101
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Affiliation(s)
- Shihua Song
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University Hangzhou Zhejiang 310027 China
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University Hangzhou Zhejiang 310027 China
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102
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Yuan Y, Zhang X, Qian H, Ma S. Catalytic enantioselective allene-anhydride approach to β,γ-unsaturated enones bearing an α-all-carbon-quarternary center. Chem Sci 2020; 11:9115-9121. [PMID: 34094192 PMCID: PMC8161143 DOI: 10.1039/d0sc03227a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A protocol of highly regio- and enantioselective copper-catalyzed hydroacylation of the non-terminal C[double bond, length as m-dash]C bond in 1,1-disubstituted terminal allenes with anhydrides has been developed. Both aromatic and aliphatic carboxylic anhydrides are applicable to the efficient construction of all carbon quarternary centers connected with a versatile C[double bond, length as m-dash]C bond and a useful ketone functionality. The synthetic potentials of the enantioenriched products have also been demonstrated. Density functional theory (DFT) calculations were performed to explain the steric outcome of the products: the hydroacylation proceeds through a six-membered transition state and the ligand-substrate steric interactions account for the observed enantioselectivity although the chiral ligand is far away from the to-be-genetated chiral center.
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Affiliation(s)
- Yuan Yuan
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| | - Xue Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032 P. R. China
| | - Hui Qian
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 P. R. China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University 220 Handan Lu Shanghai 200433 P. R. China .,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032 P. R. China
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103
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Li QH, Jiang X, Wu K, Luo RQ, Liang M, Zhang ZH, Huang ZY. Research Progress on the Catalytic Enantioselective Synthesis of Axially Chiral Allenes by Chiral Organocatalysts. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824666200306094427] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Chiral allenes are important structural scaffolds found in many natural products
and drugs, and in addition, they also serve as building blocks for many organic transformations.
The conventional methods for preparing chiral allenes rely on the resolution of
racemic allenes and the chirality transfer between non-racemic propargylic derivatives and
nucleophilic reagents. In recent years, the synthesis of chiral allenes by asymmetric catalysis
has been achieved fruitful results. Among them, enantioselective synthesis of chiral
allenes with chiral organic catalysts is particularly prominent. In this paper, the research
progress of enantioselective synthesis of chiral allenes catalyzed by chiral organic catalysts
in recent years is reviewed, including various reaction systems and synthesis applications.
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Affiliation(s)
- Qing Han Li
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, China
| | - Xin Jiang
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, China
| | - Kun Wu
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, China
| | - Rui Qiang Luo
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, China
| | - Meng Liang
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, China
| | - Zhi Hao Zhang
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, China
| | - Zhe Yao Huang
- College of Chemistry and Environmental Protection Engineering, Southwest Minzu University, Chengdu, China
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104
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Wang H, Luo H, Zhang ZM, Zheng WF, Yin Y, Qian H, Zhang J, Ma S. Pd-Catalyzed Enantioselective Syntheses of Trisubstituted Allenes via Coupling of Propargylic Benzoates with Organoboronic Acids. J Am Chem Soc 2020; 142:9763-9771. [DOI: 10.1021/jacs.0c02876] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Huanan Wang
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, PR China
| | - Hongwen Luo
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, PR China
| | - Zhan-Ming Zhang
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, PR China
| | - Wei-Feng Zheng
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, PR China
| | - Yu Yin
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, PR China
| | - Hui Qian
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, PR China
| | - Junliang Zhang
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, PR China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, PR China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu, Shanghai 200433, PR China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, PR China
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105
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Xu X, Dong S, Feng L, Wang S, Liu X, Feng X. Kinetic Resolution of Propargylic Ethers via [2,3]-Wittig Rearrangement to Synthesize Chiral α-Hydroxyallenes. Org Lett 2020; 22:2692-2696. [PMID: 32166950 DOI: 10.1021/acs.orglett.0c00649] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient kinetic resolution of propargyloxy dicarbonyl compounds via asymmetric [2,3]-Wittig rearrangement was achieved by using a chiral N,N'-dioxide/NiII complex catalyst. Various chiral α-allenyl alcohols were obtained in high enantioselectivities under mild conditions. The utility of this method was readily demonstrated in the asymmetric synthesis of the chiral 2,5-dihydrofuran derivative.
