1
|
Abstract
During the past two decades, the interest in new methodologies for the synthesis of chiral N-functionalized indoles has grown rapidly. The review illustrates efficient applications of organocatalytic and organometallic strategies for the construction of chiral α-N-branched indoles. Both the direct functionalization of the indole core and indirect methods based on asymmetric N-alkylation of indolines, isatins and 4,7-dihydroindoles are discussed.
Collapse
|
2
|
Wang Y, Wang S, Shan W, Shao Z. Direct asymmetric N-propargylation of indoles and carbazoles catalyzed by lithium SPINOL phosphate. Nat Commun 2020; 11:226. [PMID: 31932668 PMCID: PMC6957506 DOI: 10.1038/s41467-019-13886-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 12/05/2019] [Indexed: 02/02/2023] Open
Abstract
Catalytic asymmetric functionalization of the N–H groups of indoles and carbazoles constitutes an important but less developed class of reactions. Herein, we describe a propargylation protocol involving the use of a lithium SPINOL phosphate as the chiral catalyst and our recently developed C-alkynyl N,O-acetals as propargylating reagents. The direct asymmetric N-propargylation of indoles and carbazoles provides hitherto inaccessible N-functionalized products. Notably, the efficiency of the system allows reactions to be run at a very low catalyst loading (as low as 0.1 mol%). Mechanistic information about the titled reaction is also disclosed. This study represents an advance in the direct asymmetric functionalization of the N–H bonds of indoles and carbazoles, and additionally expands on the application of chiral alkali metal salts of chiral phosphoric acids in asymmetric catalysis. Asymmetric functionalization of N–H bonds constitutes an important but less developed class of reactions. Here, the authors report the asymmetric direct N-propargylation of indoles and carbazoles with a lithium SPINOL phosphate as the chiral catalyst and shed light on the reaction mechanism.
Collapse
Affiliation(s)
- Yingcheng Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, 650091, China
| | - Sheng Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, 650091, China
| | - Wenyu Shan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, 650091, China
| | - Zhihui Shao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, School of Chemical Science and Technology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming, 650091, China.
| |
Collapse
|
3
|
Roh SW, Choi K, Lee C. Transition Metal Vinylidene- and Allenylidene-Mediated Catalysis in Organic Synthesis. Chem Rev 2019; 119:4293-4356. [PMID: 30768261 DOI: 10.1021/acs.chemrev.8b00568] [Citation(s) in RCA: 141] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
With their mechanistic novelty and various modalities of reactivity, transition metal unsaturated carbene (alkenylidene) complexes have emerged as versatile intermediates for new reaction discovery. In particular, the past decade has witnessed remarkable advances in the chemistry of metal vinylidenes and allenylidenes, leading to the evolution of a diverse array of new catalytic transformations that are mechanistically distinct from those developed in the previous two decades. This review aims to provide a survey of the recent achievements in the development of organic reactions that make use of transition metal alkenylidenes as catalytic intermediates and their applications to organic synthesis.
Collapse
Affiliation(s)
- Sang Weon Roh
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| | - Kyoungmin Choi
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| | - Chulbom Lee
- Department of Chemistry , Seoul National University , Seoul 08826 , Republic of Korea
| |
Collapse
|
4
|
Shao W, Wang Y, Yang ZP, Zhang X, You SL. Efficient Synthesis of N-Alkylated 4-Pyridones by Copper-Catalyzed Intermolecular Asymmetric Propargylic Amination. Chem Asian J 2018. [PMID: 29542867 DOI: 10.1002/asia.201800373] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Copper-catalyzed intermolecular asymmetric propargylic amination with 4-hydroxypyridines has been realized for the first time. In the presence of Cu complex derived from Pybox ligand, the N-propargylated 4-pyridones were obtained under mild reaction conditions with up to 99 % yield and 95 % ee. The Pybox ligand bearing a 4-F-phenyl substituent plays a key role for the high enantioselectivity. The products can be easily transformed to the core structure of quinolizidine alkaloids.
Collapse
Affiliation(s)
- Wen Shao
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Ye Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Ze-Peng Yang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Xiao Zhang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China.,Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China
| |
Collapse
|
5
|
Li L, Liu ZT, Hu XP. Copper-catalyzed propargylic [3+3] cycloaddition with 1H-pyrazol-5(4H)-ones: enantioselective access to optically active dihydropyrano[2,3-c]pyrazoles. Chem Commun (Camb) 2018; 54:12033-12036. [DOI: 10.1039/c8cc05706k] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A copper-catalyzed propargylic [3+3] cycloaddition with 1H-pyrazol-5(4H)-ones as C,O-bisnucleophiles through the desilylation-activated strategy has been developed. With the support of a chiral tridentate P,N,N-ligand, the reaction gave rise to a variety of optically active dihydropyrano[2,3-c]pyrazoles cyclohexadienone derivatives with up to 96% ee.
