1
|
García-Padilla E, Maseras F, Echavarren AM. Gold(I)-Catalyzed 1,6-Enyne Single-Cleavage Rearrangements: The Complete Picture. ACS ORGANIC & INORGANIC AU 2023; 3:312-320. [PMID: 37810414 PMCID: PMC10557124 DOI: 10.1021/acsorginorgau.3c00028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 07/28/2023] [Accepted: 07/31/2023] [Indexed: 10/10/2023]
Abstract
We identify the factors that rule the selectivity in single-cleavage skeletal rearrangements promoted by gold(I) catalysts. We find that stereoconvergence is enabled by a rotational equilibrium when electron-rich substituents are used. The anomalous Z-selective skeletal rearrangement is found to be due to electronic factors, whereas endo-selectivity depends on both steric and electronic factors.
Collapse
Affiliation(s)
- Eduardo García-Padilla
- Institute
of Chemical Research of Catalonia (ICIQ-CERCA), The Barcelona Institute
of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament
de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo
s/n, 43007 Tarragona, Spain
| | - Feliu Maseras
- Institute
of Chemical Research of Catalonia (ICIQ-CERCA), The Barcelona Institute
of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament
de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo
s/n, 43007 Tarragona, Spain
| | - Antonio M. Echavarren
- Institute
of Chemical Research of Catalonia (ICIQ-CERCA), The Barcelona Institute
of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament
de Química Analítica i Química Orgànica, Universitat Rovira i Virgili, C/Marcel·lí Domingo
s/n, 43007 Tarragona, Spain
| |
Collapse
|
2
|
Li CL, Yang Y, Zhou Y, Duan ZC, Yu ZX. Strain-Release-Controlled [4 + 2 + 1] Reaction of Cyclopropyl-Capped Diene-ynes/Diene-enes and Carbon Monoxide Catalyzed by Rhodium. J Am Chem Soc 2023; 145:5496-5505. [PMID: 36812021 DOI: 10.1021/jacs.3c00134] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
Achieving transition-metal-catalyzed reactions of diene-ynes/diene-enes and carbon monoxide (CO) to deliver [4 + 2 + 1] cycloadducts, rather than the kinetically favored [2 + 2 + 1] products, is challenging. Here, we report that this can be solved by adding a cyclopropyl (CP) cap to the diene moiety of the original substrates. The resulting CP-capped diene-ynes/diene-enes can react with CO under Rh catalysis to give [4 + 2 + 1] cycloadducts exclusively without forming [2 + 2 + 1] products. This reaction has a broad scope and can be used to synthesize useful 5/7 bicycles with a CP moiety. Of the same importance, the CP moiety in the [4 + 2 + 1] cycloadducts can act as an intermediate group for further transformations so that other challenging bicyclic 5/7 and tricyclic 5/7/5, 5/7/6, and 5/7/7 skeletons, some of which are widely found in natural products, can be accessed. The mechanism of this [4 + 2 + 1] reaction has been investigated by quantum chemical calculations, and the role of the CP group in avoiding the possible side [2 + 2 + 1] reaction has been identified, showing that the [4 + 2 + 1] is controlled by releasing the ring strain in the methylenecyclopropyl (MCP) group (about 7 kcal/mol) in the CP-capped dienes.
Collapse
Affiliation(s)
- Chen-Long Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Yusheng Yang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Yi Zhou
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhao-Chen Duan
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| |
Collapse
|
3
|
Bharath Kumar P, Raju CE, Chandubhai PH, Sridhar B, Karunakar GV. Gold(I)-Catalyzed Regioselective Cyclization to Access Cyclopropane-Fused Tetrahydrobenzochromenes. Org Lett 2022; 24:6761-6766. [DOI: 10.1021/acs.orglett.2c02564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Perla Bharath Kumar
- Fluoro and Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Chittala Emmaniel Raju
- Fluoro and Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - Patel Hinal Chandubhai
- Fluoro and Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Balasubramanian Sridhar
- Center for X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
| | - Galla V. Karunakar
- Fluoro and Agrochemicals Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500007, India
- Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| |
Collapse
|
4
|
Tan YX, Li S, Song L, Zhang X, Wu YD, Sun J. Ruthenium-Catalyzed Geminal Hydroborative Cyclization of Enynes. Angew Chem Int Ed Engl 2022; 61:e202204319. [PMID: 35596681 DOI: 10.1002/anie.202204319] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Indexed: 12/25/2022]
Abstract
Disclosed here is the first geminal (gem-) hydroborative cyclization of enynes. Different from known hydroborative cyclizations, this process adds hydrogen and boron to the same position, leading to a new reaction mode. With [Cp*RuCl]4 as catalyst, a range of gem-hydroborated bicyclic products bearing a cyclopropane unit could be rapidly assembled from simple enyne substrates. Control experiments and density functional theory (DFT) calculations provided important insights into the reaction mechanism. Notably, two major competing pathways may operate with substrate-dependence. 1,6-Enynes favor initial oxidative cyclometalation to form a ruthenacyclopentene intermediate prior to engaging hydroborane, while other enynes (e.g., 1,7-enynes) that lack strong propensity toward cyclization prefer initial alkyne gem-(H,B)-addition to form an α-boryl ruthenium carbene followed by intramolecular olefin cyclopropanation. This process also represents the first ruthenium-catalyzed enyne hydroborative cyclization.
