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Xu B, Ji D, Zhang ZM, Zhang J. Remote C─H Bond Activation via Enantioselective Carbopalladation and 1,4-Pd Migration Cascade Process. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2406443. [PMID: 39225313 DOI: 10.1002/advs.202406443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2024] [Revised: 08/04/2024] [Indexed: 09/04/2024]
Abstract
Carbopalladation-initiated cascade reaction involving 1,4-Pd migration is a straightforward and powerful approach to activate remote C─H bond, forging versatile fused polycyclic compounds containing fluorene fragment which are highly valuable synthetic targets. However, its asymmetric variants pose considerable challenges and have not been explored. Here the first asymmetric palladium-catalyzed tandem carbopalladation is reported, 1,4-Pd migration reaction of ortho-iodophenol-derived allyl ether under mild conditions, allowing the transformation of a wide range of substrates in good to excellent enantioselectivities, and providing a facile and straight forward access to tetracyclic dihydroindeno[1,2,3-de]chromene bearing a chiral fluorene skeleton. A good functional group tolerance, high stereoselectivity, as well as the good chiroptical properties (high fluorescence quantum yields, circular dichroism) of the products make this approach highly attractive. Moreover, density functional theory (DFT) calculations indicate that the protonation of five-membered palladacycle intermediate is more favorable rather than its direct reductive elimination process.
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Affiliation(s)
- Bing Xu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
- Zhuhai Fudan Innovation Institute, Hengqing District, Zhuhai, 519000, China
| | - Danting Ji
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, China
| | - Zhan-Ming Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
- Fudan Zhangjiang Institute, Shanghai, 201203, China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, 200062, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China
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2
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Wang H, Chi X, Zhang X, Zhang L, Liu Q, Zhao Z, Zhang D, Cui H, Liu H. Electromagnetic Mill-Promoted Palladium-Catalyzed Heck-Type Cyclization/Decarboxylative Coupling of ( Z)-1-Iodo-1,6-diene with Propiolic Acids. J Org Chem 2024; 89:5320-5327. [PMID: 38554091 DOI: 10.1021/acs.joc.3c02689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2024]
Abstract
Electromagnetic mill (EMM)-promoted solid-state cascade Heck-type cyclization/decarboxylative coupling of propiolic acid with (Z)-1-iodo-1,6-diene derivate was demonstrated. The reaction was realized via palladium catalysis, which is solvent-free and involves no additional heating. The collision between ferromagnetic rods could not only be a favor to the mixing between the solid substrates and the catalyst system, but also the thermogenic action could accelerate this transformation. More importantly, this EMM strategy realized multiple bond construction under mechanochemical conditions in one pot.
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Affiliation(s)
- Hui Wang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Xiaochen Chi
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
- Shandong Xinhua Pharmaceutical Company Limited, No.1, Lutai Road, Zibo 255000, People's Republic of China
| | - Xianqing Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Lizhi Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Qing Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Zengdian Zhao
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Daopeng Zhang
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Hongyou Cui
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
| | - Hui Liu
- School of Chemistry and Chemical Engineering, Shandong University of Technology, 266 West Xincun Road, Zibo 255049, People's Republic of China
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3
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Fang C, Wang QP, Xu B, Zhang ZM, Zhang J. Palladium/XuPhos-catalyzed enantioselective cascade Heck/intermolecular C(sp 2)-H alkylation reaction. Chem Sci 2024; 15:5573-5580. [PMID: 38638207 PMCID: PMC11023025 DOI: 10.1039/d4sc00262h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 03/08/2024] [Indexed: 04/20/2024] Open
Abstract
Palladium-catalyzed enantioselective domino Heck/intramolecular C-H functionalization reaction, as a valuable strategy for creating molecular diversity, has remained a prominent challenge. Here, we describe a Pd/XuPhos catalyst for asymmetric domino Heck/intermolecular C-H alkylation of unactivated alkenes with diverse polyfluoro- and heteroarenes in a highly chemo- and enantioselective manner. This process enables efficient synthesis of various dihydrobenzofurans, indolines and indanes, which are of interest in pharmaceutical research and other areas. Late-stage modifications of the core structures of natural products are also well showcased. Moreover, synthetic transformations create a valuable platform for preparing a series of functionalized molecules. Several control experiments for mechanistic study are conducted to pursue a further understanding of the reaction.
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Affiliation(s)
- Chao Fang
- Department of Chemistry, Fudan University Shanghai 200438 P. R. China
| | - Quan-Pu Wang
- Department of Chemistry, Fudan University Shanghai 200438 P. R. China
| | - Bing Xu
- Department of Chemistry, Fudan University Shanghai 200438 P. R. China
- Zhuhai Fudan Innovation Institute Zhuhai Guangdong 519000 P. R. China
| | - Zhan-Ming Zhang
- Department of Chemistry, Fudan University Shanghai 200438 P. R. China
- Fudan Zhangjiang Institute Shanghai 201203 P. R. China
| | - Junliang Zhang
- Department of Chemistry, Fudan University Shanghai 200438 P. R. China
- Zhuhai Fudan Innovation Institute Zhuhai Guangdong 519000 P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 P. R. China
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4
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Li W, Zhang J. Sadphos as Adaptive Ligands in Asymmetric Palladium Catalysis. Acc Chem Res 2024. [PMID: 38295326 DOI: 10.1021/acs.accounts.3c00648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
ConspectusPalladium catalysis, as one of the most important strategies in asymmetric synthesis, has continuously attracted the attention of organic chemists. With the development of chiral ligands, increasingly challenging reactions and substantial progress in asymmetric catalysis are being realized.Since 2014, we have focused on exploiting a series of sulfinamide phosphine ligands called "Sadphos," including Ming-Phos, Xu-Phos, Xiao-Phos, Xiang-Phos, TY-Phos, PC-Phos, GF-Phos, and WJ-Phos. These ligands can be easily prepared in two to four steps using commercial materials. These new types of ligands have shown remarkable performance in transition-metal-catalyzed reactions, especially in Pd-catalyzed transformations. X-ray diffraction analysis, mechanistic studies, and density functional theory calculations have revealed that Sadphos ligands can coordinate with the Pd0 and PdII species in the Pd0/P, Pd0/P,S, or PdII/P,O modes.This Account summarizes our recent efforts toward palladium-catalyzed enantioselective reactions using Sadphos ligands. These ligands were found to be privileged and very crucial to promote the reactions by increasing the reactivity and enantioselectivity. Ming-Phos is an effective ligand in Pd-catalyzed asymmetric coupling and intramolecular Heck reactions, providing highly enantioselective trisubstituted allenes, axially chiral anilides, gem-diarylmethine silanes, and disubstituted dihydroisoquinolinones. Incorporation of an electron-rich cyclohexyl group in the phosphine moiety afforded Xu-Phos, which showed a unique effect in a series of asymmetric transformations, including reductive Heck, dearomative Mizoroki-Heck, tandem Heck/Suzuki coupling, carboiodination, carboamination, and cross-coupling reactions. Using a similar strategy, our group synthesized more electron-rich TY-Phos and Xiang-Phos ligands bearing t-butyl and 1-adamantyl group at P atoms, respectively. Regarding stereoelectronic features, these two characteristic ligands were the best choice to satisfy the requirements of the palladium-catalyzed fluoroarylation of gem-difluoroalkenes, intermolecular α-arylation of aldehydes, carboetherification of alkenyl oximes, and carboheterofunctionalization of 2,3-dihydrofurans. Compared with the aforementioned Sadphos ligands, the attractive features of Xiao-Phos, including high nucleophilicity originating from the CH2PPh2 group and the ortho-substituent effect at the side of the aryl ring, are presumably responsible for its efficiency. The Pd/Xiao-Phos catalyst system shows good performance in a series of cross-coupling reactions of secondary phosphine oxides, affording P-stereogenic products bearing multiple types of molecular skeletons. The modification of the basic Sadphos backbone by introducing a xanthene skeleton motivated us to design and synthesize monophosphines, named PC-Phos and GF-Phos. PC-Phos is effective in various reactions, including arylation of sulfenate anions, denitrogenative cyclization of benzotriazoles, and dearomatization of indoles. The practicability of GF-Phos was validated in the Pd-catalyzed asymmetric three-component coupling of N-tosylhydrazones, aryl halides, and terminal alkynes, as well as in the cross-coupling of N-tosylhydrazones and vinyl iodides with pendent amines. In addition, ferrocene-derived WJ-Phos was employed in the palladium-catalyzed Suzuki-Miyaura cross-coupling reaction, affording axially chiral biaryl monophosphine oxides in excellent enantiomeric excesses.