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Affiliation(s)
- Xi Xu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Shunxi Dong
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - LiLi Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Sijing Wang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China
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106
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Qin A, Qian H, Chen Q, Ma S. Palladium‐Catalyzed Coupling of Propargylic Alcohols with Boronic Acids under Ambient Conditions. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900442] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Anni Qin
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu Shanghai 200433 China
| | - Hui Qian
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu Shanghai 200433 China
| | - Qin Chen
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu Shanghai 200433 China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry, Fudan University, 220 Handan Lu Shanghai 200433 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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107
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Mancinelli M, Bencivenni G, Pecorari D, Mazzanti A. Stereochemistry and Recent Applications of Axially Chiral Organic Molecules. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901918] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Michele Mancinelli
- Department of Industrial Chemistry “Toso Montanari” University of Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Giorgio Bencivenni
- Department of Industrial Chemistry “Toso Montanari” University of Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Daniel Pecorari
- Department of Industrial Chemistry “Toso Montanari” University of Bologna Viale Risorgimento 4 40136 Bologna Italy
| | - Andrea Mazzanti
- Department of Industrial Chemistry “Toso Montanari” University of Bologna Viale Risorgimento 4 40136 Bologna Italy
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108
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Mateos-Gil J, Mondal A, Castiñeira Reis M, Feringa BL. Synthesis and Functionalization of Allenes by Direct Pd-Catalyzed Organolithium Cross-Coupling. Angew Chem Int Ed Engl 2020; 59:7823-7829. [PMID: 32078230 DOI: 10.1002/anie.201913132] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/30/2020] [Indexed: 02/06/2023]
Abstract
A palladium-catalyzed cross-coupling between in situ generated allenyl/propargyl-lithium species and aryl bromides to yield highly functionalized allenes is reported. The direct and selective formation of allenic products preventing the corresponding isomeric propargylic product is accomplished by the choice of SPhos or XPhos based Pd catalysts. The methodology avoids the prior transmetalation to other transition metals or reverse approaches that required prefunctionalization of substrates with leaving groups, resulting in a fast and efficient approach for the synthesis of tri- and tetrasubstituted allenes. Experimental and theoretical studies on the mechanism show catalyst control of selectivity in this allene formation.
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Affiliation(s)
- Jaime Mateos-Gil
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Anirban Mondal
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Marta Castiñeira Reis
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
| | - Ben L Feringa
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands
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109
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Mateos‐Gil J, Mondal A, Castiñeira Reis M, Feringa BL. Synthesis and Functionalization of Allenes by Direct Pd‐Catalyzed Organolithium Cross‐Coupling. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201913132] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jaime Mateos‐Gil
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
| | - Anirban Mondal
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
| | - Marta Castiñeira Reis
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
| | - Ben L. Feringa
- Stratingh Institute for Chemistry University of Groningen Nijenborgh 4 9747AG Groningen The Netherlands
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110
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Yang J, Wang Z, He Z, Li G, Hong L, Sun W, Wang R. Organocatalytic Enantioselective Synthesis of Tetrasubstituted α‐Amino Allenoates by Dearomative γ‐Addition of 2,3‐Disubstituted Indoles to β,γ‐Alkynyl‐α‐imino Esters. Angew Chem Int Ed Engl 2020; 59:642-647. [PMID: 31664758 DOI: 10.1002/anie.201911420] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/28/2019] [Indexed: 12/16/2022]
Affiliation(s)
- Junxian Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu ProvinceInstitute of Drug Design & SynthesisInstitute of PharmacologySchool of Basic Medical SciencesLanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Zheng Wang
- Guangdong Key Lab of Nano-Micro Material ResearchSchool of Chemical Biology and BiotechnologyPeking University Shenzhen Graduate School Shenzhen 518055 China
| | - Zeyuan He
- Key Laboratory of Preclinical Study for New Drugs of Gansu ProvinceInstitute of Drug Design & SynthesisInstitute of PharmacologySchool of Basic Medical SciencesLanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Guofeng Li
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 P. R. China
| | - Liang Hong
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 P. R. China
| | - Wangsheng Sun
- Key Laboratory of Preclinical Study for New Drugs of Gansu ProvinceInstitute of Drug Design & SynthesisInstitute of PharmacologySchool of Basic Medical SciencesLanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu ProvinceInstitute of Drug Design & SynthesisInstitute of PharmacologySchool of Basic Medical SciencesLanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
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111
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Skotnitzki J, Kremsmair A, Keefer D, Schüppel F, Le Cacher de Bonneville B, de Vivie-Riedle R, Knochel P. Regio- and diastereoselective reactions of chiral secondary alkylcopper reagents with propargylic phosphates: preparation of chiral allenes. Chem Sci 2020; 11:5328-5332. [PMID: 34122991 PMCID: PMC8159386 DOI: 10.1039/c9sc05982b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The diastereoselective SN2′-substitution of secondary alkylcopper reagents with propargylic phosphates enables the preparation of stereodefined alkylallenes. By using enantiomerically enriched alkylcopper reagents and enantioenriched propargylic phosphates as electrophiles anti-SN2′-substitutions were performend leading to α-chiral allenes in good yields with excellent regioselectivity and retention of configuration. DFT-calculations were performed to rationalize the structure of these alkylcopper reagents in various solvents, emphasizing their configurational stability in THF. The diastereoselective SN2′-substitution of secondary alkylcopper reagents with propargylic phosphates enables the preparation of stereodefined alkylallenes.![]()
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Affiliation(s)
- Juri Skotnitzki
- Department of Chemistry
- Ludwig-Maximilians-Universitaet
- 81377 München
- Germany
| | | | - Daniel Keefer
- Department of Chemistry
- Ludwig-Maximilians-Universitaet
- 81377 München
- Germany
| | - Franziska Schüppel
- Department of Chemistry
- Ludwig-Maximilians-Universitaet
- 81377 München
- Germany
| | | | | | - Paul Knochel
- Department of Chemistry
- Ludwig-Maximilians-Universitaet
- 81377 München
- Germany
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112
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Yao Y, Zhang X, Ma S. DFT study on the E-stereoselective reductive A3-coupling reaction of terminal alkynes with aldehydes and 3-pyrroline. Org Chem Front 2020. [DOI: 10.1039/d0qo00564a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The mechanism of the Cu(i)-catalyzed reductive A3-coupling reaction of terminal alkynes with aldehydes and 3-pyrroline for the synthesis of E-allylic amines has been studied by DFT calculations.