Collapse
Affiliation(s)
- Ling Li
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
- University of Chinese Academy of Sciences
| | - Zhen-Ting Liu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
- University of Chinese Academy of Sciences
| | - Xiang-Ping Hu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| |
Collapse
|
6
|
Roy R, Saha S. Scope and advances in the catalytic propargylic substitution reaction. RSC Adv 2018; 8:31129-31193. [PMID: 35548716 PMCID: PMC9085608 DOI: 10.1039/c8ra04481c] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 08/27/2018] [Indexed: 11/26/2022] Open
Abstract
Nucleophilic displacement of the propargylic alcohol is one of the sought-after methods in the current scenario. The highly nucleophilic alkyne functional moiety along with its considerably acidic terminal hydrogen atom allows the propargylic unit to play a crucial role in organic synthesis by offering a handle for further synthetic transformations. Until 2000, the most fundamental propargylic substitution reaction was the Nicolas reaction, a multi-step transformation, developed in 1972, which involved cobalt as a stoichiometric promoter. Therefore, the direct catalytic substitution of propargylic alcohols was a highly desirable method for development. The pioneering work on the Ru-catalyzed propargylic substitution reaction in 2000 encouraged many researchers to develop several novel catalytic propargylic substitution reactions, which have made rapid progress since then. The purpose of this review is to emphasise the involvement of diverse types of Lewis acid, transition metal and Brønsted acid catalysts in the propargylic substitution reaction and provide an updated summary of the recent developments in this field. The selected examples presented here are the most significant and relevant ones and we believe that this will help the readers to comprehend the scope of the propargylic substitution reaction with diverse types of catalysts and will envisage the scientific community for the future developments in this field. Direct nucleophilic displacement of the alpha-hydroxy of the propargylic alcohol is one of the sought-after methods in the current scenario. An updated summary of the recent developments in this field is presented here.![]()
Collapse
Affiliation(s)
| | - Satyajit Saha
- Department of Dyestuff Technology
- ICT Mumbai
- Mumbai
- India
| |
Collapse
|
7
|
Fu R, Li Z. N-Propargylation of secondary amines directly using calcium carbide as an acetylene source. JOURNAL OF CHEMICAL RESEARCH 2017. [DOI: 10.3184/174751917x14949427622099] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A one-pot N-propargylation of secondary amines has been achieved by heating the amine with formaldehyde and calcium carbide in DMSO in the presence of CuCl as a catalyst. Fifteen examples of propargylic tertiary amines, 12 of which are novel, were efficiently prepared in yields of 65–84%. The advantages of the method are broad substrate scope and a simple work-up procedure.
Collapse
Affiliation(s)
- Rugang Fu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P.R. China
| | - Zheng Li
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, P.R. China
| |
Collapse
|
8
|
Enantioselective synthesis of quaternary α-aminophosphonates by organocatalytic Friedel–Crafts reactions of indoles with cyclic α-ketiminophosphonates. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(17)62804-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
9
|
Shao L, Hu XP. Cu-Catalyzed asymmetric Friedel–Crafts propargylic alkylation of phenol derivatives. Org Biomol Chem 2017; 15:9837-9844. [DOI: 10.1039/c7ob02133j] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper-catalyzed asymmetric Friedel–Crafts propargylic alkylation of electron-rich phenol derivatives with a variety of propargylic esters has been described. With Cu(OTf)2 decorated with a chiral tridentate ketimine P,N,N-ligand as the catalyst, the reaction proceeded smoothly in high yields and with good to excellent enantioselectivities (up to 95% ee).
Collapse
Affiliation(s)
- Long Shao
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
- University of Chinese Academy of Sciences
| | - Xiang-Ping Hu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| |
Collapse
|
10
|
Chen XS, Hou CJ, Qin C, Liu H, Liu YJ, Huang DZ, Hu XP. Ir-catalyzed asymmetric hydrogenation of β-keto esters with chiral ferrocenyl P,N,N-ligands. RSC Adv 2017. [DOI: 10.1039/c7ra00472a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
The Ir-catalyzed asymmetric hydrogenation of β-keto esters with chiral ferrocenyl P,N,N-ligands has been developed, providing the corresponding β-hydroxy esters in good to excellent enantioselectivities.