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Affiliation(s)
- Wenbo Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200433, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, China
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Xu B, Wang Q, Fang C, Zhang ZM, Zhang J. Recent advances in Pd-catalyzed asymmetric cyclization reactions. Chem Soc Rev 2024; 53:883-971. [PMID: 38108127 DOI: 10.1039/d3cs00489a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
Over the past few decades, there have been major developments in transition metal-catalyzed asymmetric cyclization reactions, enabling the convenient access to a wide spectrum of structurally diverse chiral carbo- and hetero-cycles, common skeletons found in fine chemicals, natural products, pharmaceuticals, agrochemicals, and materials. In particular, a plethora of enantioselective cyclization reactions have been promoted by chiral palladium catalysts owing to their outstanding features. This review aims to collect the latest advancements in enantioselective palladium-catalyzed cyclization reactions over the past eleven years, and it is organized into thirteen sections depending on the different types of transformations involved.
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Affiliation(s)
- Bing Xu
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China.
- Zhuhai Fudan Innovation Institute, Zhuhai 519000, China
| | - Quanpu Wang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China.
| | - Chao Fang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China.
| | - Zhan-Ming Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China.
- Fudan Zhangjiang Institute, Shanghai 201203, China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China.
- Fudan Zhangjiang Institute, Shanghai 201203, China
- School of Chemisty and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China
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6
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Rizzo C, Pace A, Pibiri I, Buscemi S, Palumbo Piccionello A. From Conventional to Sustainable Catalytic Approaches for Heterocycles Synthesis. CHEMSUSCHEM 2023:e202301604. [PMID: 38140917 DOI: 10.1002/cssc.202301604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/19/2023] [Accepted: 12/22/2023] [Indexed: 12/24/2023]
Abstract
Synthesis of heterocyclic compounds is fundamental for all the research area in chemistry, from drug synthesis to material science. In this framework, catalysed synthetic methods are of great interest to effective reach such important building blocks. In this review, we will report on some selected examples from the last five years, of the major improvement in the field, focusing on the most important conventional catalytic systems, such as transition metals, organocatalysts, to more sustainable ones such as photocatalysts, iodine-catalysed reaction, electrochemical reactions and green innovative methods.
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Affiliation(s)
- Carla Rizzo
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, Italy, University of Palermo, Viale delle Scienze, Ed. 17, 90128, Palermo
| | - Andrea Pace
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, Italy, University of Palermo, Viale delle Scienze, Ed. 17, 90128, Palermo
| | - Ivana Pibiri
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, Italy, University of Palermo, Viale delle Scienze, Ed. 17, 90128, Palermo
| | - Silvestre Buscemi
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, Italy, University of Palermo, Viale delle Scienze, Ed. 17, 90128, Palermo
| | - Antonio Palumbo Piccionello
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, Italy, University of Palermo, Viale delle Scienze, Ed. 17, 90128, Palermo
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7
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Ajmeera S, Golagani D, Akondi SM. Ferrocene catalyzed carbohydroxylation of alkenes using H 2O and cycloketone oxime esters. Org Biomol Chem 2023; 21:8482-8487. [PMID: 37853953 DOI: 10.1039/d3ob01481a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
A cyanoalkyl-hydroxylation reaction of aryl alkenes has been successfully devised, employing ferrocene as a catalyst for the addition of a cycloketone oxime ester and H2O across the double bond of the alkene. This environmentally friendly approach employs a solvent mixture consisting of water and demonstrates redox neutrality, along with exceptional regio- and chemoselectivity, leading to the formation of diverse distal hydroxy-nitrile compounds. Moreover, this research presents noteworthy contributions in terms of late-stage functionalization of complex molecules and offers valuable insights into the mechanistic aspects of the reaction.
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Affiliation(s)
- Sriram Ajmeera
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad-500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Durga Golagani
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad-500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Srirama Murthy Akondi
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad-500007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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8
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Yang L, Liang X, Ding Y, Li X, Li X, Zeng Q. Transition Metal-Catalyzed Enantioselective Synthesis of Chiral Five- and Six-Membered Benzo O-heterocycles. CHEM REC 2023; 23:e202300173. [PMID: 37401804 DOI: 10.1002/tcr.202300173] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/22/2023] [Indexed: 07/05/2023]
Abstract
Enantiomerically enriched five- and six-membered benzo oxygen heterocycles are privileged architectures in functional organic molecules. Over the last several years, many effective methods have been established to access these compounds. However, comprehensive documents cover updated methodologies still in highly demand. In this review, recent transition metal catalyzed transformations lead to chiral five- and six-membered benzo oxygen heterocycles are presented. The mechanism and chirality transfer or control processes are also discussed in details.
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Affiliation(s)
- Lu Yang
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Xiayu Liang
- College of Materials, Chemistry & Chemical Engineering, Chengdu, 610059, People's Republic of China
| | - Yuyang Ding
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Xinran Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Xuefeng Li
- Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, Key Laboratory of Pollution Control Chemistry and Environmental Functional Materials for Qinghai-Tibet Plateau of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu, 610041, People's Republic of China
| | - Qingle Zeng
- College of Materials, Chemistry & Chemical Engineering, Chengdu, 610059, People's Republic of China
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9
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Luo W, Xu F, Wang Z, Pang J, Wang Z, Sun Z, Peng A, Cao X, Li L. Chemodivergent Staudinger Reactions of Secondary Phosphine Oxides and Application to the Total Synthesis of LL-D05139β Potassium Salt. Angew Chem Int Ed Engl 2023; 62:e202310118. [PMID: 37594845 DOI: 10.1002/anie.202310118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 08/15/2023] [Accepted: 08/16/2023] [Indexed: 08/19/2023]
Abstract
Unprecedented Staudinger reaction modes of secondary phosphine oxides (SPO) and organic azides are herein disclosed. By the application of various additives, selective nitrogen atom exclusion from the azide group has been achieved. Chlorotrimethylsilane mediates a stereoretentive Staudinger reaction with a 2-N exclusion which provides a valuable method for the synthesis of phosphinic amides and can be considered complementary to the stereoinvertive Atherton-Todd reaction. Alternatively, a 1-N exclusion pathway is promoted by acetic acid to provide the corresponding diazo compound. The effectiveness of this protocol has been further demonstrated by the total synthesis of the diazo-containing natural product LL-D05139β, which was prepared as a potassium salt for the first time in 6 steps and 26.5 % overall yield.
