1
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Ji MM, Liu PR, Yan JD, He YY, Li H, Ma AJ, Peng JB. Ruthenium-Catalyzed Carbonylation of α-Aminoaryl-Tethered Alkylidenecyclopropanes: Synthesis of Eight-Membered Benzolactams. Org Lett 2024; 26:231-235. [PMID: 38165133 DOI: 10.1021/acs.orglett.3c03913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
The synthesis of medium-sized lactams is a great challenge because of the unfavorable transannular interactions and entropic barriers in the transition state. We have developed a ruthenium-catalyzed carbonylation of α-aminoaryl-tethered alkylidenecyclopropanes (ACPs) that allows for the efficient preparation of valuable eight-membered benzolactams under ligand-free conditions. The amino group served a dual role of both directing group and nucleophile to facilitate the metallacycle formation and the carbonylation.
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Affiliation(s)
- Miao-Miao Ji
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Peng-Rui Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Jun-Dong Yan
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Yong-Yu He
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Hongguang Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
- Guangdong Provincial Key Laboratory of Large Animal Models for Biomedicine, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Ai-Jun Ma
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Jin-Bao Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
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2
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Mali G, Kumar Yadav V, Priya H, Shukla M, Pandey P, Kumar A, Paranjothy M, Bhattacharyya S, Erande RD. The rapid construction and biological evaluation of densely substituted pyrrolo[1,2- a]indoles via a BF 3·OEt 2-assisted cascade approach. Org Biomol Chem 2023. [PMID: 38038241 DOI: 10.1039/d3ob01457f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Lewis-acid cascade reactions promoted by BF3·OEt2 are reported for the synthesis of highly substituted pyrrolo[1,2-a]indoles and congeners of benzofuro[2,3-b]indoles. These reactions are highly regio- and diastereoselective towards generating up to five contiguous stereogenic centers, including two vicinal quaternary centers. Furthermore, an established cascade approach and the mechanism proposed herein are well supported by quantum chemistry calculations. In addition, a self-dimerization intermediate was trapped and isolated to establish a strategy for potential access to both pyrrolo and benzo indole derivatives, leaving sufficient freedom for broadening. Furthermore, in-silico molecular docking and all atomistic molecular dynamic (MD) simulation analysis suggests that the synthesized pyrrolo[1,2-a]indole derivatives stably bind at the active site of the mycobacterial secreted tyrosine phosphatase B (MptpB) enzyme, an emerging anti-mycobacterial drug target. Deep learning-based affinity predictions and MMPBGBSA-based energy calculations of the docked poses are presented herein.
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Affiliation(s)
- Ghanshyam Mali
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India.
| | - Vinay Kumar Yadav
- Department of Bioscience & Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Himani Priya
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India.
| | - Manjari Shukla
- Department of Bioscience & Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Peeyush Pandey
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India.
| | - Akhilesh Kumar
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Manikandan Paranjothy
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India.
| | - Sudipta Bhattacharyya
- Department of Bioscience & Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Rohan D Erande
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India.
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3
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Li L, Zeng HH, Zhang YY, Liang JY, Zhang XZ, Peng JB. Pd/Cu catalyzed carbonylation of α-aminoaryl-tethered alkylidenecyclopropanes: synthesis of furoquinoline derivatives. Org Chem Front 2022. [DOI: 10.1039/d2qo01420c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A Pd/Cu catalyzed carbonylation of α-aminoaryl-tethered ACPs for the synthesis of furoquinoline derivatives has been developed. Oxygen was used as the terminal oxidant.