Collapse
Affiliation(s)
- Yun-Xuan Tan
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Shijia Li
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China.,Shenzhen Bay Laboratory, Shenzhen, 518055, China
| | - Lijuan Song
- School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, China
| | - Xinhao Zhang
- Shenzhen Bay Laboratory, Shenzhen, 518055, China.,Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Yun-Dong Wu
- Shenzhen Bay Laboratory, Shenzhen, 518055, China.,Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, China
| | - Jianwei Sun
- Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| |
Collapse
|
5
|
Tan YX, Li S, Song L, Zhang X, Wu YD, Sun J. Ruthenium‐Catalyzed Geminal Hydroborative Cyclization of Enynes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yun-Xuan Tan
- Hong Kong University of Science and Technology School of Science Department of Chemistry HONG KONG
| | - Shijia Li
- Hong Kong University of Science and Technology School of Science Department of Chemistry HONG KONG
| | - Lijuan Song
- Harbin Institute of Technology Shenzhen School of Science CHINA
| | - Xinhao Zhang
- Peking University Shenzhen Graduate School Lab of Computational Chemistry and Drug Design CHINA
| | - Yun-Dong Wu
- Peking University Shenzhen Graduate School Lab of Computational Chemistry and Drug Design CHINA
| | - Jianwei Sun
- Hong Kong University of Science and Technology Department of Chemistry Clear Water Bay Hong Kong HONG KONG
| |
Collapse
|
6
|
Nguyen T, Daiann Sosa Carrizo E, Cattey H, Fleurat‐Lessard P, Roger J, Hierso J. Tetranuclear Dicationic Aurophilic Gold(I) Catalysts in Enyne Cycloisomerization: Cooperativity for a Dramatic Shift in Selectivity. Chemistry 2022; 28:e202200769. [DOI: 10.1002/chem.202200769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Tuan‐Anh Nguyen
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
| | - E. Daiann Sosa Carrizo
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
| | - Hélène Cattey
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
| | - Paul Fleurat‐Lessard
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
| | - Julien Roger
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
| | - Jean‐Cyrille Hierso
- Université de Bourgogne, Institut de Chimie Moléculaire de l'Université de Bourgogne, UMR-CNRS 6302- Université Bourgogne-Franche- Comté (UBFC) 9, avenue Alain Savary 21078 Dijon France
| |
Collapse
|
7
|
Loreto D, Esposito A, Demitri N, Guaragna A, Merlino A. Digging into protein metalation differences triggered by fluorine containing-dirhodium tetracarboxylate analogues. Dalton Trans 2022; 51:7294-7304. [DOI: 10.1039/d2dt00873d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic and biological properties of dirhodium tetracarboxylates ([Rh2(μ-O2CR)4L2], L=axial ligand, R=CH3-, CH3CH2-, etc) largely depend on the nature of the bridging carboxylate equatorial μ-O2CR ligands, which can be easily exchanged...
Collapse
|
8
|
Affiliation(s)
- Radim Hrdina
- Institute of Organic Chemistry Justus-Liebig University Giessen Heinrich-Buff-Ring 17 35392 Giessen Germany
| |
Collapse
|
9
|
Zeng L, Lin Y, Li J, Sajiki H, Xie H, Cui S. Skeletal reorganization divergence of N-sulfonyl ynamides. Nat Commun 2020; 11:5639. [PMID: 33159079 PMCID: PMC7648764 DOI: 10.1038/s41467-020-19467-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2020] [Accepted: 10/07/2020] [Indexed: 01/29/2023] Open
Abstract
Skeletal reorganization is a type of intriguing processes because of their interesting mechanism, high atom-economy and synthetic versatility. Herein, we describe an unusual, divergent skeletal reorganization of N-sulfonyl ynamides. Upon treatment with lithium diisopropylamine (LDA), N-sulfonyl ynamides undergo a skeletal reorganization to deliver thiete sulfones, while the additional use of 1,3-dimethyl-tetrahydropyrimidin-2(1H)-one (DMPU) shifts the process to furnish propargyl sulfonamides. This skeletal reorganization divergence features broad substrate scope and scalability. Mechanistically, experimental and computational studies reveal that these processes may initiate from a lithiation/4-exo-dig cyclization cascade, and the following ligand-dependent 1,3-sulfonyl migration or β-elimination would control the chemodivergence. This protocol additionally provides a facile access to a variety of privileged molecules from easily accessible ynamides. Skeletal reorganizations are intriguing processes in chemical synthesis due to their mechanism, atom-economy and synthetic versatility. Herein, the authors describe a divergent skeletal reorganization of N-sulfonyl ynamides to thiete sulfones and propargyl sulfonamides.
Collapse
Affiliation(s)
- Linwei Zeng
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, 310058, Hangzhou, China
| | - Yuxin Lin
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, 310058, Hangzhou, China
| | - Jiaming Li
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, 310058, Hangzhou, China
| | - Hironao Sajiki
- Laboratory of Organic Chemistry, Gifu Pharmaceutical University, Gifu, 501-1196, Japan
| | - Hujun Xie
- School of Food Science and Biotechnology, Zhejiang Gongshang University, 310018, Hangzhou, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, 866 Yuhangtang Road, 310058, Hangzhou, China.
| |
Collapse
|
10
|
Synergy of activating substrate and introducing C-H···O interaction to achieve Rh2(II)-catalyzed asymmetric cycloisomerization of 1,n-enynes. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9794-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
|
11
|
Wang G, Huang H, Guo W, Qian C, Sun J. Unusual Skeletal Reorganization of Oxetanes for the Synthesis of 1,2-Dihydroquinolines. Angew Chem Int Ed Engl 2020; 59:11245-11249. [PMID: 32219976 DOI: 10.1002/anie.201916727] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 03/08/2020] [Indexed: 01/29/2023]
Abstract
Skeletal reorganization is a type of fascinating transformations owing to their intriguing mechanisms and utility in complex molecule synthesis. However, only a limited amount of examples are known for most functional groups. Herein, we describe such an unusual process of oxetanes. In the presence of In(OTf)3 as catalyst, oxetane-tethered anilines reacted unexpectedly to form 1,2-dihydroquinolines. This process not only provides expedient access to dihydroquinolines, but also represents a new reaction of oxetane. Mechanistically, it is believed that the reaction proceeds through initial nitrogen attack rather than arene attack followed by a series of bond cleavage and formation events. Control experiments provided important insights into the mechanism.