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Affiliation(s)
- Wenjun Luo
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Fang Xu
- International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development, Ministry of Education (MOE) of P. R. China, College of Pharmacy, Jinan University, 510632, Guangzhou, Guangdong, P. R. China
| | - Zhenguo Wang
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Jiyan Pang
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Zixu Wang
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Zhixiu Sun
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Aiyun Peng
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
| | - Xiaohui Cao
- School of Pharmacy, Guangdong Pharmaceutical University, 510006, Guangzhou, P. R. China
| | - Le Li
- School of Chemistry, Sun Yat-sen University, 510275, Guangzhou, P. R. China
- PCFM Lab and GDHPRC Lab, Sun Yat-sen University, 510275, Guangzhou, P. R. China
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10
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Zou L, Gao Y, Zhang Q, Ye XY, Xie T, Wang LW, Ye Y. Recent Progress in Asymmetric Domino Intramolecular Cyclization/Cascade Reactions of Substituted Olefins. Chem Asian J 2023; 18:e202300617. [PMID: 37462417 DOI: 10.1002/asia.202300617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 07/18/2023] [Indexed: 08/02/2023]
Abstract
The domino cyclization/coupling strategy is one of the most effective methods to produce cyclized and multi-functionalized compounds from olefins, which has attracted huge attention from chemists and biochemists especially for its considerable potential of enantiocontrol. Nowadays, more and more studies are developed to achieve difunctionalization of substituted olefins through an asymmetric domino intramolecular cyclization/cascade reaction, which is still an elegant choice to accomplish several synthetic ideas such as complex natural products and drugs. This review surveys the recent advances in this field through reaction type classification. It might serve as useful knowledge desktop for the community and accelerate their research.
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Affiliation(s)
- Liang Zou
- School of Pharmacy, Hangzhou Normal University, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou, Zhejiang 311121, P. R. China
| | - Yuan Gao
- Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 200000, P. R. China
| | - Qiaoman Zhang
- School of Pharmacy, Hangzhou Normal University, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou, Zhejiang 311121, P. R. China
| | - Xiang-Yang Ye
- School of Pharmacy, Hangzhou Normal University, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou, Zhejiang 311121, P. R. China
| | - Tian Xie
- School of Pharmacy, Hangzhou Normal University, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou, Zhejiang 311121, P. R. China
| | - Li-Wei Wang
- School of Pharmacy, Hangzhou Normal University, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou, Zhejiang 311121, P. R. China
| | - Yang Ye
- School of Pharmacy, Hangzhou Normal University, Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines, Engineering Laboratory of Development and Application of Traditional Chinese Medicines, Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou, Zhejiang 311121, P. R. China
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11
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Chen C, Liu L, Liu JP, Ding J, Ni C, Ni C, Zhu B. Palladium-catalyzed Heck-carbonylation of alkene-tethered carbamoyl chlorides with aryl formates. Org Biomol Chem 2023; 21:7129-7135. [PMID: 37602718 DOI: 10.1039/d3ob01149f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
We report a palladium-catalyzed Heck-carbonylation of alkene-tethered carbamoyl chlorides by utilizing aryl formates as convenient CO surrogates. One C-O and two C-C bonds are constructed to give diversiform esterified oxindoles/γ-lactams bearing an all-carbon quaternary stereocenter under gas-free conditions. This transformation features a wide substrate scope and good functional group tolerance and can be easily applied to late-stage functionalization.
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Affiliation(s)
- Chen Chen
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China.
| | - Liying Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China.
| | - Jin-Ping Liu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China.
| | - Jie Ding
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China.
| | - Chang Ni
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China.
| | - Chunjie Ni
- School of Pharmacy, Yancheng Teachers University, Yancheng 224007, P. R. China.
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, College of Chemistry, Tianjin Normal University, Tianjin 300387, P. R. China.
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12
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Cao J, Xu LW. Palladium- and nickel-catalyzed cascade enantioselective ring-opening/coupling reactions of cyclobutanones. Chem Commun (Camb) 2023; 59:3373-3382. [PMID: 36806356 DOI: 10.1039/d3cc00205e] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
The chemistry of small ring compounds is an intriguing subject in organic chemistry. As the smallest stable cyclic aliphatic ketones, cyclobutanones have garnered tremendous attention owing to their intrinsic high reactivity such as transition-metal catalyzed C-C bond cleavage. In this context, transition-metal catalyzed formal cycloaddition of cyclobutanones via a "cut and sew" strategy has gained marvelous advances. In contrast, an alternative reaction paradigm, i.e., transition-metal catalyzed ring-opening reactions of cyclobutanones, is still underdeveloped. This feature article aims to summarize our efforts in developing enantioselective palladium-catalyzed ring-opening/coupling reactions and recently emerging nickel-catalyzed ring-opening/reductive coupling reactions of cyclobutanones with a tethered aryl halide. The possible mechanisms are briefly showcased and the advantages and limitations of each strategy as well as their synthetic applications in the synthesis of natural products or bioactive compounds are presented.
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Affiliation(s)
- Jian Cao
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, P. R. China.
| | - Li-Wen Xu
- College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Key Laboratory of Organosilicon Material Technology of Zhejiang Province, Hangzhou Normal University, Hangzhou, 311121, Zhejiang, P. R. China. .,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Suzhou Research Institute and Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Hangzhou, P. R. China
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13
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Tu Y, Xu B, Wang Q, Dong H, Zhang ZM, Zhang J. Palladium/TY-Phos-Catalyzed Asymmetric Heck/Tsuji-Trost Reaction of o-Bromophenols with 1,3-Dienes. J Am Chem Soc 2023; 145:4378-4383. [PMID: 36795796 DOI: 10.1021/jacs.2c12752] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
2,3-Dihydrobenzofurans are crucial building blocks in the synthesis of natural products and pharmaceutical molecules. However, their asymmetric synthesis has been a long-standing formidable challenge so far. In this work, we developed a highly enantioselective Pd/TY-Phos-catalyzed Heck/Tsuji-Trost reaction of o-bromophenols with various 1,3-dienes, allowing expedient access to chiral substituted 2,3-dihydrobenzofurans. This reaction features excellent regio- and enantiocontrol, high functional group tolerance, and easy scalability. More importantly, the demonstration of this method as a highly valuable tool for the construction of optically pure natural products (R)-tremetone and fomannoxin is highlighted.