Collapse
Affiliation(s)
- Xiu-Shuai Chen
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
- Dalian Institute of Chemical Physics
| | - Chuan-Jin Hou
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
- Post-Doctoral Research Station of Dalian Zhenbang Fluorocarbon Paint Stock Co., Ltd
| | - Chao Qin
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
- Dalian Institute of Chemical Physics
| | - Hongzhu Liu
- Post-Doctoral Research Station of Dalian Zhenbang Fluorocarbon Paint Stock Co., Ltd
- Dalian 116036
- China
| | - Yan-Jun Liu
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - De-Zhi Huang
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Xiang-Ping Hu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| |
Collapse
|
11
|
Hou CJ, Hu XP. Sterically Hindered Chiral Ferrocenyl P,N,N-Ligands for Highly Diastereo-/Enantioselective Ir-Catalyzed Hydrogenation of α-Alkyl-β-ketoesters via Dynamic Kinetic Resolution. Org Lett 2016; 18:5592-5595. [DOI: 10.1021/acs.orglett.6b02828] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chuan-Jin Hou
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
- School of Light
Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Xiang-Ping Hu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| |
Collapse
|
12
|
Chen X, Hou C, Li Q, Liu Y, Yang R, Hu X. Enantioselective synthesis of chiral phosphonylated 2,3-dihydrofurans by copper catalyzed asymmetric formal [3+2] cycloaddition of propargylic esters with β-keto phosphonates. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(16)62488-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
13
|
Shao L, Zhang DY, Wang YH, Hu XP. Enantioselective Copper-Catalyzed Propargylic Etherification of Propargylic Esters with Phenols Promoted by Inorganic Base Additives. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600284] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Long Shao
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 People's Republic of China
- University of Chinese Academy of Sciences; Beijing 100049 People's Republic of China
| | - De-Yang Zhang
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 People's Republic of China
- University of Chinese Academy of Sciences; Beijing 100049 People's Republic of China
| | - Ya-Hui Wang
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 People's Republic of China
| | - Xiang-Ping Hu
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian 116023 People's Republic of China
| |
Collapse
|
14
|
Tsuchida K, Senda Y, Nakajima K, Nishibayashi Y. Construction of Chiral Tri‐ and Tetra‐Arylmethanes Bearing Quaternary Carbon Centers: Copper‐Catalyzed Enantioselective Propargylation of Indoles with Propargylic Esters. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201604182] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Kouhei Tsuchida
- Department of Systems Innovation, School of Engineering The University of Tokyo, Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Yasushi Senda
- Department of Systems Innovation, School of Engineering The University of Tokyo, Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Kazunari Nakajima
- Department of Systems Innovation, School of Engineering The University of Tokyo, Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Yoshiaki Nishibayashi
- Department of Systems Innovation, School of Engineering The University of Tokyo, Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| |
Collapse
|
15
|
Tsuchida K, Senda Y, Nakajima K, Nishibayashi Y. Construction of Chiral Tri‐ and Tetra‐Arylmethanes Bearing Quaternary Carbon Centers: Copper‐Catalyzed Enantioselective Propargylation of Indoles with Propargylic Esters. Angew Chem Int Ed Engl 2016; 55:9728-32. [DOI: 10.1002/anie.201604182] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Kouhei Tsuchida
- Department of Systems Innovation, School of Engineering The University of Tokyo, Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Yasushi Senda
- Department of Systems Innovation, School of Engineering The University of Tokyo, Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Kazunari Nakajima
- Department of Systems Innovation, School of Engineering The University of Tokyo, Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| | - Yoshiaki Nishibayashi
- Department of Systems Innovation, School of Engineering The University of Tokyo, Hongo, Bunkyo-ku Tokyo 113-8656 Japan
| |
Collapse
|
16
|
Shao L, Wang YH, Zhang DY, Xu J, Hu XP. Desilylation-Activated Propargylic Transformation: Enantioselective Copper-Catalyzed [3+2] Cycloaddition of Propargylic Esters with β-Naphthol or Phenol Derivatives. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201510793] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Long Shao
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Ya-Hui Wang
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 China
| | - De-Yang Zhang
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Jie Xu
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 China
| | - Xiang-Ping Hu