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Affiliation(s)
- Lin Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Hui-Hui Zeng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - You-Ya Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Jin-Yan Liang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Xiang-Zhi Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Jin-Bao Peng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
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4
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Alajarin M, Ballester FJ, Vivancos JA, Orenes RA, Vidal A, Sanchez-Andrada P, Marin-Luna M. Lewis Acid-Mediated Formation of 1,3-Disubstituted Spiro[cyclopropane-1,2′-indanes]: The Activating Effect of the Cyclopropane Walsh Orbital. J Org Chem 2020; 85:4565-4573. [DOI: 10.1021/acs.joc.0c00090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mateo Alajarin
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia 30100, Spain
| | - Francisco-Jose Ballester
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia 30100, Spain
| | - Juan-Antonio Vivancos
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia 30100, Spain
| | - Raul-Angel Orenes
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia 30100, Spain
| | - Angel Vidal
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia 30100, Spain
| | - Pilar Sanchez-Andrada
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia 30100, Spain
| | - Marta Marin-Luna
- Departamento de Quı́mica Orgánica, Facultad de Quı́mica, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, Murcia 30100, Spain
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5
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Du L, Han Y, Zhang H, Zhang Y, Zhao J, Liang Y. Synthesis of 1
H
‐Pyrrolo[1,2‐
a
]indoles
via
Lewis Acid‐Catalyzed Annulation of Propargylic Alcohols with 2‐Ethynylanilines. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901409] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Li‐Juan Du
- School of Chemical Engineering and TechnologyHebei University of Technology Tianjin 300130 People's Republic of China
| | - Ya‐Ping Han
- School of Chemical Engineering and TechnologyHebei University of Technology Tianjin 300130 People's Republic of China
| | - Hong‐Yu Zhang
- School of Chemical Engineering and TechnologyHebei University of Technology Tianjin 300130 People's Republic of China
| | - Yuecheng Zhang
- School of Chemical Engineering and TechnologyHebei University of Technology Tianjin 300130 People's Republic of China
| | - Jiquan Zhao
- School of Chemical Engineering and TechnologyHebei University of Technology Tianjin 300130 People's Republic of China
| | - Yong‐Min Liang
- State Key Laboratory of Applied Organic ChemistryLanzhou University Lanzhou 730000 People's Republic of China
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6
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Yu L, Shi M. The Construction of Molecular Complexity from Functionalized Alkylidenecyclopropanes (FACPs). Chemistry 2019; 25:7591-7606. [DOI: 10.1002/chem.201900245] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/26/2019] [Indexed: 01/16/2023]
Affiliation(s)
- Liu‐Zhu Yu
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of Sciences 345 Ling-Ling Lu Shanghai 200032 P. R. China
| | - Min Shi
- State Key Laboratory of Organometallic ChemistryCenter for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of Sciences 345 Ling-Ling Lu Shanghai 200032 P. R. China
- State Key Laboratory and Institute of Elemento-Organic ChemistryNankai University Tianjin 300071 P. R. China
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7
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Tao L, Shi M. Pd(II)-Catalyzed Cyclization-Oxidation of Urea-Tethered Alkylidenecyclopropanes. Org Lett 2018; 20:3017-3020. [PMID: 29722991 DOI: 10.1021/acs.orglett.8b01047] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A Pd(OAc)2-catalyzed intramolecular oxidative cyclization of urea-tethered alkylidenecyclopropanes with urea as a nitrogen source through a Pd(II)/Pd(IV) catalytic cycle has been presented, giving the corresponding cyclobuta[ b]indoline derivatives in moderate to good yields with a broad substrate scope. The reaction proceeds through a ring expansion of alkylidenecyclopropane along with the nucleophilic attack of nitrogen atom onto the in situ generated palladium carbenoid species as well as an oxidation process.