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Affiliation(s)
- Youshao Tu
- Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Bing Xu
- Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Qian Wang
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, P. R. China
| | - Honglin Dong
- College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology, Changchun 130012, P. R. China
| | - Zhan-Ming Zhang
- Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, Shanghai 200438, P. R. China
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14
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Zhao H, Ding S, Li D, Chai M, Dai L, Li J, Jiang Y, Weng T, Wang J. Stereoselective Construction of Unsymmetrically Linked Heterocycles via Palladium-Catalyzed Alkyne Insertion/Cycloimidoylation Cascade. J Org Chem 2023; 88:1613-1624. [PMID: 36642919 DOI: 10.1021/acs.joc.2c02660] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A novel strategy to access unsymmetrically linked heterocycles via palladium-catalyzed acylcycloimidoylation of alkyne-tethered carbamoyl chlorides with isocyanides has been developed. Functionalized isocyanides were successfully applied as imine-containing heterocycle precursors to capture the vinyl-PdII intermediate, which was generated from a syn-carbopalladation of alkyne, followed by subsequent intramolecular C-H bond activation/imidoylative Heck reactions. Methylene oxindoles within Z-tetrasubstituted olefins were obtained in high yields with excellent stereoselectivities. Broad functional groups were well tolerated under mild reaction conditions.
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Affiliation(s)
- Haixia Zhao
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Shumin Ding
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Dan Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Minxue Chai
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Lixiong Dai
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China.,Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325000, China
| | - Jing Li
- Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, 190 Kaiyuan Avenue, Guangzhou 510530, People's Republic of China
| | - Yuchen Jiang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Tongqing Weng
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
| | - Jian Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241000, P. R. China
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15
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10 Gram-scale synthesis of TY-Phos ligand and its application in carbene insertion of Si-H bonds. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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16
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Huang J, Chen Z. The Alkynylative Difunctionalization of Alkenes. Chemistry 2022; 28:e202201519. [DOI: 10.1002/chem.202201519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Indexed: 11/09/2022]
Affiliation(s)
- Jie Huang
- School of Chemistry and Chemical Engineering Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Shanghai Jiao Tong University Shanghai 200240 P. R. China
| | - Zhi‐Min Chen
- School of Chemistry and Chemical Engineering Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Shanghai Jiao Tong University Shanghai 200240 P. R. China
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17
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Wang MM, Lu SM, Li C. Carbo-Carboxylation of Alkenes via Intramolecular Heck Carbonylation Utilizing CO 2 and Hydrosilane. ACS Catal 2022. [DOI: 10.1021/acscatal.2c03478] [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)
- Meng-Meng Wang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Sheng-Mei Lu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Can Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- National Laboratory for Clean Energy, Dalian 116023, China
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18
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Guo JM, Mao ZY, Liu CH, Yang SY, Wei BG. Palladium-Catalyzed Sequential Heck Reactions of Olefin-Tethered Aryl Iodides with Alkenes. J Org Chem 2022; 87:11838-11845. [PMID: 35981349 DOI: 10.1021/acs.joc.2c01694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient approach to functionalized (E)-3-cinnamyl-3-methyl-2,3-dihydrobenzofurans and (E)-(3-methyl-2,3-dihydrobenzofuran-3-yl)but-2-enones has been developed through a Pd-catalyzed one-pot cascade process involving two sequential Heck reactions, that is, an intramolecular Heck reaction of olefin-tethered aryl iodides and an intermolecular Heck reaction with substituted styrenes and α,β-unsaturated ketones. As a result, a series of desired products were obtained in moderate to good yields and with exclusive E-form selectivities.
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Affiliation(s)
- Jia-Ming Guo
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Zhuo-Ya Mao
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Chang-Hong Liu
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Shang-Ye Yang
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
| | - Bang-Guo Wei
- Department of Natural Medicine, School of Pharmacy, Fudan University, 826 Zhangheng Road, Shanghai 201203, China
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19
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Najafi M, Alinezhad H, Ghasemi S, Yeganeh-Salman E. Synthesis of nanocatalyst Pd immobilized on ZPD as efficient and reusable for Sonogashira cross-coupling reaction. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2022.122497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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20
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Luo W, Zhang LM, Zhang ZM, Zhang J. Synthesis of W-Phos Ligand and Its Application in the Copper-Catalyzed Enantioselective Addition of Linear Grignard Reagents to Ketones. Angew Chem Int Ed Engl 2022; 61:e202204443. [PMID: 35555954 DOI: 10.1002/anie.202204443] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Indexed: 12/31/2022]
Abstract
The asymmetric catalytic addition of linear Grignard reagents to ketones has been a long-standing challenge in organic synthesis. Herein, a novel family of PNP ligands (W-Phos) was designed and applied in copper-catalyzed asymmetric addition of linear Grignard reagents to aryl alkyl ketones, allowing facile access to versatile chiral tertiary alcohols in good to high yields with excellent enantioselectivities (up to 94 % yield, 96 % ee). The process can also be used to synthesize chiral allylic tertiary alcohols from more challenging α,β-unsaturated ketones. Notably, the potential utility of this method is demonstrated in the gram-scale synthesis and modification of various densely functionalized medicinally relevant molecules.
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Affiliation(s)
- Wenjun Luo
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China.,Zhuhai Fudan Innovation Institute, Hengqin NewArea, Zhuhai, 519000, P.R. China
| | - Li-Ming Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China
| | - Zhan-Ming Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China.,Zhuhai Fudan Innovation Institute, Hengqin NewArea, Zhuhai, 519000, P.R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, P. R. China
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21
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Wu X, Luan B, Zhao W, He F, Wu XY, Qu J, Chen Y. Catalytic Desymmetric Dicarbofunctionalization of Unactivated Alkenes. Angew Chem Int Ed Engl 2022; 61:e202111598. [PMID: 35286744 DOI: 10.1002/anie.202111598] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Indexed: 12/16/2022]
Abstract
The construction of multi-stereocenters by a transition metal-catalyzed cross-coupling reaction is a major challenge. The catalytic desymmetric functionalization of unactivated alkenes remains largely unexplored. Herein, we disclose -a desymmetric dicarbofunctionalization of 1,6-dienes via a nickel-catalyzed reductive cross-coupling reaction. The leverage of the underdeveloped chiral 8-Quinox enables the Ni-catalyzed desymmetric carbamoylalkylation of both unactivated mono- and disubstituted alkenes to form pyrrolidinone bearing two nonadjacent stereogenic centers in high enantio- and stereoselectivitives with broad functional-group tolerance. The synthetic application of pyrrolidinones allows the rapid access to complex chiral fused-heterocycles.
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Affiliation(s)
- Xianqing Wu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Baixue Luan
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Wenyu Zhao
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Feng He
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Xin-Yan Wu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Jingping Qu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
| | - Yifeng Chen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Feringa Nobel Prize Scientist Joint Research Center, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China
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22
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Wang DC, Wu PP, Du PY, Qu GR, Guo HM. Highly Diastereoselective Synthesis of Oxindoles Containing Vicinal Quaternary and Tertiary Stereocenters by a Domino Heck/Decarboxylative Alkynylation Sequence. Org Lett 2022; 24:4212-4217. [PMID: 35666666 DOI: 10.1021/acs.orglett.2c01517] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A palladium-catalyzed domino Heck/decarboxylative alkynylation reaction of trisubstituted alkenes or enamines is reported. For two different types of substrates, the current domino reaction employing different solvents and bases led to 3,3-disubstituted oxindoles and hydropyrimidinyl spirooxindoles containing vicinal quaternary and tertiary stereocenters in moderate to good yields, respectively. The general applicability of this method was shown by gram-scale syntheses and diverse transformations of the reaction products. The enantioselective version for this domino process was also studied.