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Affiliation(s)
- Yuan Yao
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Xue Zhang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
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113
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Bao X, Ren J, Yang Y, Ye X, Wang B, Wang H. 2-Activated 1,3-enynes in enantioselective synthesis. Org Biomol Chem 2020; 18:7977-7986. [PMID: 32996970 DOI: 10.1039/d0ob01614d] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The rapid enantioselective synthesis of valuable building blocks and pharmaceutically important compounds from easily accessible precursors is one of the major areas of focus in organic chemistry. In this context, 2-activated 1,3-enyne has emerged as a powerful synthon in recent years for the efficient synthesis of enantioenriched furans, allenes, 4-H-pyrans, and 4-isoxazolines, which are privileged scaffolds in bioactive compounds and natural products. This review will cover the history of the development of 2-activated 1,3-enyne in enantioselective synthesis along with the corresponding mechanisms, which may motivate further development in this area to forge more complex and valuable molecules.
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Affiliation(s)
- Xiaoze Bao
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Jinhui Ren
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Yang Yang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Xinyi Ye
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Baomin Wang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 112024, China
| | - Hong Wang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China.
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114
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Liu L, Ward RM, Schomaker JM. Mechanistic Aspects and Synthetic Applications of Radical Additions to Allenes. Chem Rev 2019; 119:12422-12490. [PMID: 31833759 DOI: 10.1021/acs.chemrev.9b00312] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
More than 50 years have passed since Haszeldine reported the first addition of a trifluoromethyl radical to an allene; in the intervening years, both the chemistry of allenes and the reactivity of single-electron species have become topics of intense interest. In this Review, we provide an overview of the fundamentals of radical additions to allenes and highlight the emergence of theoretical and experimental evidence that reveals unique reactivity patterns for radical additions to allenes as compared with other unsaturated compounds. Factors capable of exerting control over the chemo-, regio-, and stereoselectivities of the attack of carbon- and heteroatom-based radicals at each of the three potential reactive sites in an allene substrate are described. These include reaction conditions, the nature of the attacking radical, the substitution pattern of the allene, and the length of the linker between the radical center and the proximal allene carbon in the substrate. Cycloaddition reactions between allenes and partners containing π-bonds, which are likely to proceed through radical pathways, are presented to highlight their ability to rapidly access complex polycyclic scaffolds. Finally, the synthetic utility of the products arising from these chemistries is described, including their applications to the construction of complex molecules.