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Affiliation(s)
- Leyi Tao
- 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
- 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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8
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Gharpure SJ, Shelke YG. Cascade Radical Cyclization of N-Propargylindoles: Substituents Dictate Stereoselective Formation of N-Fused Indolines versus Indoles. Org Lett 2017; 19:5022-5025. [DOI: 10.1021/acs.orglett.7b02005] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Yogesh G. Shelke
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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9
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Fang W, Wei Y, Tang XY, Shi M. Gold(I)-Catalyzed Cycloisomerization of ortho
-(Propargyloxy)arenemethylenecyclopropanes Controlled by Adjacent Substituents at Aromatic Rings. Chemistry 2017; 23:6845-6852. [DOI: 10.1002/chem.201700600] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Indexed: 01/24/2023]
Affiliation(s)
- Wei Fang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Meilong Road No. 130 Shanghai 200237 P.R. China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
| | - Xiang-Ying Tang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering; East China University of Science and Technology; Meilong Road No. 130 Shanghai 200237 P.R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 P.R. China
- State Key Laboratory and Institute of Elemento-organic Chemistry; Nankai University; Tianjin 300071 P.R. China)
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10
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Hu XB, Chen K, Yang XY, Wei Y, Shi M. Lewis Acid-Catalyzed Stereoselective [7+7] Intermolecular Cyclization of Aniline-Tethered Alkylidenecyclopropanes: A One-Step Synthetic Protocol of 14-Membered Macrocyclic Dimers. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xu-Bo Hu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Kai Chen
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Xue-Yan Yang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Meilong Road Shanghai 200237 China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry; 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; 130 Meilong Road 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; 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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11
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Cao B, Simaan M, Marek I, Wei Y, Shi M. Palladium-catalyzed oxidative cyclization of aniline-tethered alkylidenecyclopropanes with O2: a facile protocol to selectively synthesize 2- and 3-vinylindoles. Chem Commun (Camb) 2017; 53:216-219. [DOI: 10.1039/c6cc08731k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile and versatile palladium catalyzed oxidative cyclization of aniline-tethered alkylidenecyclopropanes with O2 to selectively construct important synthetic intermediates 2- and 3-vinylindoles in moderate to good yields has been developed.
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Affiliation(s)
- Bo Cao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Marwan Simaan
- The Mallat Family Laboratory of Organic Chemistry
- Schulich Faculty of Chemistry and Lise Meitner-Minerva Center for Computational Quantum Chemistry
- Technion-Israel Institute of Technology
- Technion City
- Israel
| | - Ilan Marek
- The Mallat Family Laboratory of Organic Chemistry
- Schulich Faculty of Chemistry and Lise Meitner-Minerva Center for Computational Quantum Chemistry
- Technion-Israel Institute of Technology
- Technion City
- Israel
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- University of Chinese Academy of Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- School of Chemistry & Molecular Engineering
- East China University of Science and Technology
- Shanghai 200237
- China
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12
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Yu LZ, Chen K, Zhu ZZ, Shi M. Recent advances in the chemical transformations of functionalized alkylidenecyclopropanes (FACPs). Chem Commun (Camb) 2017; 53:5935-5945. [DOI: 10.1039/c7cc02596c] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Classification of functionalized alkylidenecyclopropanes (FACPs) and recent chemical transformations for the synthesis of novel and useful polycyclic and heterocyclic compounds.
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Affiliation(s)
- Liu-Zhu Yu
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Kai Chen
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Zi-Zhong Zhu
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
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13
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Li SS, Wu L, Qin L, Zhu YQ, Su F, Xu YJ, Dong L. Iridium(III)-Catalyzed Tandem [3 + 2] Annulation: Synthesis of Spirocyclic Phosphoramide Derivatives. Org Lett 2016; 18:4214-7. [PMID: 27553969 DOI: 10.1021/acs.orglett.6b01895] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Shuai-Shuai Li
- Key
Laboratory of Drug-Targeting and Drug Delivery System of the Education
Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041,China
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China
| | - Lin Wu
- Key
Laboratory of Drug-Targeting and Drug Delivery System of the Education
Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041,China
| | - Liu Qin
- Key
Laboratory of Drug-Targeting and Drug Delivery System of the Education
Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041,China
| | - Yu-Qin Zhu
- Key
Laboratory of Drug-Targeting and Drug Delivery System of the Education
Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041,China
| | - Fu Su
- Key
Laboratory of Drug-Targeting and Drug Delivery System of the Education
Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041,China
| | - Yan-Jun Xu
- Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences, Urumqi 830011, China
| | - Lin Dong
- Key
Laboratory of Drug-Targeting and Drug Delivery System of the Education
Ministry, West China School of Pharmacy, Sichuan University, Chengdu 610041,China
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14
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Ghosh A, Bainbridge DT, Stanley LM. Enantioselective Model Synthesis and Progress toward the Putative Structure of Yuremamine. J Org Chem 2016; 81:7945-51. [PMID: 27494137 DOI: 10.1021/acs.joc.6b01730] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
An enantioselective model synthesis of the 2,3-dihydro-1H-pyrrolo[1,2-a]indole core of the putative structure of yuremamine is reported in 39% overall yield and 96% ee over five steps. The model synthesis leverages enantioselective, rhodium-catalyzed hydroacylation of an N-vinylindole-2-carboxaldehyde as the key step in the installation of the stereochemical triad. An enantioselective synthesis of a densely functionalized dihydropyrroloindolone that maps onto the putative structure of yuremamine is demonstrated in 26% yield and 97% ee over eight steps.