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Affiliation(s)
- Dong-Chao Wang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Pan-Pan Wu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Pei-Yu Du
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Gui-Rong Qu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Hai-Ming Guo
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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23
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Zhang J, Luo W, Zhang LM, Zhang ZM. Design and Synthesis of W‐Phos and Application in Copper‐Catalyzed Enantioselective Addition of Linear Grignard Reagents to Ketones. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Junliang Zhang
- Fudan University Department of Chemistry 200062 Shanghai CHINA
| | - Wenjun Luo
- Fudan University Department of Chemistry CHINA
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24
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Wu X, Luan B, Zhao W, He F, Wu X, Qu J, Chen Y. Catalytic Desymmetric Dicarbofunctionalization of Unactivated Alkenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202111598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xianqing Wu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Baixue Luan
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Wenyu Zhao
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Feng He
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Xin‐Yan Wu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Jingping Qu
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
| | - Yifeng Chen
- Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science and Technology 130 Meilong Road Shanghai 200237 China
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25
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Du T, Li S, He Y, Long H, Liu X, Li H, Liu L. Copper‐catalyzed [3+2+1] Cycloaddition of Alkenes with Benzoquinones and Dicarbonyl Compounds via Tandem Oxidative Dicarbofunctionalization/cyclization Sequence. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200113] [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)
- Tianxing Du
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100
| | - Song Li
- School of Ocean, Shandong University Weihai 264209
| | - Yunfei He
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100
| | - Huan Long
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100
| | - Xigong Liu
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100
| | - Hai‐Bei Li
- School of Ocean, Shandong University Weihai 264209
| | - Lei Liu
- School of Chemistry and Chemical Engineering, Shandong University Jinan 250100
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26
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Bai X, Zheng W, Ge S, Lu Y. Enantioselective Palladium-Catalyzed Arylborylation/Cyclization of Alkenes to Access Boryl-Functionalized Heterocyclic Compounds Containing Quaternary Stereogenic Centers. Org Lett 2022; 24:3080-3085. [PMID: 35436402 DOI: 10.1021/acs.orglett.2c01082] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Asymmetric palladium-catalyzed arylboration/cyclization of both nonactivated and activated alkenes with B2pin2 was developed. A wide range of N-allyl-o-iodobenzamides and o-iodoacryanilides reacted with B2pin2 to afford borylated 3,4-dihydroisoquinolinones and oxindoles, respectively, in high yields with high enantioselectivities. The synthetic utility of this enantioselective protocol was highlighted by synthesizing various chiral 3,4-dihydroisoquinolinone and oxindole derivatives containing quaternary stereogenic carbon centers, including enantioenriched Roche anticancer agent (S)-RO4999200.
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Affiliation(s)
- Xingfeng Bai
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore
| | - Wenrui Zheng
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore
| | - Shaozhong Ge
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore
| | - Yixin Lu
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore
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27
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Sheikh S, Nasseri MA, Chahkandi M, Reiser O, Allahresani A. Dendritic structured palladium complexes: magnetically retrievable, highly efficient heterogeneous nanocatalyst for Suzuki and Heck cross-coupling reactions. RSC Adv 2022; 12:8833-8840. [PMID: 35424882 PMCID: PMC8985118 DOI: 10.1039/d2ra00487a] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Accepted: 03/08/2022] [Indexed: 11/30/2022] Open
Abstract
The recyclable nanomagnetic Pd-complex PAMAM G0-Pd@γ-Fe2O3 is reported for catalytic C-C cross-coupling reactions of challenging substrates. Mainly, a great variety of aryl chlorides can be used as substrates for Suzuki-Miyaura and Mizoroki-Heck reactions under mild reaction conditions (60-90 °C) and low catalyst loading (<1 mol% Pd) in aqueous media. The presence of numerous polar groups in the polymer matrix increases the solubility of the catalyst in water, thus facilitating its operation in aqueous environments. The immobilization of the catalyst on the surface of a magnetic platform allows its effective recovery and reuse without significant loss of catalytic activity for at least six cycles with total leaching of <1% palladium metal, meeting the requirements for acceptable metal residues in the pharmaceutical industry.
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Affiliation(s)
- Safoora Sheikh
- Department of Chemistry, Faculty of Basic Sciences, University of Birjand P. O. Box 97175-615 Birjand Iran
- Institut für Organische Chemie, Universität Regensburg Universitätsstr. 31 93053 Regensburg German
| | - Mohammad Ali Nasseri
- Department of Chemistry, Faculty of Basic Sciences, University of Birjand P. O. Box 97175-615 Birjand Iran
| | - Mohammad Chahkandi
- Department of Chemistry, Faculty of Basic Sciences, Hakim Sabzevari University P. O. Box 96179-76487 Sabzevar Iran
| | - Oliver Reiser
- Institut für Organische Chemie, Universität Regensburg Universitätsstr. 31 93053 Regensburg German
| | - Ali Allahresani
- Department of Chemistry, Faculty of Basic Sciences, University of Birjand P. O. Box 97175-615 Birjand Iran
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28
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Morla JR, Nareddula DR. Synthesis of dihydroisoquinolinone-4-methylboronic esters via domino Heck/borylation using a structurally characterized palladacycle as a catalyst. RSC Adv 2022; 12:6762-6771. [PMID: 35424619 PMCID: PMC8982083 DOI: 10.1039/d2ra00389a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 02/14/2022] [Indexed: 11/21/2022] Open
Abstract
Synthesis of dihydroisoquinolinone-4-methylboronic esters from N-allylcarboxamides and B2(Pin)2via domino Heck/borylation approach is reported. A quinoxaline-based NHC-palladacycle [Pd(C∧C:)PPh3Cl], which has been structurally characterized, is used as a catalyst. The scope of the substrate with a wide range of substituents is explored. In addition to the synthesis of title compounds, a few examples of methylboronic esters of indoline and benzofuran motifs have also been prepared using the same protocol. Synthesis of dihydroisoquinolinone-4-methylboronic esters from N-allylcarboxamides and B2(Pin)2via domino Heck/borylation has been achieved by using a quinoxaline-based NHC-palladacycle [Pd(C∧C:)PPh3Cl].![]()
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Affiliation(s)
- Jhansi Rani Morla
- Department of Chemistry, Pondicherry University Pondicherry 605014 India
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29
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Li X, Chen P, Liu G. Palladium-catalyzed intermolecular alkynylcarbonylation of unactivated alkenes: easy access to β-alkynylcarboxylic esters. Chem Commun (Camb) 2022; 58:2544-2547. [PMID: 35099483 DOI: 10.1039/d1cc07092d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A palladium-catalyzed intermolecular alkynylcarbonylation of unactivated alkenes has been established with ethynyl benziodoxolones (EBXs) as alkynylation reagents, providing β-alkynylcarboxylic esters efficiently from simple alkenes. The reaction features moderate to excellent regioselectivity and excellent functional group compatibility under mild reaction conditions.