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Affiliation(s)
- Lu Liu
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Robert M Ward
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
| | - Jennifer M Schomaker
- Department of Chemistry , University of Wisconsin-Madison , 1101 University Avenue , Madison , Wisconsin 53706 , United States
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115
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Zhong F, Xue Q, Yin L. Construction of Chiral 2,3‐Allenols through a Copper(I)‐Catalyzed Asymmetric Direct Alkynylogous Aldol Reaction. Angew Chem Int Ed Engl 2019; 59:1562-1566. [DOI: 10.1002/anie.201912140] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/12/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Feng Zhong
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Qi‐Yan Xue
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Liang Yin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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116
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Fu L, Greßies S, Chen P, Liu G. Recent Advances and Perspectives in Transition Metal‐Catalyzed 1,4‐Functionalizations of Unactivated 1,3‐Enynes for the Synthesis of Allenes. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900277] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Liang Fu
- State Key Laboratory of Organometallic Chemistry, and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular SynthesisShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Steffen Greßies
- State Key Laboratory of Organometallic Chemistry, and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular SynthesisShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Pinhong Chen
- State Key Laboratory of Organometallic Chemistry, and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular SynthesisShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Guosheng Liu
- State Key Laboratory of Organometallic Chemistry, and Shanghai Hongkong Joint Laboratory in Chemical Synthesis, Center for Excellence in Molecular SynthesisShanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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117
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Zhong F, Xue Q, Yin L. Construction of Chiral 2,3‐Allenols through a Copper(I)‐Catalyzed Asymmetric Direct Alkynylogous Aldol Reaction. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912140] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Feng Zhong
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Qi‐Yan Xue
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
| | - Liang Yin
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Road Shanghai 200032 China
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118
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Yang J, Wang Z, He Z, Li G, Hong L, Sun W, Wang R. Organocatalytic Enantioselective Synthesis of Tetrasubstituted α‐Amino Allenoates by Dearomative γ‐Addition of 2,3‐Disubstituted Indoles to β,γ‐Alkynyl‐α‐imino Esters. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911420] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Junxian Yang
- Key Laboratory of Preclinical Study for New Drugs of Gansu ProvinceInstitute of Drug Design & SynthesisInstitute of PharmacologySchool of Basic Medical SciencesLanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Zheng Wang
- Guangdong Key Lab of Nano-Micro Material ResearchSchool of Chemical Biology and BiotechnologyPeking University Shenzhen Graduate School Shenzhen 518055 China
| | - Zeyuan He
- Key Laboratory of Preclinical Study for New Drugs of Gansu ProvinceInstitute of Drug Design & SynthesisInstitute of PharmacologySchool of Basic Medical SciencesLanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Guofeng Li
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 P. R. China
| | - Liang Hong
- School of Pharmaceutical SciencesSun Yat-sen University Guangzhou 510006 P. R. China
| | - Wangsheng Sun
- Key Laboratory of Preclinical Study for New Drugs of Gansu ProvinceInstitute of Drug Design & SynthesisInstitute of PharmacologySchool of Basic Medical SciencesLanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu ProvinceInstitute of Drug Design & SynthesisInstitute of PharmacologySchool of Basic Medical SciencesLanzhou University 199 West Donggang Rd Lanzhou 730000 Gansu P. R. China
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119
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Liu Z, Yang C, Xue Q, Zhao M, Shan C, Xu Y, Loh T. Copper‐Catalyzed Asymmetric Silylation of Propargyl Dichlorides: Access to Enantioenriched Functionalized Allenylsilanes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201908343] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Zheng‐Li Liu
- Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Chao Yang
- Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Qi‐Yan Xue
- Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Meng Zhao
- Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Cui‐Cui Shan
- Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Yun‐He Xu
- Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 China
| | - Teck‐Peng Loh
- Department of ChemistryUniversity of Science and Technology of China Hefei Anhui 230026 China
- Division of Chemistry and Biological ChemistrySchool of Physical and Mathematical SciencesNanyang Technological University 637616 Singapore Singapore
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120
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Liu ZL, Yang C, Xue QY, Zhao M, Shan CC, Xu YH, Loh TP. Copper-Catalyzed Asymmetric Silylation of Propargyl Dichlorides: Access to Enantioenriched Functionalized Allenylsilanes. Angew Chem Int Ed Engl 2019; 58:16538-16542. [PMID: 31532868 PMCID: PMC6899605 DOI: 10.1002/anie.201908343] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/27/2019] [Indexed: 02/04/2023]
Abstract
A copper‐catalyzed silylation of propargyl dichlorides was developed to access chloro‐substituted allenylsilanes under mild reaction conditions. Moreover, enantioenriched chloro‐substituted allenylsilanes can be synthesized in moderate to high yields and good enantioselectivities with this protocol.