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 China
| |
Collapse
|
17
|
Shao L, Wang YH, Zhang DY, Xu J, Hu XP. Desilylation-Activated Propargylic Transformation: Enantioselective Copper-Catalyzed [3+2] Cycloaddition of Propargylic Esters with β-Naphthol or Phenol Derivatives. Angew Chem Int Ed Engl 2016; 55:5014-8. [DOI: 10.1002/anie.201510793] [Citation(s) in RCA: 87] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 02/08/2016] [Indexed: 01/14/2023]
Affiliation(s)
- Long Shao
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Ya-Hui Wang
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 China
| | - De-Yang Zhang
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 China
- University of Chinese Academy of Sciences; Beijing 100049 China
| | - Jie Xu
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 China
| | - Xiang-Ping Hu
- Dalian Institute of Chemical Physics; Chinese Academy of Sciences; 457 Zhongshan Road Dalian 116023 China
| |
Collapse
|
18
|
Liu ZT, Wang YH, Zhu FL, Hu XP. Enantioselective Copper-Catalyzed Formal [4 + 2] Cycloaddition of o-Aminophenol Derivatives with Propargylic Esters for Synthesis of Optically Active 3,4-Dihydro-2H-1,4-benzoxazines. Org Lett 2016; 18:1190-3. [DOI: 10.1021/acs.orglett.6b00322] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhen-Ting Liu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ya-Hui Wang
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Fu-Lin Zhu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiang-Ping Hu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| |
Collapse
|
19
|
Zhang C, Hui YZ, Zhang DY, Hu XP. Highly diastereo-/enantioselective Cu-catalyzed propargylic alkylations of propargyl acetates with cyclic enamines. RSC Adv 2016. [DOI: 10.1039/c5ra25627e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Highly diastereo- and enantioselective copper-catalyzed propargylic alkylations of morpholine-derived cyclic enamines have been developed by the employment of a less sterically hindered chiral tridentate P,N,N-ligand.
Collapse
Affiliation(s)
- Cheng Zhang
- Department of Drug Discovery and Biomedical Sciences
- South Carolina College of Pharmacy
- Medical University of South Carolina
- Charleston
- USA
| | - Yun-Ze Hui
- Faculty of Engineering and Built Environment
- University of Newcastle
- Callaghan
- Australia
| | - De-Yang Zhang
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| | - Xiang-Ping Hu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| |
Collapse
|
20
|
Zhang DY, Shao L, Xu J, Hu XP. Copper-Catalyzed Asymmetric Formal [3 + 2] Cycloaddition of Propargylic Acetates with Hydrazines: Enantioselective Synthesis of Optically Active 2-Pyrazolines. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01283] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- De-Yang Zhang
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, Dalian 116023, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Long Shao
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, Dalian 116023, China
- University of the Chinese Academy of Sciences, Beijing 100049, China
| | - Jie Xu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, Dalian 116023, China
| | - Xiang-Ping Hu
- Dalian
Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan
Road, Dalian 116023, China
| |
Collapse
|
21
|
Shao W, Li H, Liu C, Liu CJ, You SL. Copper-Catalyzed Intermolecular Asymmetric Propargylic Dearomatization of Indoles. Angew Chem Int Ed Engl 2015; 54:7684-7. [DOI: 10.1002/anie.201503042] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2015] [Revised: 04/14/2015] [Indexed: 12/31/2022]
|
22
|
Shao W, Li H, Liu C, Liu CJ, You SL. Copper-Catalyzed Intermolecular Asymmetric Propargylic Dearomatization of Indoles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201503042] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
|
23
|
Li Q, Hou CJ, Hui YZ, Liu YJ, Yang RF, Hu XP. Tridentate P,N,N-ligand promoted copper-catalyzed [3 + 2] cycloaddition of propargylic esters with β-enamino esters: synthesis of highly functionalized pyrroles. RSC Adv 2015. [DOI: 10.1039/c5ra19304d] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
By employment of a newly developed tridentate P,N,N-ligand, a copper-catalyzed [3 + 2] cycloaddition of propargylic esters with β-enamino esters for the construction of highly functionalized pyrroles has been developed.
Collapse
Affiliation(s)
- Qing Li
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
- Dalian Institute of Chemical Physics
| | - Chuan-Jin Hou
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
- Dalian Institute of Chemical Physics
| | - Yun-Ze Hui
- Faculty of Engineering and Built Environment
- University of Newcastle
- Callaghan
- Australia
| | - Yan-Jun Liu
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Rui-Feng Yang
- School of Light Industry and Chemical Engineering
- Dalian Polytechnic University
- Dalian 116034
- China
| | - Xiang-Ping Hu
- Dalian Institute of Chemical Physics
- Chinese Academy of Sciences
- Dalian 116023
- China
| |
Collapse
|