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Affiliation(s)
- Xiang Li
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, 200032, China.
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30
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Wu Y, Wu L, Zhang ZM, Xu B, Liu Y, Zhang J. Enantioselective difunctionalization of alkenes by a palladium-catalyzed Heck/borylation sequence. Chem Sci 2022; 13:2021-2025. [PMID: 35308863 PMCID: PMC8848999 DOI: 10.1039/d1sc06229h] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/20/2022] [Indexed: 01/26/2023] Open
Abstract
A palladium catalyzed enantioselective Heck/borylation reaction of alkene-tethered aryl iodides was realized, delivering a variety of 2,3-dihydrobenzofuranyl boronic esters in high yield with excellent enantioselectivity. Asymmetric synthesis of chromane boronic ester, indane boronic ester and indoline boronic ester was also accomplished. The protocol offers an efficient access to the corresponding chiral benzocyclic boronic esters, which are notably important chemical motifs in synthetic transformations. A palladium catalyzed enantioselective Heck/borylation reaction of alkene-tethered aryl iodides was realized, delivering a variety of 2,3-dihydrobenzofuranyl boronic esters in high yield with excellent enantioselectivity.![]()
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Affiliation(s)
- Yuanqi Wu
- Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology Changchun 130012 P. R. China
| | - Lizuo Wu
- Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology Changchun 130012 P. R. China
| | - Zhan-Ming Zhang
- Department of Chemistry, Fudan University 2005 Songhu Road Shanghai 200438 P. R. China
| | - Bing Xu
- Department of Chemistry, Fudan University 2005 Songhu Road Shanghai 200438 P. R. China
| | - Yu Liu
- Jilin Provincial Key Laboratory of Carbon Fiber Development and Application, College of Chemistry and Life Science, Advanced Institute of Materials Science, Changchun University of Technology Changchun 130012 P. R. China
| | - Junliang Zhang
- Department of Chemistry, Fudan University 2005 Songhu Road Shanghai 200438 P. R. China
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31
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Chen M, Xu XX, Wang X, Ren ZH, Guan ZH. endo-5-Norbornene-2,3-dimethanol-promoted asymmetric Heck/Suzuki cascade reaction of N-(2-bromophenyl)acrylamides. Org Chem Front 2022. [DOI: 10.1039/d2qo00998f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An endo-5-norbornene-2,3-dimethanol-promoted highly enantioselective palladium-catalyzed Heck/Suzuki cascade reaction of N-(2-bromophenyl)acrylamides has been developed.
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Affiliation(s)
- Ming Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory for Carbon Neutral Technology, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Xing-Xing Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory for Carbon Neutral Technology, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Xucai Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory for Carbon Neutral Technology, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Zhi-Hui Ren
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory for Carbon Neutral Technology, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Zheng-Hui Guan
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory for Carbon Neutral Technology, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P.R. China
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32
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33
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Zhou PX, Yang X, Du X, Zhao S, Wang H, Li X, Liu N, Tan X, Ren F, Liang YM. Palladium-catalyzed Heck cyclization/allylation with homoallyl alcohols via retro-allylation. Org Chem Front 2022. [DOI: 10.1039/d2qo00655c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-catalyzed reaction of aryl iodide-tethered alkenes with homoallyl alcohols is reported, providing a convenient and efficient approach to C(sp3)–allylation products.
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Affiliation(s)
- Ping-Xin Zhou
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Xiaozhe Yang
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Xueyan Du
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Shujie Zhao
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Han Wang
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Xinguang Li
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Ning Liu
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Xinqiang Tan
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
| | - Feng Ren
- School of Basic Medical Sciences, Xinxiang Medical University, Xinxiang, China
- Henan International Joint Laboratory of Immunity and Targeted Therapy for liver-intestinal Tumors, Xinxiang Medical University, Xinxiang, China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, China
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34
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Chi X, Xia T, Yang Y, Cao T, Zhang D, Liu H. Highly Diastereoselective Synthesis of Octahydro-1H-cyclpenta[c]pyridine Skeleton via Pd/Au-Relay Catalyzed Cascade Reaction of (Z)-1-Iodo-1,6-diene and Alkyne. Org Chem Front 2022. [DOI: 10.1039/d2qo00233g] [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
The Octahydro-1H-cyclopenta[c]pyridine Skeletons exist in a broad spectrum of bioactive natural products, and the development of efficient and convenient protocols to construct this skeleton remains a challenging task. Herein, we...
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35
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Han XQ, Wang L, Yang P, Liu JY, Xu WY, Zheng C, Liang RX, You SL, Zhang J, Jia YX. Enantioselective Dearomative Mizoroki–Heck Reaction of Naphthalenes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c05008] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiao-Qing Han
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road No. 18, Hangzhou 310014, China
| | - Lei Wang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Ping Yang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Jing-Yuan Liu
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road No. 18, Hangzhou 310014, China
| | - Wei-Yan Xu
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road No. 18, Hangzhou 310014, China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Ren-Xiao Liang
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road No. 18, Hangzhou 310014, China
| | - Shu-Li You
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, China
| | - Yi-Xia Jia
- College of Chemical Engineering, State Key Laboratory Breeding Base of Green-Chemical Synthesis Technology, Zhejiang University of Technology, Chaowang Road No. 18, Hangzhou 310014, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
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36
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Yang B, Yang J, Zhang J. Synthesis of Axially Chiral Anilides Enabled by a Palladium/
Ming‐Phos‐Catalyzed
Desymmetric Sonogashira Reaction. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100621] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Bin Yang
- Department of Chemistry, Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junfeng Yang
- Department of Chemistry, Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junliang Zhang
- Department of Chemistry, Fudan University 2005 Songhu Road Shanghai 200438 China
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37
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Cao K, Zhang ZM, Zhang J, Chen F. Palladium-Catalyzed Asymmetric Cross-Coupling Reactions of Cyclobutanols and Unactivated Olefins. Org Lett 2021; 23:9520-9525. [PMID: 34851121 DOI: 10.1021/acs.orglett.1c03739] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Transition-metal-catalyzed activations of carbon-carbons bonds of small strained rings have widespread applications in synthetic and medicinal chemistry. However, coupling reactions of cyclobutanols involving β-carbon elimination to construct C(sp3)-C(sp3) bonds have scarcely been developed. Here, we demonstrate a highly enantioselective Pd-catalyzed intermolecular C(sp3)-C(sp3) coupling reaction of a broad range of cyclobutanol derivatives and unactivated alkenes, allowing convenient access to a series of chiral benzene-fused cyclic compounds in a highly regio-, chemo-, and enantioselective manner.