Collapse
Affiliation(s)
- Guannan Wang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China
| | - Wengang Guo
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Chenxiao Qian
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, Changzhou, 213164, China.,Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| |
Collapse
|
12
|
Wang G, Huang H, Guo W, Qian C, Sun J. Unusual Skeletal Reorganization of Oxetanes for the Synthesis of 1,2‐Dihydroquinolines. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201916727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Guannan Wang
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Hai Huang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
| | - Wengang Guo
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Chenxiao Qian
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| | - Jianwei Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology School of Petrochemical Engineering Changzhou University Changzhou 213164 China
- Department of Chemistry The Hong Kong University of Science and Technology Clear Water Bay Kowloon, Hong Kong SAR China
| |
Collapse
|
13
|
Zhao S, Zang ZL, Li S, Wen X, Wang C, Guo J, He Y. Iridium-Catalyzed Cycloisomerization of N-Tethered 1,7-Enynes: Construction of an Azabicyclo[5.1.0]octene System. J Org Chem 2020; 85:9321-9330. [PMID: 32551602 DOI: 10.1021/acs.joc.0c00516] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient method for the synthesis of azabicyclo[5.1.0]octenes through cycloisomerization of nitrogen-tethered 1,7-enynes catalyzed by [IrCp*Cl2]2 was developed. With appropriately designed substrates, this method could be easily employed to generate complex fused ring systems such as [6-6-3-7], [5-6-3-7], [7-6-3-7], and [8-6-3-7] ring systems, which enriches the diversity of the cyclopropane-fused polycycle library, and has potential applications in SAR studies of pharmaceutically interesting compounds and total synthesis of natural products.
Collapse
Affiliation(s)
- Sheng Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Zhong-Lin Zang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry, Ministry of Education, Institute of Bioorganic & Medicinal Chemistry, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P.R. China
| | - Siyu Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Xumei Wen
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Chenhui Wang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Jian Guo
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P.R. China
| |
Collapse
|
14
|
Sato D, Watanabe Y, Noguchi K, Kanazawa J, Miyamoto K, Uchiyama M, Saito A. BF 3-Catalyzed Skeletal Rearrangement of 7-En-2-ynones to endo-Type Cyclic Dienes. Org Lett 2020; 22:4063-4067. [PMID: 32255350 DOI: 10.1021/acs.orglett.0c00949] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Transition-metal-catalyzed cycloisomerization reactions with skeletal rearrangement of 1,n-enynes to afford cyclic dienes (particularly exo-cyclization products) have been well studied. However, there are few reports on the nonmetal-catalyzed skeletal rearrangement of enynes and skeletal rearrangement of electron-deficient enynes such as n-en-2-ynones. Here, we describe BF3·MeCN-catalyzed synthesis of 3-alkylidenecyclohexenes from 7-en-2-ynones, representing the first nonmetal-catalyzed skeletal rearrangement of 1,6-enynes to endo-type cyclic dienes.
Collapse
Affiliation(s)
- Daisuke Sato
- Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Yuichiro Watanabe
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Keiichi Noguchi
- Instrumentation Analysis Center, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| | - Junichiro Kanazawa
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazunori Miyamoto
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,Cluster for Pioneering Research (CPR), RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Akio Saito
- Division of Applied Chemistry, Institute of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Naka-cho, Koganei, Tokyo 184-8588, Japan
| |
Collapse
|
15
|
Sánchez‐Rodríguez EP, Cortés‐Mendoza S, Daran J, Ortega‐Alfaro MC, López‐Cortés JG, Gouygou M. Gold(I) complexes bearing P‐pyrrole phosphine ligands: Synthesis and catalytic activity towards cycloisomerization of 1,6‐enynes. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5709] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Elvia P. Sánchez‐Rodríguez
- Instituto de Química Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria Coyoacán CdMx C.P. 04510 Mexico
| | - Salvador Cortés‐Mendoza
- Instituto de Química Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria Coyoacán CdMx C.P. 04510 Mexico
| | - Jean‐Claude Daran
- CNRS, LCC (Laboratoire de Chimie de Coordination) Université de Toulouse, UPS 205, route de Narbonne Toulouse 31077 France
| | - M. Carmen Ortega‐Alfaro
- Instituto de Ciencias Nucleares Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria Coyoacán CdMx C.P. 04510 Mexico
| | - José G. López‐Cortés
- Instituto de Química Universidad Nacional Autónoma de México, Circuito Exterior, Ciudad Universitaria Coyoacán CdMx C.P. 04510 Mexico
| | - Maryse Gouygou
- CNRS, LCC (Laboratoire de Chimie de Coordination) Université de Toulouse, UPS 205, route de Narbonne Toulouse 31077 France
| |
Collapse
|
16
|
|
17
|
Liu R, Yang D, Chang F, Giordano L, Liu G, Tenaglia A. An Electrophilic Ruthenium Complex that Enables the Cycloisomerization of 1,6‐Enynes to Access Azabicyclo[4.1.0]heptenes. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900529] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Rui Liu
- Key Laboratory of Resource Chemistry of Ministry of Education; Key Laboratory of Rare Earth Functional MaterialsShanghai Normal University No. 100 Guilin Road Shanghai 200234 P. R. China
| | - Dongfeng Yang
- Key Laboratory of Resource Chemistry of Ministry of Education; Key Laboratory of Rare Earth Functional MaterialsShanghai Normal University No. 100 Guilin Road Shanghai 200234 P. R. China
| | - Fengwei Chang
- Key Laboratory of Resource Chemistry of Ministry of Education; Key Laboratory of Rare Earth Functional MaterialsShanghai Normal University No. 100 Guilin Road Shanghai 200234 P. R. China
| | - Laurent Giordano
- Aix Marseille UniversitéCNRS Cent Marseille, iSm2 Marseille 13013 France
| | - Guohua Liu
- Key Laboratory of Resource Chemistry of Ministry of Education; Key Laboratory of Rare Earth Functional MaterialsShanghai Normal University No. 100 Guilin Road Shanghai 200234 P. R. China
| | - Alphonse Tenaglia
- Aix Marseille UniversitéCNRS Cent Marseille, iSm2 Marseille 13013 France
| |
Collapse
|
18
|
Borketey JB, Opoku E, Tia R, Adei E. The mechanisms of gallium-catalysed skeletal rearrangement of 1,6-enynes - Insights from quantum mechanical computations. J Mol Graph Model 2019; 94:107476. [PMID: 31627116 DOI: 10.1016/j.jmgm.2019.107476] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2019] [Revised: 10/04/2019] [Accepted: 10/07/2019] [Indexed: 10/25/2022]
Abstract
The transition metal-catalysed skeletal reorganization of 1,6-enynes can lead to three types of products - a type I product occurring via the cleavage of the alkene C-C bonds and the migration of the terminal alkene carbon to the terminus of the alkyne; a type II product arising from cleavage of both the double and the triple bonds followed by insertion of the terminal alkene carbon into the alkyne C-C triple bond; and a type III product which is obtained when there is a cleavage of the olefinic bond followed by formation of two new bonds from each carbon to each of the acetylenic carbons. The course of these reactions is highly dependent on the metal catalyst used and type of substitution at the alkene and alkyne moieties of the enyne. In this mechanistic study of the re-organization of 1,6-enynes catalysed by GaCl3, performed at the DFT M06/6-311G(d,p) level of theory, the parent reaction selectively leads to the formation of the type I product through the formation of the open cyclopropane ring. The presence of substituents at the acetylenic moiety governs the preferred position of the metal along the alkyne bond within the pi-complex: with electron-withdrawing groups (EWGs), the metal prefers the terminal carbon while electron-donating groups (EDGs) lead to the metal preferring the internal carbon. EWGs at the alkyne moiety efficiently favour the formation of the type I product. Substituents at the olefin moiety alter the mechanism of the reaction which may favour the selective formation of the type I or III product depending on the type of substituent. EWGs at the olefinic moiety favour formation of the type III product when the alkyne moiety is unsubstituted whiles EDGs forms the type I product selectively. Solvent and temperature have no substantial effects on the energetic trends and product distribution. Hence, gas-phase calculations are deemed adequate for the problem at hand.
