMID: 30839955 DOI: 10.1039/c8cc10177a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The photo- and structural properties of a series of Au(iii) indolizine complexes were determined. Controlled release of halogenated indolizine derivatives from the corresponding Au(iii) complexes was achieved by photoinduced C-X bond formation, which provided turn-on luminescence with an increase in emission intensity of up to 67 times.
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Affiliation(s)
- Jie Yang
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China.
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43
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Zhong K, Shan C, Zhu L, Liu S, Zhang T, Liu F, Shen B, Lan Y, Bai R. Theoretical Study of the Addition of Cu-Carbenes to Acetylenes to Form Chiral Allenes. J Am Chem Soc 2019; 141:5772-5780. [PMID: 30887803 DOI: 10.1021/jacs.8b13055] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Terminal alkynes have become one of the most versatile building blocks for C-C bond construction in the past few decades, and they are usually considered to convert to acetylides before further transformations. In this study, a novel direct nucleophilic addition mode for Cu(I)-catalyzed cross-coupling of terminal alkynes and N-tosylhydrazones to synthesize chiral allenes is proposed, and it was investigated by density functional theory with the M11-L density functional. Three different reaction pathways were considered and investigated. The computational results show that the proposed reaction pathway, which includes direct nucleophilic attack of protonated acetylene, deprotonation of the vinyl cation, and catalyst regeneration, is the most favorable pathway. Another possible deprotonation-carbenation-insertion pathway is shown to be unfavorable. The direct nucleophilic addition step is the rate- and enantioselectivity-determining step in the catalytic cycle. Noncovalent interaction analysis shows that the steric effect between the methyl group of the carbene moiety and the naphthalyl group of the bisoxazoline ligand is important to control the enantioselectivity. In addition, calculation of a series of chiral bisoxazoline ligands shows that a bulky group on the oxazoline ring is favorable for high enantioselectivity, which agrees with experimental observations. Moreover, copper acetylides are stable, and their generation is a favorable pathway in the absence of chiral bisoxazoline ligands.
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Affiliation(s)
- Kangbao Zhong
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry , Chongqing University , Chongqing 400030 , China
| | - Chunhui Shan
- Postdoctoral Station of Biomedical Engineering , Chongqing University , Chongqing 400030 , China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry , Chongqing University , Chongqing 400030 , China
| | - Song Liu
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry , Chongqing University , Chongqing 400030 , China
| | - Tao Zhang
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry , Chongqing University , Chongqing 400030 , China
| | - Fenru Liu
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry , Chongqing University , Chongqing 400030 , China
| | - Boming Shen
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry , Chongqing University , Chongqing 400030 , China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry , Chongqing University , Chongqing 400030 , China.,College of Chemistry and Molecular Engineering , Zhengzhou University , Zhengzhou 450001 , China
| | - Ruopeng Bai
- School of Chemistry and Chemical Engineering, Chongqing Key Laboratory of Theoretical and Computational Chemistry , Chongqing University , Chongqing 400030 , China
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44
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Motornov VA, Tabolin AA, Nelyubina YV, Nenajdenko VG, Ioffe SL. Copper-mediated oxidative [3 + 2]-annulation of nitroalkenes and pyridinium ylides: general access to functionalized indolizines and efficient synthesis of 1-fluoroindolizines. Org Biomol Chem 2019; 17:1442-1454. [PMID: 30672946 DOI: 10.1039/c8ob03126f] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A general method for the synthesis of substituted indolizines by copper(ii) acetate-promoted oxidative [3 + 2]-annulation of α-fluoronitroalkenes with in situ generated pyridinium ylides was developed. Application of the copper(ii) acetate-2,6-lutidine system provides efficient access to various 1-fluoroindolizines in up to 81% yield. Both electron-rich and electron-deficient nitroalkenes as well as different pyridinium and isoquinolinium salts can be involved in the reaction. Moreover, it was found that copper-mediated annulation is applicable for other α-substituted (alkyl, chloro, and ester) nitroalkenes giving rise to the corresponding indolizines. First synthesis of monofluorinated [3,2,2]cyclazines was demonstrated via oxidative annulation of 3-unsubstituted fluoroindolizines with diethyl acetylene dicarboxylate.
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Affiliation(s)
- Vladimir A Motornov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky prosp. 47, Moscow, 119991, Russia.