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Affiliation(s)
- Zheng-Li Liu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Chao Yang
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Qi-Yan Xue
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Meng Zhao
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Cui-Cui Shan
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Yun-He Xu
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Teck-Peng Loh
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230026, China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 637616, Singapore, Singapore
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121
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Chen M, Qian D, Sun J. Organocatalytic Enantioconvergent Synthesis of Tetrasubstituted Allenes via Asymmetric 1,8-Addition to aza-para-Quinone Methides. Org Lett 2019; 21:8127-8131. [DOI: 10.1021/acs.orglett.9b03224] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Min Chen
- Department of Chemistry and Shenzhen Research Institute, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Deyun Qian
- Department of Chemistry and Shenzhen Research Institute, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
| | - Jianwei Sun
- Department of Chemistry and Shenzhen Research Institute, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong SAR, China
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122
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Lv W, Chen Y, Zhao Z, Wen S, Cheng G. Palladium-Catalyzed Regioselective Heck Coupling of Alkynes with Aryl Iodides for the Synthesis of Trisubstituted Allenes. Org Lett 2019; 21:7795-7798. [DOI: 10.1021/acs.orglett.9b02749] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Weiwei Lv
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Yanhui Chen
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Zemin Zhao
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Si Wen
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
| | - Guolin Cheng
- College of Materials Science & Engineering, Huaqiao University, Xiamen 361021, China
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123
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Zheng Y, Miao B, Qin A, Xiao J, Liu Q, Li G, Zhang L, Zhang F, Guo Y, Ma S. Negishi Coupling for Highly Selective Syntheses of Allenes via Ligand Effect and Mechanistic Study via SAESI‐MS/MS. CHINESE J CHEM 2019. [DOI: 10.1002/cjoc.201900322] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yangguangyan Zheng
- Department of ChemistryFudan University 220 Handan Lu, Shanghai 200433 China
| | - Bukeyan Miao
- Department of ChemistryFudan University 220 Handan Lu, Shanghai 200433 China
| | - Anni Qin
- Department of ChemistryFudan University 220 Handan Lu, Shanghai 200433 China
| | - Junzhe Xiao
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032 China
| | - Qi Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032 China
| | - Gen Li
- Department of ChemistryFudan University 220 Handan Lu, Shanghai 200433 China
| | - Li Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032 China
- National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032 China
| | - Fang Zhang
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032 China
- National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032 China
| | - Yinlong Guo
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032 China
- National Center for Organic Mass Spectrometry in Shanghai, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences 345 Lingling Lu, Shanghai 200032 China
| | - Shengming Ma
- Department of ChemistryFudan University 220 Handan Lu, Shanghai 200433 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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124
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Zhang L, Han Y, Huang A, Zhang P, Li P, Li W. Organocatalytic Remote Stereocontrolled 1,8-Additions of Thiazolones to Propargylic Aza- p-quinone Methides. Org Lett 2019; 21:7415-7419. [PMID: 31486650 DOI: 10.1021/acs.orglett.9b02726] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A remote stereocontrolled 1,8-conjugate addition of thiazolones to propargylic aza-p-quinone methides formed from propargylic alcohols has been developed with the aid of a chiral phosphoric acid, and this represents the first report on organocatalytic stereocontrolled 1,8-addition of propargylic aza-p-quinone methides. Notably, the remote stereocontrolled activation protocol enables the construction of vicinal sulfur-containing quaternary carbon stereocenters and axially chiral tetrasubstituted allenes and promotes the chemistry of chiral phosphoric acids.
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Affiliation(s)
- Lili Zhang
- Department of Medicinal Chemistry, School of Pharmacy , Qingdao University , Qingdao 266021 , P. R. China
| | - Yuzhe Han
- Department of Chemistry and Shenzhen Key Laboratory of Marine Archaea Geo-Omics , Southern University of Science and Technology , Shenzhen 518055 , P. R. China
| | - Anqi Huang
- Department of Medicinal Chemistry, School of Pharmacy , Qingdao University , Qingdao 266021 , P. R. China
| | - Pei Zhang
- Department of Medicinal Chemistry, School of Pharmacy , Qingdao University , Qingdao 266021 , P. R. China
| | - Pengfei Li
- Department of Chemistry and Shenzhen Key Laboratory of Marine Archaea Geo-Omics , Southern University of Science and Technology , Shenzhen 518055 , P. R. China
| | - Wenjun Li
- Department of Medicinal Chemistry, School of Pharmacy , Qingdao University , Qingdao 266021 , P. R. China
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125
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Qin A, Zhu G, Chen Q, Qian H, Ma S. Palladium‐Catalyzed Desulfitative Cross‐Coupling Reaction of Sodium Sulfinates with Propargylic Carbonates. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900698] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Anni Qin
- Research Center for Molecular Recognition and Synthesis, Department of ChemistryFudan University 220 Handan Lu Shanghai 200433 People's Republic of China
| | - Guirong Zhu
- Research Center for Molecular Recognition and Synthesis, Department of ChemistryFudan University 220 Handan Lu Shanghai 200433 People's Republic of China