Collapse
Affiliation(s)
- Joseph Bortey Borketey
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Ernest Opoku
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Richard Tia
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Evans Adei
- Theoretical and Computational Chemistry Laboratory, Department of Chemistry, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| |
Collapse
|
19
|
Chi X, Meng L, Sun X, Liu Q, Ai B, Chen L, Zhang D, Zhao P, Dong Y, Liu H. Palladium‐Catalyzed Cycloisomerization of (
Z
)‐1‐Iodo‐1,6‐dienes to 3‐Aza‐bicyclo[4.1.0]hept‐2‐enes. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900079] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaochen Chi
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Long Meng
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Xi Sun
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Qing Liu
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Bing Ai
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Lei Chen
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Daopeng Zhang
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Pingping Zhao
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
- College of chemical and environmental engineeringShandong university of science and technology 579 Qianwangang Road Qingdao 266590 P. R. China
| | - Yunhui Dong
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| | - Hui Liu
- School of Chemistry and Chemical EngineeringShandong University of Technology 266 West Xincun Road Zibo 255049 P. R. China
| |
Collapse
|
20
|
Berndt JP, Radchenko Y, Becker J, Logemann C, Bhandari DR, Hrdina R, Schreiner PR. Site-selective nitrenoid insertions utilizing postfunctionalized bifunctional rhodium(ii) catalysts. Chem Sci 2019; 10:3324-3329. [PMID: 30996919 PMCID: PMC6429793 DOI: 10.1039/c8sc05733h] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 02/05/2019] [Indexed: 12/30/2022] Open
Abstract
We report a new strategy for the preparation of dirhodium(ii) complexes with the general formula Rh2(A)4 that allows the isolation of a dirhodium tetracarboxylate complex with a free amino group available for postfunctionalization. The postfunctionalization of this complex enables the incorporation of a variety of functional groups, including double and triple bonds as well as nucleophilic moieties, thus paving the way to new classes of polymeric as well as bifunctional catalysts, and polymetallic complexes. Furthermore, we demonstrate that a urea containing dirhodium(ii) complex enables site-selective nitrenoid insertions by remote hydrogen bonding control.
Collapse
Affiliation(s)
- Jan-Philipp Berndt
- Justus Liebig University , Institute of Organic Chemistry , Heinrich-Buff-Ring 17 , 35392 Giessen , Germany . ;
| | - Yevhenii Radchenko
- Justus Liebig University , Institute of Organic Chemistry , Heinrich-Buff-Ring 17 , 35392 Giessen , Germany . ;
| | - Jonathan Becker
- Institute of Inorganic and Analytical Chemistry , Heinrich-Buff-Ring 17 , 35392 Giessen , Germany
| | - Christian Logemann
- Institute of Inorganic and Analytical Chemistry , Heinrich-Buff-Ring 17 , 35392 Giessen , Germany
| | - Dhaka R Bhandari
- Institute of Inorganic and Analytical Chemistry , Heinrich-Buff-Ring 17 , 35392 Giessen , Germany
| | - Radim Hrdina
- Justus Liebig University , Institute of Organic Chemistry , Heinrich-Buff-Ring 17 , 35392 Giessen , Germany . ;
| | - Peter R Schreiner
- Justus Liebig University , Institute of Organic Chemistry , Heinrich-Buff-Ring 17 , 35392 Giessen , Germany . ;
| |
Collapse
|
21
|
Alyabyev SB, Beletskaya IP. Gold as a catalyst. Part II. Alkynes in the reactions of carbon–carbon bond formation. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4815] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
22
|
Gold(I)-Catalysis for the Synthesis of Terpenoids: From Intramolecular Cascades to Intermolecular Cycloadditions. Isr J Chem 2018. [DOI: 10.1002/ijch.201800006] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
23
|
Zhuang Z, Li CL, Xiang Y, Wang YH, Yu ZX. An enyne cycloisomerization/[5+1] reaction sequence to synthesize tetrahydroisoquinolinones from enyne-enes and CO. Chem Commun (Camb) 2018; 53:2158-2161. [PMID: 28139785 DOI: 10.1039/c6cc09925d] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An enyne cycloisomerization/[5+1] reaction sequence was developed to synthesize tetrahydroisoquinolinones from linear enyne-enes and CO. The first step is a gold(i)-catalyzed enyne cycloisomerization, generating six-membered-ring-fused vinylcyclopropanes. The second step is a rhodium(i)-catalyzed [5+1] reaction of vinylcyclopropanes with CO. This two-step reaction could also be carried out in one-pot without isolating the cycloisomerization product generated from the first step of this sequence.