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45
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Yu Y, Yue Z, Ding LG, Zhou Y, Cao H. Mn(OAc)3
-Mediated Regioselective C-H Phosphonylation of Indolizines with H
-Phosphonates. ChemistrySelect 2019. [DOI: 10.1002/slct.201804056] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Yue Yu
- School of Chemistry and Chemical Engineering; Guangdong Pharmaceutical University; Zhongshan 528458 P. R. China
| | - Zhongbao Yue
- Zhongbao Yue; Liu-gang Ding and Yong Zhou; Research and Development Centre, Infinitus (China) Company Ltd.; Guangzhou 510665 P. R. China
| | - Liu-gang Ding
- Zhongbao Yue; Liu-gang Ding and Yong Zhou; Research and Development Centre, Infinitus (China) Company Ltd.; Guangzhou 510665 P. R. China
| | - Yong Zhou
- Zhongbao Yue; Liu-gang Ding and Yong Zhou; Research and Development Centre, Infinitus (China) Company Ltd.; Guangzhou 510665 P. R. China
| | - Hua Cao
- School of Chemistry and Chemical Engineering; Guangdong Pharmaceutical University; Zhongshan 528458 P. R. China
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46
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López LA, González J. Copper(i)-carbenes as key intermediates in the [3 + 2]-cyclization of pyridine derivatives with alkenyldiazoacetates: a computational study. Org Biomol Chem 2019; 17:646-654. [PMID: 30575834 DOI: 10.1039/c8ob02676a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This work reports a computational study of the copper(i)-catalyzed regioselective synthesis of indolizine derivatives through the [3 + 2]-cyclization reaction of vinyldiazo acetates and pyridine derivatives. This reaction is predicted to proceed via a multi-step process with the initial decomposition of the diazo function and generation of an electrophilic copper(i) carbene intermediate. Subsequent attack of the pyridine derivative at the vinylogous position of the carbene would generate a vinylcuprate intermediate that would evolve to the final products through a sequence involving cyclization, reductive elimination, metal decoordination and final oxidative aromatization. According to our calculations, an alternative pathway involving the initial activation of the pyridine seems unlikely. These theoretical results could pave the way for further developments in vinyldiazo chemistry.
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Affiliation(s)
- Luis A López
- Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, Julián Clavería, 8, 33006 Oviedo, Spain.
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47
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Ciszewski ŁW, Rybicka-Jasińska K, Gryko D. Recent developments in photochemical reactions of diazo compounds. Org Biomol Chem 2019; 17:432-448. [DOI: 10.1039/c8ob02703j] [Citation(s) in RCA: 146] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Chemistry of diazo compounds is dominated by transition metal catalysis but recently, photoinitiated reactions of diazo compounds have attracted a lot of attention. This mini-review describes recent discoveries on the reactivity of diazo compounds under light irradiation.
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Affiliation(s)
- Łukasz W. Ciszewski
- Institute of Organic Chemistry Polish Academy of Sciences
- 01-224 Warsaw
- Poland
| | | | - Dorota Gryko
- Institute of Organic Chemistry Polish Academy of Sciences
- 01-224 Warsaw
- Poland
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48
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Zhang Q, Wang B, Ma H, Ablajan K. Transition-metal-free catalyzed [3+2] cycloadditions/oxidative aromatization reactions for the synthesis of annulated indolizines. NEW J CHEM 2019. [DOI: 10.1039/c9nj03076j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
A transition-metal-free catalyzed [3+2] cycloadditions/oxidative aromatization three-component reactions for direct construction of annulated indolizines was reported.
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Affiliation(s)
- Qianwei Zhang
- Key Laboratory of Oil & Gas Fine Chemicals
- Ministry of Education & Xinjiang Uyghur Autonomous Region
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi 830046
| | - Bin Wang
- Key Laboratory of Oil & Gas Fine Chemicals
- Ministry of Education & Xinjiang Uyghur Autonomous Region
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi 830046
| | - Huifang Ma
- Key Laboratory of Oil & Gas Fine Chemicals
- Ministry of Education & Xinjiang Uyghur Autonomous Region
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi 830046
| | - Keyume Ablajan
- Key Laboratory of Oil & Gas Fine Chemicals
- Ministry of Education & Xinjiang Uyghur Autonomous Region
- College of Chemistry and Chemical Engineering
- Xinjiang University
- Urumqi 830046
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49
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Vaitla J, Bayer A, Hopmann KH. Iron‐Catalyzed Carbenoid‐Transfer Reactions of Vinyl Sulfoxonium Ylides: An Experimental and Computational Study. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201810451] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Janakiram Vaitla
- Hylleraas Centre for Quantum Molecular SciencesDepartment of ChemistryUniversity of Tromsø–The Arctic University of Norway 9037 Tromsø Norway
| | - Annette Bayer
- Department of ChemistryUniversity of Tromsø–The Arctic University of Norway 9037 Tromsø Norway
| | - Kathrin H. Hopmann
- Hylleraas Centre for Quantum Molecular SciencesDepartment of ChemistryUniversity of Tromsø–The Arctic University of Norway 9037 Tromsø Norway
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50
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Vaitla J, Bayer A, Hopmann KH. Iron-Catalyzed Carbenoid-Transfer Reactions of Vinyl Sulfoxonium Ylides: An Experimental and Computational Study. Angew Chem Int Ed Engl 2018; 57:16180-16184. [PMID: 30318836 DOI: 10.1002/anie.201810451] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Indexed: 12/22/2022]
Abstract
A method for the generation of unprecedented vinyl carbenoids from sulfoxonium ylides has been developed and applied in the synthesis of a diverse array of heterocycles such as indolizines, pyrroles, 3-pyrrolin-2-ones, and furans. The reactions proceed by FeBr2 catalysis under mild reaction conditions with a broad substrate scope. A reaction pathway involving iron carbenoids is proposed based on a series of control experiments and DFT calculations.
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Affiliation(s)
- Janakiram Vaitla
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, University of Tromsø-The Arctic University of Norway, 9037, Tromsø, Norway
| | - Annette Bayer
- Department of Chemistry, University of Tromsø-The Arctic University of Norway, 9037, Tromsø, Norway
| | - Kathrin H Hopmann
- Hylleraas Centre for Quantum Molecular Sciences, Department of Chemistry, University of Tromsø-The Arctic University of Norway, 9037, Tromsø, Norway
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