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Affiliation(s)
- Avipsa Ghosh
- Department of Chemistry, Iowa State University , Ames, Iowa 50011, United States
| | - David T Bainbridge
- Department of Chemistry, Iowa State University , Ames, Iowa 50011, United States
| | - Levi M Stanley
- Department of Chemistry, Iowa State University , Ames, Iowa 50011, United States
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15
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Yuan YC, Liu HL, Hu XB, Wei Y, Shi M. Visible-Light-Induced Trifluoromethylation of Isonitrile-Substituted Methylenecyclopropanes: Facile Access to 6-(Trifluoromethyl)-7,8-Dihydrobenzo[k]phenanthridine Derivatives. Chemistry 2016; 22:13059-63. [PMID: 27433794 DOI: 10.1002/chem.201602920] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Indexed: 11/06/2022]
Abstract
A new visible-light-induced trifluoromethylation of isonitrile-substituted methylenecyclopropanes is developed. A range of substituted 6-(trifluoromethyl)-7,8-dihydrobenzo[k]phenanthridine derivatives are readily furnished by this newly developed tandem reaction with moderate to good yields. This reaction allows the direct formation of two six-membered rings and three new C-C bonds, including the C-CF3 bond, under visible light irradiation.
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Affiliation(s)
- Yu-Chao Yuan
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China
| | - Hou-Lu Liu
- Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai, 200444, P.R. China
| | - Xu-Bo Hu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, P.R. China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China.
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P.R. China. .,Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237, P.R. China.
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16
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Chen K, Liu JX, Tang XY, Shi M. A Selective RhI
-Catalyzed Substrate-Controlled C−C Bond Activation of Benzyl Sulfonamide/Alcohol-Tethered Alkylidenecyclopropanes. Chemistry 2016; 22:11549-53. [DOI: 10.1002/chem.201602366] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Kai Chen
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jia-Xin Liu
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Xiang-Ying Tang
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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17
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Abstract
The discovery of a series of novel organic reactions has made methylenecyclopropanes (MCPs) some of the most popular building blocks in synthetic organic chemistry during the past two decades. Among reported works, the construction of heterocycles from MCPs has highlighted new synthetic methodologies that afford more opportunities for the quick synthesis of elaborately substituted products, and this should draw a great deal of attention. However, reviews in this area are insufficient, and the latest monograph on heterocycle synthesis from MCPs was published 12 years ago. This review aims to summarize the novel organic reactions of MCPs to produce heterocycles published in recent years, which have provided specific and powerful tools for organic synthesis.
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Affiliation(s)
- Lei Yu
- Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu 225009, China.