Collapse
Affiliation(s)
- Zhe Zhuang
- Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing, 100871, China.
| | - Chen-Long Li
- Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing, 100871, China.
| | - Yu Xiang
- Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing, 100871, China.
| | - Yu-Hao Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing, 100871, China.
| | - Zhi-Xiang Yu
- Beijing National Laboratory of Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering, College of Chemistry, Peking University, Beijing, 100871, China.
| |
Collapse
|
24
|
Feng YJ, Chen YH, Huang SL, Liu YH, Lin YC. Cyclization Reactions of Aryl Propargyl Acetates with Tethered Epoxide Induced by Ruthenium Complex. Chem Asian J 2017; 12:3027-3038. [PMID: 28980768 DOI: 10.1002/asia.201701070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/14/2017] [Indexed: 01/05/2023]
Abstract
Reactions of the ruthenium complex [Ru]Cl ([Ru]=Cp(PPh3 )2 Ru; Cp=η5 -C5 H5 ) with several aryl propargyl acetates, each with an ortho-substituted chain of various length containing an epoxide on the aromatic ring and with or without methyl substitutents on the epoxide ring, bring about novel cyclizations. The cyclization reactions of HC≡CCH(OAc)(C6 H4 )CH2 (RC2 H2 O) (R=H, 6 a; R=CH3 , 6 b, where RC2 H2 O is an epoxide ring) in MeOH give the vinylidene complexes 5 a-b, respectively, each with the Cβ integrated into a tetrahydro-5H-benzo[7]annulen-6-ol ring. A C-C bond formation takes place between the propargyl acetate and the less substituted carbon of the epoxide ring. Further cyclizations of 5 a-b induced by HBF4 give the corresponding vinylidene complexes 8 a-b each with a new 8-oxabicyclo-[3.2.1]octane ring by removal of a methanol molecule in high yield. For similar aryl propargyl acetates with a shorter epoxide chain, the cyclization gives a mixture of a vinylidene complex with a tetrahydronaphthalen-1-ol ring and a carbene complex with a tricyclic indeno-furan ring. For the cyclization of 18, with a longer epoxide chain, opening of the epoxide is required to afford the vicinal bromohydrin 22, then tandem cyclization occurs in one pot. Products are characterized by spectroscopic methods as well as by XRD analysis.
Collapse
Affiliation(s)
- Yi-Jhen Feng
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan), Fax: (+886) 223636359
| | - Yi-Hsin Chen
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan), Fax: (+886) 223636359
| | - Shou-Ling Huang
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan), Fax: (+886) 223636359
| | - Yi-Hung Liu
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan), Fax: (+886) 223636359
| | - Ying-Chih Lin
- Department of Chemistry, National Taiwan University, Taipei, 106, Taiwan), Fax: (+886) 223636359
| |
Collapse
|
25
|
Li J, Zhang WW, Wei XJ, Liu F, Hao WJ, Wang SL, Li G, Tu SJ, Jiang B. Radical Deaminative ipso-Cyclization of 4-Methoxyanilines with 1,7-Enynes for Accessing Spirocyclohexadienone-Containing Cyclopenta[c]quinolin-4-ones. J Org Chem 2017; 82:6621-6628. [DOI: 10.1021/acs.joc.7b00704] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Jie Li
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Wen-Wen Zhang
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Xiao-Jing Wei
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Feng Liu
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Wen-Juan Hao
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Shu-Liang Wang
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Guigen Li
- Institute of Chemistry & BioMedical Sciences, Nanjing University, Nanjing 210093, P. R. China
- Department
of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Shu-Jiang Tu
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| | - Bo Jiang
- School
of Chemistry and Materials Science, Jiangsu Key Laboratory of Green
Synthetic Chemistry for Functional Materials, Jiangsu Normal University, Xuzhou 221116, P. R. China
| |
Collapse
|
26
|
Jiang B, Li J, Pan Y, Hao W, Li G, Tu S. Radical-Enabled Bicyclization Cascades of Oxygen-Tethered 1,7-Enynes Leading to Skeletally Diverse Polycyclic Chromen-2-ones. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600571] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Bo Jiang
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Jie Li
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Yuanyuan Pan
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Wenjuan Hao
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| | - Guigen Li
- Department of Chemistry and Biochemistry; Texas Tech University; Lubbock Texas 79409-1061 United States
- Institute of Chemistry & BioMedical Sciences, Collaborative Innovation Center of Chemistry for Life Sciences, Nanjing University; Nanjing Jiangsu 210093 China
| | - Shujiang Tu
- School of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials; Jiangsu Normal University; Xuzhou Jiangsu 221116 China
| |
Collapse
|
27
|
Kim N, Brooner REM, Widenhoefer RA. Unexpected Skeletal Rearrangement in the Gold(I)/Silver(I)-Catalyzed Conversion of 7-Aryl-1,6-enynes to Bicyclo[3.2.0]hept-6-enes via Hidden Brønsted Acid Catalysis. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00868] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nana Kim
- Department of Chemistry,
French Family Science Center, Duke University, Durham, North Carolina 27708, United States
| | - Rachel E. M. Brooner
- Department of Chemistry,
French Family Science Center, Duke University, Durham, North Carolina 27708, United States
| | - Ross A. Widenhoefer
- Department of Chemistry,
French Family Science Center, Duke University, Durham, North Carolina 27708, United States
| |
Collapse
|
28
|
Lu Y, Yuan H, Zhou S, Luo T. Total Syntheses of (-)-Hibiscone C and Lysergine: A Cyclization/Fragmentation Strategy. Org Lett 2017; 19:620-623. [PMID: 28107016 DOI: 10.1021/acs.orglett.6b03778] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first asymmetric total synthesis of (-)-hibiscone C and a concise synthesis of ergot alkaloid lysergine are described. Both syntheses were achieved using the radical cyclization/fragmentation strategy. This cascade reaction enabled the application of the strained bicycle as a synthon for the synthesis of highly substituted decalins in an efficient and stereoselective manner.
Collapse
Affiliation(s)
- Yandong Lu
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, and ‡Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, China
| | - Haosen Yuan
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, and ‡Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, China
| | - Shijie Zhou
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, and ‡Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, China
| | - Tuoping Luo
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education, Beijing National Laboratory for Molecular Science, College of Chemistry and Molecular Engineering, and ‡Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Peking University , Beijing 100871, China
| |
Collapse
|
29
|
Li J, Hao WJ, Zhou P, Zhu YL, Wang SL, Tu SJ, Jiang B. Oxidative bicyclization of N-tethered 1,7-enynes toward polycyclic 3,4-dihydroquinolin-2(1H)-ones via site-selective decarboxylative C(sp3)–H functionalization. RSC Adv 2017. [DOI: 10.1039/c6ra28589a] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new Ag-catalyzed oxidative bicyclization of N-tethered 1,7-enynes with alkylcarboxylic acids for forming 41 examples of polycyclic 3,4-dihydroquinolin-2(1H)-ones has been established using readily accessible K2S2O8 as an oxidant.