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Affiliation(s)
- Kangning Cao
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Zhan-Ming Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Fener Chen
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
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38
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Zhao G, Wu Y, Wu HH, Yang J, Zhang J. Pd/GF-Phos-Catalyzed Asymmetric Three-Component Coupling Reaction to Access Chiral Diarylmethyl Alkynes. J Am Chem Soc 2021; 143:17983-17988. [PMID: 34699199 DOI: 10.1021/jacs.1c09742] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Significant attention has been given in the past few years to the selective transformations of N-tosylhydrazones to various useful compounds. However, the development of enantioselective versions poses considerable challenges. Herein we report a Pd-catalyzed enantioselective three-component coupling of N-tosylhydrazone, aryl halide, and terminal alkyne under mild conditions utilizing a novel chiral sulfinamide phosphine ligand (GF-Phos), which provides a facile access to chiral diarylmethyl alkynes, which are useful synthons in organic synthesis as well as exist as the skeleton in many bioactive molecules. A pair of enantiomers of the product could be easily prepared using the same chiral ligand by simply changing the aryl substituents of the N-tosylhydrazone and aryl halide. The salient features of this reaction include the readily available starting materials, general substrate scope, high enantioselectivity, ease of scale-up, mild reaction conditions, and versatile transformations.
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Affiliation(s)
- Guofeng Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, People's Republic of China
| | - Yi Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, People's Republic of China
| | - Hai-Hong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, People's Republic of China
| | - Junfeng Yang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, People's Republic of China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, People's Republic of China.,Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, People's Republic of China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, People's Republic of China
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39
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Li H, Huang W, Yang K, Ye F, Yin G, Xu Z, Xu L. Asymmetric Disilylation of Spirocyclic Palladacyclopentanes via Tandem Heck/C−H Activation of Aryl Iodides. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Hang Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 P. R. China
| | - Wei‐Sheng Huang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 P. R. China
| | - Ke‐Fang Yang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 P. R. China
| | - Fei Ye
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 P. R. China
| | - Guan‐Wu Yin
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 P. R. China
| | - Zheng Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 P. R. China
| | - Li‐Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education Laboratory of Organosilicon Material Technology of Zhejiang Province College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou 311121 P. R. China
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40
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Li S, Chen Q, Zhang ZM, Zhang J. Pd-catalyzed enantioselective intramolecular Heck reaction to access disubstituted dihydroisoquinolinone with a terminal olefin. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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41
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Li S, Chen Q, Xie X, Yang J, Zhang J. Pd-Catalyzed Enantioselective Dearomative Allylic Annulation to Access PPAPs Analogues. Org Lett 2021; 23:7824-7828. [PMID: 34570520 DOI: 10.1021/acs.orglett.1c02842] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polycyclic polyprenylated acylphloroglucinols (PPAPs) share a common bicyclo[3.3.1]alkenone core structure and attract numerous attention from synthetic organic chemists due to their fascinating biological properties and associated synthetic challenges. We present herein that Pd-phosphoramidite catalysts promote the enantioselective dearomative allylic annulation reaction between allyl desoxyhumulones and allylic dicarbonates, affording PPAPs analogues in good yields and enantioselectivities. The reaction likely proceeds through two-step dearomative allylation by Pd, and the C-allylation pathway is the dominant mechanistic model.
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Affiliation(s)
- Sanliang Li
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Qiaoyu Chen
- Academy for Engineering and Technology, Fudan University, Shanghai 200438, China
| | - Xiaoxiao Xie
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China
| | - Junfeng Yang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China.,Zhuhai Fudan Innovation Institute, Zhuhai 519000, China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, China.,Zhuhai Fudan Innovation Institute, Zhuhai 519000, China
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42
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Zhang D, Xiong Y, Guo Y, Zhang L, Wang Z, Ding K. Palladium-Catalyzed Enantioselective Intramolecular Heck Carbonylation Reactions: Asymmetric Synthesis of 2-Oxindole Ynones and Carboxylic Acids. Chemistry 2021; 28:e202103670. [PMID: 34643304 DOI: 10.1002/chem.202103670] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Indexed: 12/28/2022]
Abstract
Herein, we report a Pd-catalyzed enantioselective domino Heck carbonylation reaction of o-iodoacrylanilides with terminal alkynes and water as the nucleophiles, affording a diversity of β-carbonylated 2-oxindole derivatives bearing a 3,3-disubstituted all-carbon quaternary stereocenter, in high yields (55-99 %) with good to excellent enantioselectivities (up to 99 % ee). The synthetic utilities of the protocol were demonstrated in the gram-scale synthesis of 2-oxindole-derived ynone 3 ea and carboxylic acid 4 a, as well as the facile synthesis of chiral 2-oxindoles with a pyrazole or isoxazole moiety.
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Affiliation(s)
- Di Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Youyuan Xiong
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Yingjie Guo
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Lei Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Zheng Wang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Kuiling Ding
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China.,University of Chinese Academy of Sciences, Beijing 100049 (P. R. China), Frontiers Science Center for Transformative Molecules, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, P. R. China
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43
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Dhungana RK, Sapkota RR, Wickham LM, Niroula D, Shrestha B, Giri R. Ni‐Catalyzed Arylbenzylation of Alkenylarenes: Kinetic Studies Reveal Autocatalysis by ZnX
2
**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202110459] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Roshan K. Dhungana
- Department of Chemistry Pennsylvania State University University Park Pennsylvania 16802 USA
| | - Rishi R. Sapkota
- Department of Chemistry Pennsylvania State University University Park Pennsylvania 16802 USA
| | - Laura M. Wickham
- Department of Chemistry Pennsylvania State University University Park Pennsylvania 16802 USA
| | - Doleshwar Niroula
- Department of Chemistry Pennsylvania State University University Park Pennsylvania 16802 USA
| | - Bijay Shrestha
- Current address: Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA
| | - Ramesh Giri
- Department of Chemistry Pennsylvania State University University Park Pennsylvania 16802 USA
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44
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Dhungana RK, Sapkota RR, Wickham LM, Niroula D, Shrestha B, Giri R. Ni-Catalyzed Arylbenzylation of Alkenylarenes: Kinetic Studies Reveal Autocatalysis by ZnX 2 *. Angew Chem Int Ed Engl 2021; 60:22977-22982. [PMID: 34427992 PMCID: PMC8490319 DOI: 10.1002/anie.202110459] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Indexed: 11/08/2022]
Abstract
We report a Ni-catalyzed regioselective arylbenzylation of alkenylarenes with benzyl halides and arylzinc reagents. The reaction furnishes differently substituted 1,1,3-triarylpropyl structures that are reminiscent of the cores of oligoresveratrol natural products. The reaction is also compatible for the coupling of internal alkenes, secondary benzyl halides and variously substituted arylzinc reagents. Kinetic studies reveal that the reaction proceeds with a rate-limiting single-electron-transfer process and is autocatalyzed by in-situ-generated ZnX2 . The reaction rate is amplified by a factor of three through autocatalysis upon addition of ZnX2 .