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18
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Brønsted Acid Catalyzed [3+2]-Cycloaddition of 2-Vinylindoles with In Situ Generated 2-Methide-2H-indoles: Highly Enantioselective Synthesis of Pyrrolo[1,2-a]indoles. Chemistry 2016; 22:7074-8. [DOI: 10.1002/chem.201601020] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Indexed: 01/17/2023]
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19
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Yuan YC, Yang HB, Tang XY, Wei Y, Shi M. Unprecedented Oxycyanation of Methylenecyclopropanes for the Facile Synthesis of Benzoxazine Compounds Containing a Cyano Group. Chemistry 2016; 22:5146-50. [PMID: 26868457 DOI: 10.1002/chem.201505224] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2015] [Indexed: 01/29/2023]
Abstract
A novel intramolecular oxycyanation of methylenecyclopropanes is reported that proceeds through oxidative cleavage of the N-CN bond and subsequent palladium transfer from N to O of the amide group. A range of substituted benzo[d][1,3]oxazines with a cyano group are readily furnished by this newly developed oxycyanation reaction. Tris(4-trifluoromethylphenyl)phosphine as a ligand has been found to be crucial to effectively promote the transformation with high chemo- and regioselectivity. Moreover, the reaction outcome can be significantly affected by the electronic effect of the acyl group attached to the nitrogen atom of methylenecyclopropanes. When R(3) is a chloromethyl group, the pyrrolo[2,3-b]quinoline derivative is obtained by thermal-induced [3+2] cycloaddition of methylenecyclopropane to the methanediimine intermediate.
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Affiliation(s)
- Yu-Chao Yuan
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Hai-Bin Yang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China
| | - Xiang-Ying Tang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China.
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China.
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, China.
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20
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Fang W, Tang XY, Shi M. Gold(i)-catalyzed intramolecular hydroarylation and the subsequent ring enlargement of methylenecyclopropanes to cyclobutenes. RSC Adv 2016. [DOI: 10.1039/c6ra02549h] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Gold(i)-catalyzed intramolecular hydroarylation and the ring enlargement of methylenecyclopropanes containing aryl propargyl ether to give 2H-chromene derivatives and the corresponding cyclobutenes.
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Affiliation(s)
- Wei Fang
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai
- China
| | - Xiang-Ying Tang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai
- China
- State Key Laboratory of Organometallic Chemistry
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21
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Chen K, Tang XY, Shi M. Rh(ii)-Catalyzed formation of pyrrolo[2,3-b]quinolines from azide-methylenecyclopropanes and isonitriles. Chem Commun (Camb) 2016; 52:1967-70. [DOI: 10.1039/c5cc09236a] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Azide-methylenecyclopropanes underwent an intermolecular cyclization with isonitriles catalyzed by a RhIIcomplex to produce a series of pyrrolo[2,3-b]quinolines in good yields. Moreover, synthetic applications to construct useful heterocycles have also been achieved.
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Affiliation(s)
- Kai Chen
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Xiang-Ying Tang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- State Key Laboratory of Organometallic Chemistry
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22
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Yu LZ, Hu XB, Xu Q, Shi M. Thermally induced formal [3+2] cyclization of ortho-aminoaryl-tethered alkylidenecyclopropanes: facile synthesis of furoquinoline and thienoquinoline derivatives. Chem Commun (Camb) 2016; 52:2701-4. [DOI: 10.1039/c5cc09218c] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Thermally induced formal [3+2] cycloaddition reactions of alkylidenecyclopropanes with the in situ generation of isocyanates and isothiocyanates have been developed.
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Affiliation(s)
- Liu-Zhu Yu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai
- China
| | - Xu-Bo Hu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai
- China
| | - Qin Xu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai
- China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai
- China
- State Key Laboratory of Organometallic Chemistry
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23
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Chen K, Zhu ZZ, Liu JX, Tang XY, Wei Y, Shi M. Substrate-controlled Rh(ii)-catalyzed single-electron-transfer (SET): divergent synthesis of fused indoles. Chem Commun (Camb) 2016; 52:350-3. [DOI: 10.1039/c5cc07292a] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Rh(ii)-catalyzed diversified ring expansions controlled by single-electron-transfer (SET) have been disclosed in this communication.
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Affiliation(s)
- Kai Chen
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Zi-Zhong Zhu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Jia-Xin Liu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
| | - Xiang-Ying Tang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- P. R. China
- State Key Laboratory of Organometallic Chemistry
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24
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Calvert MB, Sperry J. Bioinspired total synthesis and structural revision of yuremamine, an alkaloid from the entheogenic plant Mimosa tenuiflora. Chem Commun (Camb) 2015; 51:6202-5. [PMID: 25756921 DOI: 10.1039/c5cc00380f] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Guided by a biosynthetic hypothesis, a serendipitous total synthesis of yuremamine has resulted in its structural revision from the putative pyrroloindole (1) to the flavonoidal indole (2), which was initially proposed as a biosynthetic intermediate.