Collapse
Affiliation(s)
- Jie Li
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Wen-Juan Hao
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Peng Zhou
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Yi-Long Zhu
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Shu-Liang Wang
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Shu-Jiang Tu
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Bo Jiang
- School of Chemistry and Chemical Engineering
- Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| |
Collapse
|
30
|
Melikyan GG, Davis R, Cappuccino S. Acquiring and Exploiting Persistency of Propargyl Radicals: Novel Paradigms. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00435] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gagik G. Melikyan
- Department of Chemistry and Biochemistry, California State University Northridge, Northridge, California 91330-8262, United States
| | - Ryan Davis
- Department of Chemistry and Biochemistry, California State University Northridge, Northridge, California 91330-8262, United States
| | - Samantha Cappuccino
- Department of Chemistry and Biochemistry, California State University Northridge, Northridge, California 91330-8262, United States
| |
Collapse
|
31
|
Tzouma E, Mavridis I, Vidali VP, Pitsinos EN. Diels–Alder reaction between 1,3,3-trisubstituted-2-vinylcyclohexenes and quinones under exceptionally mild conditions: a concise entry to the cassane-type furanoditerpenoid skeleton. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.06.133] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
32
|
Chen GQ, Fang W, Wei Y, Tang XY, Shi M. Divergent reaction pathways in gold-catalyzed cycloisomerization of 1,5-enynes containing a cyclopropane ring: dramatic ortho substituent and temperature effects. Chem Sci 2016; 7:4318-4328. [PMID: 30155078 PMCID: PMC6013813 DOI: 10.1039/c6sc00058d] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 03/03/2016] [Indexed: 12/23/2022] Open
Abstract
A gold(i)-catalyzed cycloisomerization of easily available 1,5-enynes containing a cyclopropane ring has been developed, efficiently providing cyclobutane-fused 1,4-cyclohexadiene, tricyclic cyclobutene, biscyclopropane and 1,3-cyclohexadiene derivatives in moderate to excellent yields. When the phenyl group was not ortho substituted, 1,4-cyclohexadienes could be produced. With an ortho substituent, three different products could be selectively synthesized by control of the temperature and the used gold(i) catalyst. The 1,5-enyne substrate first undergoes a classical enyne cycloisomerization to form a tricyclic cyclobutene key intermediate, which undergoes subsequent transformation to produce the desired products. A plausible reaction mechanism was proposed according to deuterium labeling experiments and intermediate trapping experiments, as well as DFT calculations. In our current reaction, the ortho substituent on the phenyl group controls the reaction outcome and the ortho substituent effect was found to originate from steric and electronic factors.
Collapse
Affiliation(s)
- Gen-Qiang Chen
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , P. R. China . ; ;
| | - Wei Fang
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , 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
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , P. R. China . ; ;
| |
Collapse
|
33
|
Park JE, Kang YK. A DFT Study on the Reaction Mechanism of the Pd(II)-catalyzed Cycloisomerization of 4-Aza-1-cyclopropyl-1,6-enyne: A Solvent Effect. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10799] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ji Eun Park
- Department of Chemistry; Sangmyung University; Seoul 110-743 Korea
| | - Youn Kyung Kang
- Department of Chemistry; Sangmyung University; Seoul 110-743 Korea
| |
Collapse
|
34
|
Xiao YC, Moberg C. Silaborative Carbocyclizations of 1,7-Enynes. Diastereoselective Preparation of Chromane Derivatives. Org Lett 2016; 18:308-11. [DOI: 10.1021/acs.orglett.5b03479] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- You-Cai Xiao
- KTH Royal Institute of Technology, Department of Chemistry, Organic Chemistry, SE 10044 Stockholm, Sweden
| | - Christina Moberg
- KTH Royal Institute of Technology, Department of Chemistry, Organic Chemistry, SE 10044 Stockholm, Sweden
| |
Collapse
|
35
|
Dieckmann M, Jang YS, Cramer N. Chiral Cyclopentadienyl Iridium(III) Complexes Promote Enantioselective Cycloisomerizations Giving Fused Cyclopropanes. Angew Chem Int Ed Engl 2015; 54:12149-52. [DOI: 10.1002/anie.201506483] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Indexed: 11/12/2022]
|
36
|
Dieckmann M, Jang YS, Cramer N. Chiral Cyclopentadienyl Iridium(III) Complexes Promote Enantioselective Cycloisomerizations Giving Fused Cyclopropanes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506483] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
37
|
Dorel R, Echavarren AM. Gold-Catalyzed Reactions via Cyclopropyl Gold Carbene-like Intermediates. J Org Chem 2015; 80:7321-32. [PMID: 26061916 PMCID: PMC4531321 DOI: 10.1021/acs.joc.5b01106] [Citation(s) in RCA: 90] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Indexed: 12/31/2022]
Abstract
Cycloisomerizations of 1,n-enynes catalyzed by gold(I) proceed via electrophilic species with a highly distorted cyclopropyl gold(I) carbene-like structure, which can react with different nucleophiles to form a wide variety of products by attack at the cyclopropane or the carbene carbons. Particularly important are reactions in which the gold(I) carbene reacts with alkenes to form cyclopropanes either intra- or intermolecularly. In the absence of nucleophiles, 1,n-enynes lead to a variety of cycloisomerized products including those resulting from skeletal rearrangements. Reactions proceeding through cyclopropyl gold(I) carbene-like intermediates are ideally suited for the bioinspired synthesis of terpenoid natural products by the selective activation of the alkyne in highly functionalized enynes or polyenynes.