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Affiliation(s)
| | | | | | | | | | - Ramesh Giri
- Department of Chemistry Pennsylvania State University, University Park, Pennsylvania 16802, USA
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45
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Wu Y, Xu B, Zhao G, Pan Z, Zhang Z, Zhang J. Palladium/
Xu‐Phos
Catalyzed Enantioselective Tandem Heck/Cacchi Reaction of Unactivated Alkenes. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100538] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yi Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University, 3663 N. Zhongshan Road Shanghai 200062 China
| | - Bing Xu
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Guofeng Zhao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University, 3663 N. Zhongshan Road Shanghai 200062 China
| | - Zhangjin Pan
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University, 3663 N. Zhongshan Road Shanghai 200062 China
| | - Zhan‐Ming Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University, 3663 N. Zhongshan Road Shanghai 200062 China
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes School of Chemistry and Molecular Engineering East China Normal University, 3663 N. Zhongshan Road Shanghai 200062 China
- Department of Chemistry Fudan University 2005 Songhu Road Shanghai 200438 China
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46
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Wickham LM, Giri R. Transition Metal (Ni, Cu, Pd)-Catalyzed Alkene Dicarbofunctionalization Reactions. Acc Chem Res 2021; 54:3415-3437. [PMID: 34383469 DOI: 10.1021/acs.accounts.1c00329] [Citation(s) in RCA: 113] [Impact Index Per Article: 37.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Recently, alkene dicarbofunctionalization, i.e., the powerful organic synthesis method of alkene difunctionalization with two carbon sources, emerged as a formidable reaction with immense promise to synthesize complex molecules expeditiously from simple chemicals. This reaction is generally achieved with transition metals (TMs) through interception by carbon sources of an alkylmetal [β-H-C(sp3)-[M]] species, a key intermediate prone to undergo rapid β-H elimination. Related prior reports, since Paolo Chiusoli and Catellani's work in 1982 [ Tetrahedron Lett. 1982, 23, 4517], have used bicyclic and disubstituted terminal alkenes, wherein β-H elimination is avoided by geometric restriction or complete lack of β-H's. With reasoning that β-H-C(sp3)-[M] intermediates could be rendered amenable to interception with the use of first row late TMs and formation of coordination-assisted transient metallacycles, these two strategies were implemented to address the β-H elimination problem in alkene dicarbofunctionalization reactions.Because first row late TMs catalyze C(sp3)-C(sp3) coupling, Cu and Ni were anticipated to impart sufficient stability to β-H-C(sp3)-[M] intermediates, generated catalytically upon alkene carbometalation, for their subsequent interception by carbon electrophiles/nucleophiles in three-component reactions. Additionally, such an innate property could enable alkene difunctionalization with carbon coupling partners through entropically driven cyclization/coupling reactions. The cyclometalation concept to stabilize intractable β-H-C(sp3)-[M] intermediates was hypothesized when three-component reactions were performed. The idea of cyclometalation to curtail β-H elimination is founded upon Whitesides's [ J. Am. Chem. Soc. 1976, 98, 6521] observation that metallacycles undergo β-H elimination much slower than acyclic alkylmetals.In this Account, examples of alkene dicarbofunctionalization reactions demonstrate that Cu and Ni catalysts could enable cyclization/coupling of alkenylzinc reagents, alkyl halides, and aryl halides to afford complex carbo- and heterocycles. In addition, forming coordination-assisted transient nickellacycles enabled regioselective performance of three-component dicarbofunctionalization of various alkenyl compounds. In situ reaction of [M]-H with alkenes generated after β-H elimination induced an unprecedented metallacycle contraction process, in which six-membered metal-containing rings shrank to five-membered cycles, allowing creation of new carbon-carbon bonds at allylic (1,3) positions. Applications of these regioselective alkene dicarbofunctionalization reactions are discussed.
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Affiliation(s)
- Laura M. Wickham
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Ramesh Giri
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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47
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Whyte A, Bajohr J, Arora R, Torelli A, Lautens M. Sequential Pd
0
‐ and Pd
II
‐Catalyzed Cyclizations: Enantioselective Heck and Nucleopalladation Reactions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Andrew Whyte
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Jonathan Bajohr
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Ramon Arora
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Alexa Torelli
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
| | - Mark Lautens
- Department of Chemistry University of Toronto 80 St. George Street Toronto Ontario M5S 3H6 Canada
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48
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Dhungana RK, Aryal V, Niroula D, Sapkota RR, Lakomy MG, Giri R. Nickel‐Catalyzed Regioselective Alkenylarylation of γ,δ‐Alkenyl Ketones via Carbonyl Coordination. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202104871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Roshan K. Dhungana
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
| | - Vivek Aryal
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
| | - Doleshwar Niroula
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
| | - Rishi R. Sapkota
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
| | - Margaret G. Lakomy
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
| | - Ramesh Giri
- Department of Chemistry Pennsylvania State University University Park PA 16802 USA
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49
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Dhungana RK, Aryal V, Niroula D, Sapkota RR, Lakomy MG, Giri R. Nickel-Catalyzed Regioselective Alkenylarylation of γ,δ-Alkenyl Ketones via Carbonyl Coordination. Angew Chem Int Ed Engl 2021; 60:19092-19096. [PMID: 34115911 PMCID: PMC8373804 DOI: 10.1002/anie.202104871] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 05/27/2021] [Indexed: 11/07/2022]
Abstract
We disclose a nickel-catalyzed reaction, which enabled us to difunctionalize unactivated γ,δ-alkenes in ketones with alkenyl triflates and arylboronic esters. The reaction was made feasible by the use of 5-chloro-8-hydroxyquinoline as a ligand along with NiBr2 ⋅DME as a catalyst and LiOtBu as base. The reaction proceeded with a wide range of cyclic, acyclic, endocyclic and exocyclic alkenyl ketones, and electron-rich and electron-deficient arylboronate esters. The reaction also worked with both cyclic and acyclic alkenyl triflates. Control experiments indicate that carbonyl coordination is required for the reaction to proceed.
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Affiliation(s)
- Roshan K. Dhungana
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Vivek Aryal
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Doleshwar Niroula
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Rishi R. Sapkota
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Margaret G. Lakomy
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Ramesh Giri
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, USA
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50
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Li YL, Zhang PC, Wu HH, Zhang J. Palladium-Catalyzed Asymmetric Tandem Denitrogenative Heck/Tsuji-Trost of Benzotriazoles with 1,3-Dienes. J Am Chem Soc 2021; 143:13010-13015. [PMID: 34402615 DOI: 10.1021/jacs.1c07212] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The asymmetric denitrogenative cycloaddition has emerged as a powerful tool to build chiral aza-heterocyles. However, only one example of asymmetric denitrogenative cycloaddition of benzotriazole with unsaturated hydrocarbons has been explored so far, because the ring-opening of benzotriazole to generate α-imino metal carbenoid species is a thermodynamically unfavorable process. We herein report an efficient asymmetric denitrogenative cycloaddition of benzotriazoles with cyclic and acyclic 1,3-dienes enabled by Pd and chiral sulfonamide phosphine ligand. A variety of substituted hexahydrocarbazoles and indolines were delivered in good yields with high ee values. Interestingly, a pair of enantiomers could be obtained with the use of Xu1 and PC2 with the same absolute configuration. The synthetic utilities of the optically active hexahydrocarbazoles were also showcased.
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Affiliation(s)
- Yin-Lin Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Pei-Chao Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Hai-Hong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China.,Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
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