| | - Qin Chen
- Research Center for Molecular Recognition and Synthesis, Department of ChemistryFudan University 220 Handan Lu Shanghai 200433 People's Republic of China
| | - Hui Qian
- Research Center for Molecular Recognition and Synthesis, Department of ChemistryFudan University 220 Handan Lu Shanghai 200433 People's Republic of China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis, Department of ChemistryFudan University 220 Handan Lu Shanghai 200433 People's Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic ChemistryChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 People's Republic of China
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126
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Cabrera-Lobera N, Velasco N, Sanz R, Fernández-Rodríguez MA. Brønsted acid−catalyzed synthesis of tetrasubstituted allenes and polysubstituted 2H-chromenes from tertiary propargylic alcohols. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.05.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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127
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Liu N, Yao J, Yin L, Lu T, Tian Z, Dou X. Rhodium-Catalyzed Expeditious Synthesis of Indenes from Propargyl Alcohols and Organoboronic Acids by Selective 1,4-Rhodium Migration over β-Oxygen Elimination. ACS Catal 2019. [DOI: 10.1021/acscatal.9b02024] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Na Liu
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Jian Yao
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Long Yin
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Tao Lu
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Ziqi Tian
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China
| | - Xiaowei Dou
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
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128
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Trost BM, Schultz JE, Chang T, Maduabum MR. Chemo-, Regio-, Diastereo-, and Enantioselective Palladium Allylic Alkylation of 1,3-Dioxaboroles as Synthetic Equivalents of α-Hydroxyketones. J Am Chem Soc 2019; 141:9521-9526. [PMID: 31180647 DOI: 10.1021/jacs.9b04658] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We describe the development of a Pd-catalyzed asymmetric allylic alkylation (Pd-AAA) of acyclic α-hydroxyketones using boronic acids as traceless templates. Condensation of boronic acids with hydroxyketones generates 1,3-dioxaboroles, which can be used directly as pronucleophiles in Pd-AAA reactions. This strategy enables control of the enolate geometry, while removing the issue of O-alkylation. Allylic alcohols can be directly ionized in the presence of Pd(0) and chiral ligands to afford alkylation products with regio- and enantioselectivity. Additionally, a dynamic kinetic asymmetric transformation of allenyl electrophiles affords C-alkylation products in high regio-, diastereo-, and enantioselectivity. To the best of our knowledge, this method represents the first example in Pd-AAA for setting point chirality on a nucleophile simultaneous to stereoinduction on an axial chiral allene.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
| | - Johnathan E Schultz
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
| | - Taiwei Chang
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
| | - Michael R Maduabum
- Department of Chemistry , Stanford University , Stanford , California 94305 , United States
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129
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Abstract
So far, over 150 natural products and pharmaceuticals containing an allene moiety have been identified. During the last two decades, allenes have also been demonstrated as synthetically versatile starting materials in organic synthesis. In comparison to alkenes and alkynes, allenes are unique unsaturated hydrocarbons due to their axial chirality, which could be transformed to central chirality via chirality transfer to provide an irreplaceable entry to chiral molecules. Thus, methods for allene synthesis from readily available chemicals are of great interest. In 1979, Crabbé et al. reported the first CuBr-mediated allenation of terminal alkynes (ATA) reaction to form monosubstituted allenes from 1-alkynes and paraformaldehyde in the presence of diisopropylamine. During the following 30 years, the ATA reactions were limited to paraformaldehyde. This Account describes our efforts toward the development of ATA reactions in the last ten years. First, we improved the yields and scope greatly for the synthesis of monosubstituted allenes by modifying the original Crabbé recipe. Next we developed the ZnI2-promoted or CuI-catalyzed ATA reactions for the synthesis of 1,3-disubstituted allenes from terminal alkyne and normal aldehydes. Furthermore, we first realized the CdI2-promoted ATA reaction of ketones with pyrrolidine as the matched amine for the preparation of trisubstituted allenes. Due to the toxicity of CdI2, we also developed two alternative approaches utilizing CuBr/ZnI2 or CuI/ZnBr2/Ti(OEt)4. The asymmetric version of ATA reactions for the synthesis of optically active 1,3-disubstituted allenes has also been achieved in this group with two strategies. One is called "chiral ligand" strategy, using terminal alkynes, aldehydes, and nonchiral amine with the assistance of a proper chiral ligand. The other is the "chiral amine" strategy, applying terminal alkynes, aldehydes, and chiral amines such as ( S)- or ( R)-α,α-diphenylprolinol or ( S)- or ( R)-α,α-dimethylprolinol. Optically active 1,3-disubstituted allenes containing different synthetically useful functionalities such as alcohol, amide, sulfamide, malonate, carboxylate, and carbohydrate units could be prepared without protection with the newly developed CuBr2-catalyzed chiral amine strategy. Recently, we have applied these enantioselective allenation of terminal alkyne (EATA) reactions to the syntheses of some natural allenes such as laballenic acid, insect pheromone, methyl ( R)-8-hydroxyocta-5,6-dienoate, phlomic acid, and lamenallenic acid, as well as some non-allene natural γ-butyrolactones such as xestospongienes (E, F, G, and H), ( R)-4-tetradecalactone, ( S)-4-tetradecalactone, ( R)-γ-palmitolactone, and ( R)-4-decalactone.