Collapse
Affiliation(s)
- Ruth Dorel
- Institute of Chemical Research
of Catalonia (ICIQ), Av Països Catalans 16, 43007 Tarragona, Spain
| | - Antonio M. Echavarren
- Institute of Chemical Research
of Catalonia (ICIQ), Av Països Catalans 16, 43007 Tarragona, Spain
- Departament de Química Analítica i Química Orgánica, Universitat Rovira i Virgili, C/Marcel·lí Domingo s/n, 43007 Tarragona, Spain
| |
Collapse
|
38
|
Richmond E, Moran J. Ligand Control of E/Z Selectivity in Nickel-Catalyzed Transfer Hydrogenative Alkyne Semireduction. J Org Chem 2015; 80:6922-9. [DOI: 10.1021/acs.joc.5b01047] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Edward Richmond
- ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000 Strasbourg, France
| | - Joseph Moran
- ISIS & icFRC, Université de Strasbourg & CNRS, 8 allée Gaspard Monge, 67000 Strasbourg, France
| |
Collapse
|
39
|
Lei ZQ, Pan F, Li H, Li Y, Zhang XS, Chen K, Wang X, Li YX, Sun J, Shi ZJ. Group Exchange between Ketones and Carboxylic Acids through Directing Group Assisted Rh-Catalyzed Reorganization of Carbon Skeletons. J Am Chem Soc 2015; 137:5012-20. [DOI: 10.1021/ja512003d] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Zhi-Quan Lei
- Chengdu
Institute of Biology, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of the Ministry
of Education, College of Chemistry and Green Chemistry Center, Peking University, Beijing 100871, China
| | - Fei Pan
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of the Ministry
of Education, College of Chemistry and Green Chemistry Center, Peking University, Beijing 100871, China
| | - Hu Li
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of the Ministry
of Education, College of Chemistry and Green Chemistry Center, Peking University, Beijing 100871, China
| | - Yang Li
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of the Ministry
of Education, College of Chemistry and Green Chemistry Center, Peking University, Beijing 100871, China
| | - Xi-Sha Zhang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of the Ministry
of Education, College of Chemistry and Green Chemistry Center, Peking University, Beijing 100871, China
| | - Kang Chen
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of the Ministry
of Education, College of Chemistry and Green Chemistry Center, Peking University, Beijing 100871, China
| | - Xin Wang
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of the Ministry
of Education, College of Chemistry and Green Chemistry Center, Peking University, Beijing 100871, China
| | - Yu-Xue Li
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| | - Jian Sun
- Chengdu
Institute of Biology, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China
| | - Zhang-Jie Shi
- Beijing
National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory
of Bioorganic Chemistry and Molecular Engineering of the Ministry
of Education, College of Chemistry and Green Chemistry Center, Peking University, Beijing 100871, China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
| |
Collapse
|
40
|
Robertson BD, Brooner REM, Widenhoefer RA. Tandem Gold/Silver-Catalyzed Cycloaddition/Hydroarylation of 7-Aryl-1,6-enynes to Form 6,6-Diarylbicyclo[3.2.0]heptanes. Chemistry 2015; 21:5714-7. [DOI: 10.1002/chem.201500371] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Indexed: 02/05/2023]
|
41
|
Barreiro EM, Boltukhina EV, White AJP, Hii KK(M. Atropisomeric [(diphosphine)Au2 Cl2 ] complexes and their catalytic activity towards asymmetric cycloisomerisation of 1,6-enynes. Chemistry 2015; 21:2686-90. [PMID: 25504519 PMCID: PMC4524423 DOI: 10.1002/chem.201404496] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Indexed: 11/22/2022]
Abstract
X-ray crystal structures of two [(diphosphine)Au2 Cl2 ] complexes (in which diphosphine=P-Phos and xylyl-P-Phos; P-Phos=[2,2',6,6'-Tetramethoxy-4,4'-bis(diphenylphosphino)-3,3'-bipyridine]) were determined and compared to the reported structures of similar atropisomeric gold complexes. Correlations between the Au⋅⋅⋅Au distances and torsional angles for the biaryl series of ligands (MeOBIPHEP, SEGPhos, and P-Phos; BIPHEP=2,2'-bis(diphenylphosphino)-1,1'-biphenyl, SEGPhos=[(4,4'-bi-1,3-benzodioxole)-5,5'-diyl]bis[diphenylphosphine]) can be made; these measurements appear to be very dependent upon the phosphorous substituent. Conversely, the same effect was not observed for ligands based on the binaphthyl (BINAP) series. The catalytic activity of these complexes was subsequently assessed in the enantioselective cycloisomerisation of 1,6-enynes and revealed an over-riding electronic effect: more-electron-rich phosphines promote greater enantioselectivity. The possibility of silver acting as a (co-)catalyst was ruled out in these reactions.
Collapse
Affiliation(s)
- Elena M Barreiro
- Department of Chemistry, Imperial College LondonExhibition Road, South Kensington, London SW7 2AZ (UK) E-mail:
| | | | - Andrew J P White
- Department of Chemistry, Imperial College LondonExhibition Road, South Kensington, London SW7 2AZ (UK) E-mail:
| | - King Kuok (Mimi) Hii
- Department of Chemistry, Imperial College LondonExhibition Road, South Kensington, London SW7 2AZ (UK) E-mail:
| |
Collapse
|
42
|
Hasegawa M, Kurahashi T, Matsubara S. Rhodium(III) Porphyrin-catalyzed Reactions via Activation of Alkynes. CHEM LETT 2014. [DOI: 10.1246/cl.140810] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Makoto Hasegawa
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
| | - Takuya Kurahashi
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
- ACT-C, JST
| | - Seijiro Matsubara
- Department of Material Chemistry, Graduate School of Engineering, Kyoto University
| |
Collapse
|
43
|
Brooner REM, Robertson BD, Widenhoefer RA. Mechanism of 1,3-Hydrogen Migration in a Gold Bicyclo[3.2.0]heptene Complex: The Role of Brønsted Acid in the Gold-Catalyzed Cycloisomerization of 7-Aryl-1,6-Enynes. Organometallics 2014. [DOI: 10.1021/om500815k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Rachel E. M. Brooner
- Department of Chemistry,
French Family Science Center, Duke University, Durham, North Carolina 27708-0346, United States
| | - Bradley D. Robertson
- Department of Chemistry,
French Family Science Center, Duke University, Durham, North Carolina 27708-0346, United States
| | - Ross A. Widenhoefer
- Department of Chemistry,
French Family Science Center, Duke University, Durham, North Carolina 27708-0346, United States
| |
Collapse
|
44
|
Oh HM, Park JE, Kim J, Kim JH, Kang YK, Chung YK. Pd-catalyzed cycloisomerization of 4-aza-1,6-enynes to 3-aza-bicyclo[4.1.0]hept-2-enes. Chemistry 2014; 20:9024-36. [PMID: 24965708 DOI: 10.1002/chem.201402087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2014] [Indexed: 11/06/2022]
Abstract
A method for the synthesis of bicyclo[4.1.0]heptenes from 1,6-enynes through Pd-catalyzed cycloisomerization has been developed. N- and O-tethered 1,6-enynes were successfully transformed to their corresponding 3-aza- and 3-oxabicyclo[4.1.0]heptenes in reasonable-to-high yields using the catalysts [PdCl2(CH3CN)2]/P(OPh)3 or [Pd(maleimidate)2(PPh3)2] in toluene. The computational calculations using density functional theory indicate that [PdCl2{P(OPh)3}] in the oxidation state Pd(II) acts as the active catalyst species for the formation of 3-azabicyclo[4.1.0]heptenes through 6-endo-dig cyclization.