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Affiliation(s)
- Matthew B Calvert
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand.
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25
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Monakhova N, Ryabova S, Makarov V. Synthesis and Some Biological Properties of Pyrrolo[1,2-a]indoles. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2312] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Natalia Monakhova
- Bach Institute of Biochemistry; Russian Academy of Science; 119071 Moscow Russia
| | - Svetlana Ryabova
- Bach Institute of Biochemistry; Russian Academy of Science; 119071 Moscow Russia
| | - Vadim Makarov
- Bach Institute of Biochemistry; Russian Academy of Science; 119071 Moscow Russia
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26
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Gharpure SJ, Shelke YG, Kumar DP. Counter-Ion-Dependent Alkyne Iminium Ion Cyclization for Divergent Synthesis of N-Fused Indolylidine, Indole, and Indoline Derivatives Promoted by the Lewis/Bronsted Acid. Org Lett 2015; 17:1926-9. [DOI: 10.1021/acs.orglett.5b00615] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Yogesh G. Shelke
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Dasari Praveen Kumar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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27
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Li H, Wang Z, Zu L. [3 + 2] Annulations between indoles and α,β-unsaturated ketones: access to pyrrolo[1,2-a]indoles and model reactions toward the originally assigned structure of yuremamine. RSC Adv 2015. [DOI: 10.1039/c5ra11904a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The efficient assembly of densely substituted, highly functionalized pyrrolo[1,2-a]indoles by the direct annulation of indoles and α,β-unsaturated ketones is reported.
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Affiliation(s)
- Haokun Li
- Department of Pharmacology and Pharmaceutical Sciences
- School of Medicine
- Tsinghua University
- Beijing
- China
| | - Zhonglei Wang
- Department of Pharmacology and Pharmaceutical Sciences
- School of Medicine
- Tsinghua University
- Beijing
- China
| | - Liansuo Zu
- Department of Pharmacology and Pharmaceutical Sciences
- School of Medicine
- Tsinghua University
- Beijing
- China
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28
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Pan X, Wang H, Xia HG, Wu J. An unexpected three-component reaction of 2-alkylenecyclobutanone and N′-(2-alkynylbenzylidene)hydrazide with water. RSC Adv 2015. [DOI: 10.1039/c5ra17787a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A silver(i)-catalyzed three-component reaction of 2-alkylenecyclobutanone, N′-(2-alkynylbenzylidene)hydrazide with water gives rise to 3-(pyrazolo[5,1-a]isoquinolin-1-yl)propanoic acids in good yields through 6-endo cyclization, [3 + 2] cycloaddition, and rearrangement.
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Affiliation(s)
- Xiaolin Pan
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - He Wang
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
| | - Hong-Guang Xia
- Department of Cell Biology
- Harvard Medical School
- Boston
- USA
| | - Jie Wu
- Department of Chemistry
- Fudan University
- Shanghai 200433
- China
- State Key Laboratory of Organometallic Chemistry
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29
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Recent developments in the synthesis and reactivity of methylene- and alkylidenecyclopropane derivatives. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.04.057] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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30
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Brandi A, Cicchi S, Cordero FM, Goti A. Progress in the synthesis and transformations of alkylidenecyclopropanes and alkylidenecyclobutanes. Chem Rev 2014; 114:7317-420. [PMID: 24927495 DOI: 10.1021/cr400686j] [Citation(s) in RCA: 209] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Alberto Brandi
- Dipartimento di Chimica "Ugo Schiff", Università degli Studi di Firenze , Via della Lastruccia 13, I-50019-Sesto Fiorentino, Italy
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31
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Chen K, Zhu ZZ, Zhang YS, Tang XY, Shi M. Rhodium(II)-Catalyzed Intramolecular Cycloisomerizations of Methylenecyclopropanes withN-Sulfonyl 1,2,3-Triazoles. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402803] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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32
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Chen K, Zhu ZZ, Zhang YS, Tang XY, Shi M. Rhodium(II)-catalyzed intramolecular cycloisomerizations of methylenecyclopropanes with N-sulfonyl 1,2,3-triazoles. Angew Chem Int Ed Engl 2014; 53:6645-9. [PMID: 24839200 DOI: 10.1002/anie.201402803] [Citation(s) in RCA: 116] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 04/14/2014] [Indexed: 11/09/2022]
Abstract
A novel rhodium(II)-catalyzed tandem cycloisomerization of methylenecyclopropanes (MCPs) with N-sulfonyl 1,2,3-triazoles is disclosed. The reaction produces a series of highly functionalized polycyclic N heterocycles via a rhodium imino carbene intermediate. A distinct feature of this divergent synthesis is that different types of substrates control the reaction pathways. Moreover, several interesting transformations of these products to construct diazabicyclo[3.2.1]octane derivatives are also reported.