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Affiliation(s)
- Xin Huang
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou, 310027 Zhejiang, People’s Republic of China
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, Hangzhou, 310027 Zhejiang, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, P. R. China
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130
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Wang B, Wang X, Yin X, Yu W, Liao Y, Ye J, Wang M, Liao J. Cu-Catalyzed S N2' Substitution of Propargylic Phosphates with Vinylarene-Derived Chiral Nucleophiles: Synthesis of Chiral Allenes. Org Lett 2019; 21:3913-3917. [PMID: 31074282 DOI: 10.1021/acs.orglett.9b00908] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A new Cu-catalyzed enantioselective three-component (i.e., styrenes, B2pin2, and propargylic phosphates) allenylation via an SN2' substitution of propargylic electrophiles with vinylarene-derived chiral nucleophiles is presented. This method provides an efficient and enantioselective approach to access a range of optically pure di-(1,1-), tri-, and tetra-substituted allenes with α-central chirality and axial chirality in excellent chemo-, regio-, diastereo-, and enantioselectivities.
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Affiliation(s)
- Bing Wang
- Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Xihong Wang
- Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Xuemei Yin
- Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Wangzhi Yu
- Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Yang Liao
- Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Jialin Ye
- College of Chemical Engineering , Sichuan University Chengdu 610065 , China
| | - Min Wang
- Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China
| | - Jian Liao
- Chengdu Institute of Biology , Chinese Academy of Sciences , Chengdu 610041 , China.,University of Chinese Academy of Sciences , Beijing 100049 , China.,College of Chemical Engineering , Sichuan University Chengdu 610065 , China
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131
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Crotti S, Di Iorio N, Artusi C, Mazzanti A, Righi P, Bencivenni G. Direct Access to Alkylideneoxindoles via Axially Enantioselective Knoevenagel Condensation. Org Lett 2019; 21:3013-3017. [PMID: 30977662 DOI: 10.1021/acs.orglett.9b00505] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The organocatalytic axially enantioselective Knoevenagel condensation between prochiral cyclohexanones and oxindoles is presented. The reaction, promoted by a primary amine, proceeded smoothly and furnished unprecedented examples of novel cyclohexylidene oxindoles displaying axial chirality.
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Affiliation(s)
- Simone Crotti
- Department of Industrial Chemistry "Toso Montanari" University of Bologna , Viale del Risorgimento 4 , 40136 , Bologna , Italy
| | - Nicola Di Iorio
- Department of Industrial Chemistry "Toso Montanari" University of Bologna , Viale del Risorgimento 4 , 40136 , Bologna , Italy
| | - Chiara Artusi
- Department of Industrial Chemistry "Toso Montanari" University of Bologna , Viale del Risorgimento 4 , 40136 , Bologna , Italy
| | - Andrea Mazzanti
- Department of Industrial Chemistry "Toso Montanari" University of Bologna , Viale del Risorgimento 4 , 40136 , Bologna , Italy
| | - Paolo Righi
- Department of Industrial Chemistry "Toso Montanari" University of Bologna , Viale del Risorgimento 4 , 40136 , Bologna , Italy
| | - Giorgio Bencivenni
- Department of Industrial Chemistry "Toso Montanari" University of Bologna , Viale del Risorgimento 4 , 40136 , Bologna , Italy
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132
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Ghorai J, Anbarasan P. Developments in Cp*Co
III
‐Catalyzed C−H Bond Functionalizations. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201800452] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jayanta Ghorai
- Department of ChemistryIndian Institute of Technology Madras Chennai – 600036
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133
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Wei XF, Wakaki T, Itoh T, Li HL, Yoshimura T, Miyazaki A, Oisaki K, Hatanaka M, Shimizu Y, Kanai M. Catalytic Regio- and Enantioselective Proton Migration from Skipped Enynes to Allenes. Chem 2019. [DOI: 10.1016/j.chempr.2018.11.022] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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134
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Cheng X, Wang Z, Quintanilla CD, Zhang L. Chiral Bifunctional Phosphine Ligand Enabling Gold-Catalyzed Asymmetric Isomerization of Alkyne to Allene and Asymmetric Synthesis of 2,5-Dihydrofuran. J Am Chem Soc 2019; 141:3787-3791. [PMID: 30789268 DOI: 10.1021/jacs.8b12833] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The asymmetric isomerization of alkyne to allene is the most efficient and the completely atom-economic approach to this class of versatile axial chiral structure. However, the state-of-the-art is limited to tert-butyl alk-3-ynoate substrates that possess requisite acidic propargylic C-H bonds. Reported here is a strategy based on gold catalysis that is enabled by a designed chiral bifunctional biphenyl-2-ylphosphine ligand. It permits isomerization of alkynes with nonacidic α-C-H bonds and hence offers a much-needed general solution. With chiral propargylic alcohols as substrates, 2,5-disubstituted 2,5-dihydrofurans are formed in one step in typically good yields and with good to excellent diastereoselectivities. With achiral substrates, 2,5-dihydrofurans are formed with good to excellent enantiomeric excesses. A novel center-chirality approach is developed to achieve a stereocontrol effect similar to an axial chirality in the designed chiral ligand. The mechanistic studies established that the precatalyst axial epimers are all converted into the catalytically active cationic gold catalyst owing to the fluxional axis of the latter.