Collapse
Affiliation(s)
- Hye Mi Oh
- Department of Chemistry, College of Natural Sciences, Seoul National University, Seoul 151-747 (Korea)
| | | | | | | | | | | |
Collapse
|
45
|
Ho CY, He L. Medium-Sized Heterocycle Synthesis by the Use of Synergistic Effects of Ni-NHC and γ-Coordination in Cycloisomerization. J Org Chem 2014; 79:11873-84. [DOI: 10.1021/jo5008477] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Chun-Yu Ho
- Department
of Chemistry, South University of Science and Technology of China (SUSTC), Shenzhen 518055, P.R. China
- Center
of Novel Functional Molecules, Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin NT, Kong Kong
| | - Lisi He
- Center
of Novel Functional Molecules, Shenzhen Research Institute, The Chinese University of Hong Kong, Shatin NT, Kong Kong
| |
Collapse
|
46
|
Zhuo LG, Zhang JJ, Yu ZX. Mechanisms of the InCl3-Catalyzed Type-I, II, and III Cycloisomerizations of 1,6-Enynes. J Org Chem 2014; 79:3809-20. [DOI: 10.1021/jo500059j] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Lian-Gang Zhuo
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Ji-Ji Zhang
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| |
Collapse
|
47
|
Abstract
Cycloisomerizations of enynes are probably the most representative carbon-carbon bond forming reactions catalyzed by electrophilic metal complexes. These transformations are synthetically useful because chemists can use them to build complex architectures under mild conditions from readily assembled starting materials. However, these transformations can have complex mechanisms. In general, gold(I) activates alkynes in the presence of any other unsaturated functional group by forming an (η(2)-alkyne)-gold complex. This species reacts readily with nucleophiles, including electron-rich alkenes. In this case, the reaction forms cyclopropyl gold(I) carbene-like intermediates. These can come from different pathways depending on the substitution pattern of the alkyne and the alkene. In the absence of external nucleophiles, 1,n-enynes can form products of skeletal rearrangement in fully intramolecular reactions, which are mechanistically very different from metathesis reactions initiated by the [2 + 2] cycloaddition of a Grubbs-type carbene or other related metal carbenes. In this Account, we discuss how cycloisomerization and addition reactions of substituted enynes, as well as intermolecular reactions between alkynes and alkenes, are best interpreted as proceeding through discrete cationic intermediates in which gold(I) plays a significant role in the stabilization of the positive charge. The most important intermediates are highly delocalized cationic species that some chemists describe as cyclopropyl gold(I) carbenes or gold(I)-stabilized cyclopropylmethyl/cyclobutyl/homoallyl carbocations. However, we prefer the cyclopropyl gold(I) carbene formulation for its simplicity and mnemonic value, highlighting the tendency of these intermediates to undergo cyclopropanation reactions with alkenes. We can add a variety of hetero- and carbonucleophiles to the enynes in the presence of gold(I) in intra- or intermolecular reactions, leading to the corresponding adducts with high stereoselectivity through stereospecific anti-additions. We have also developed stereospecific syn-additions, which probably occur through similar intermediates. The attack of carbonyl groups at the cyclopropyl carbons of the intermediate cyclopropyl gold(I) carbenes initiates a particularly interesting group of reactions. These trigger a cascade transformation that can lead to the formation of two C-C and one C-O bonds. In the fully intramolecular process, this stereospecific transformation has been applied for the synthesis of natural sesquiterpenoids such as (+)-orientalol F and (-)-englerin A. Intra- and intermolecular trapping of cyclopropyl gold(I) carbenes with alkenes leads to the formation of cyclopropanes with significant increase in the molecular complexity, particularly in cases in which this process combines with the migration of propargylic alkoxy and related OR groups. We have recently shown this in the stereoselective total synthesis of the antiviral sesquiterpene (+)-schisanwilsonene by a cyclization/1,5-acetoxy migration/intermolecular cyclopropanation. In this synthesis, the cyclization/1,5-acetoxy migration is faster than the alternative 1,2-acyloxy migration that would result in racemization.
Collapse
Affiliation(s)
- Carla Obradors
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain
| | - Antonio M. Echavarren
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007 Tarragona, Spain
| |
Collapse
|
48
|
Stevenson SM, Newcomb ET, Ferreira EM. C–C bond migration in the cycloisomerization of oxygen-tethered 1,6-enynes. Chem Commun (Camb) 2014; 50:5239-41. [DOI: 10.1039/c3cc47499b] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
49
|
Nakae T, Yasunaga T, Kamiya M, Fukumoto Y, Chatani N. Skeletal Reorganization of Enynes Catalyzed by a Ru(II)–Ru(III) Mixed-valence Complex under an Atmosphere of O2 or CO. CHEM LETT 2013. [DOI: 10.1246/cl.130785] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Takahiro Nakae
- Department of Applied Chemistry, Faculty of Engineering, Osaka University
| | - Tomohiko Yasunaga
- Department of Applied Chemistry, Faculty of Engineering, Osaka University
| | - Motonobu Kamiya
- Department of Applied Chemistry, Faculty of Engineering, Osaka University
| | - Yoshiya Fukumoto
- Department of Applied Chemistry, Faculty of Engineering, Osaka University
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Osaka University
| |
Collapse
|
50
|
|