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Affiliation(s)
- Kai Chen
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science and Technology, Meilong Road No. 130, Shanghai, 200237 (China)
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33
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Pan X, Luo Y, Ding Y, Fan X, Wu J. Assembly of Indeno[1,2-c]chromenesviaa Palladium-Catalyzed Reaction of 1-Bromo-2-(cyclopropylidenemethyl)benzene with 2-Alkynylphenol. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201300942] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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34
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Chen GQ, Tang XY, Shi M. Silver(I)-Mediated Dual Cleavage of C-C and C-O Bonds in the Reaction of Diarylmethylenecyclopropanes with Tetrahydrofuran: Synthesis of 4-(3-Halobut-3-enyloxy)butyl 2,2,2-Trifluoroacetate Derivatives. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301262] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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35
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Cheng HG, Lu LQ, Wang T, Yang QQ, Liu XP, Li Y, Deng QH, Chen JR, Xiao WJ. Highly Enantioselective Friedel-Crafts Alkylation/N-Hemiacetalization Cascade Reaction with Indoles. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209998] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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36
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Cheng HG, Lu LQ, Wang T, Yang QQ, Liu XP, Li Y, Deng QH, Chen JR, Xiao WJ. Highly Enantioselective Friedel-Crafts Alkylation/N-Hemiacetalization Cascade Reaction with Indoles. Angew Chem Int Ed Engl 2013; 52:3250-4. [DOI: 10.1002/anie.201209998] [Citation(s) in RCA: 146] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Indexed: 11/05/2022]
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37
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Kern N, Hoffmann M, Blanc A, Weibel JM, Pale P. Gold(I)-catalyzed rearrangement of N-aryl 2-alkynylazetidines to pyrrolo[1,2-a]indoles. Org Lett 2013; 15:836-9. [PMID: 23350973 DOI: 10.1021/ol303518n] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Various N-aryl-2-alkynylazetidines were very efficiently converted to pyrrolo[1,2-a]indoles with gold catalysts, especially the 2-biphenyl-dicyclohexylphosphino-gold(I) hexafluoroantimonate, in dichloromethane at room temperature. Additionally, two formal syntheses of bioactive non-natural compounds, i.e. 7-methoxymitosene and an 5-HT(2C) receptor agonist, have been achieved.
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Affiliation(s)
- Nicolas Kern
- Laboratoire de Synthèse, Réactivité Organiques & Catalyse, associé au CNRS, Institut de Chimie, Université de Strasbourg, 4 rue Blaise Pascal, 67070 Strasbourg, France
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38
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Dethe DH, Boda R, Das S. Cu(OTf)2 catalysed [6+2] cycloaddition reaction for the synthesis of highly substituted pyrrolo[1,2-a]indoles: rapid construction of the yuremamine core. Chem Commun (Camb) 2013; 49:3260-2. [DOI: 10.1039/c3cc40617b] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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39
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Chen K, Sun R, Xu Q, Wei Y, Shi M. Thermal induced intramolecular [2 + 2] cycloaddition of allene-ACPs. Org Biomol Chem 2013; 11:3949-53. [DOI: 10.1039/c3ob40911b] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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