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Affiliation(s)
- Xinpeng Cheng
- Department of Chemistry and Biochemistry , University of California , Santa Barbara , California 93106 , United States
| | - Zhixun Wang
- Department of Chemistry and Biochemistry , University of California , Santa Barbara , California 93106 , United States
| | - Carlos D Quintanilla
- Department of Chemistry and Biochemistry , University of California , Santa Barbara , California 93106 , United States
| | - Liming Zhang
- Department of Chemistry and Biochemistry , University of California , Santa Barbara , California 93106 , United States
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135
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Di Iorio N, Crotti S, Bencivenni G. Organocatalytic Desymmetrization Reactions for the Synthesis of Axially Chiral Compounds. CHEM REC 2019; 19:2095-2104. [DOI: 10.1002/tcr.201800194] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Nicola Di Iorio
- Department of Industrial Chemistry “Toso Montanari”Alma Mater Studiorum-University of Bologna viale del Risorgimento 4 40136 Bologna Italy
| | - Simone Crotti
- Department of Industrial Chemistry “Toso Montanari”Alma Mater Studiorum-University of Bologna viale del Risorgimento 4 40136 Bologna Italy
| | - Giorgio Bencivenni
- Department of Industrial Chemistry “Toso Montanari”Alma Mater Studiorum-University of Bologna viale del Risorgimento 4 40136 Bologna Italy
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136
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Schwartz LA, Holmes M, Brito GA, Gonçalves TP, Richardson J, Ruble JC, Huang KW, Krische MJ. Cyclometalated Iridium-PhanePhos Complexes Are Active Catalysts in Enantioselective Allene-Fluoral Reductive Coupling and Related Alcohol-Mediated Carbonyl Additions That Form Acyclic Quaternary Carbon Stereocenters. J Am Chem Soc 2019; 141:2087-2096. [PMID: 30681850 PMCID: PMC6423978 DOI: 10.1021/jacs.8b11868] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Iridium complexes modified by the chiral phosphine ligand PhanePhos catalyze the 2-propanol-mediated reductive coupling of diverse 1,1-disubstituted allenes 1a-1u with fluoral hydrate 2a to form CF3-substituted secondary alcohols 3a-3u that incorporate acyclic quaternary carbon-containing stereodiads. By exploiting concentration-dependent stereoselectivity effects related to the interconversion of kinetic ( Z)- and thermodynamic ( E)-σ-allyliridium isomers, adducts 3a-3u are formed with complete levels of branched regioselectivity and high levels of anti-diastereo- and enantioselectivity. The utility of this method for construction of CF3-oxetanes and CF3-azetidines is illustrated by the formation of 4a and 6a, respectively. Studies of the reaction mechanism aimed at illuminating the singular effectiveness of PhanePhos as a supporting ligand in this and related transformations have led to the identification of a chromatographically stable cyclometalated iridium-( R)-PhanePhos complex, Ir-PP-I, that is catalytically competent for allene-fluoral reductive coupling and previously reported transfer hydrogenative C-C couplings of dienes or CF3-allenes with methanol. Deuterium labeling studies, reaction progress kinetic analysis (RPKA) and computational studies corroborate a catalytic mechanism involving rapid allene hydrometalation followed by turnover-limiting carbonyl addition. A computationally determined stereochemical model shows that the ortho-CH2 group of the cyclometalated iridium-PhanePhos complex plays a key role in directing diastereo- and enantioselectivity. The collective data provide key insights into the structural-interactional features of allyliridium complexes required to enforce nucleophilic character, which should inform the design of related cyclometalated catalysts for umpoled allylation.
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Affiliation(s)
- Leyah A Schwartz
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
| | - Michael Holmes
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
| | - Gilmar A Brito
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
| | - Théo P Gonçalves
- KAUST Catalysis Center and Division of Physical Sciences and Engineering , King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900 , Saudi Arabia
| | - Jeffery Richardson
- Discovery Chemistry Research and Technologies , Eli Lilly and Company Limited , Erl Wood Manor , Windlesham , Surrey GU20 6PH , United Kingdom
| | - J Craig Ruble
- Discovery Chemistry Research and Technologies , Eli Lilly and Company , Indianapolis , Indiana 46285 , United States
| | - Kuo-Wei Huang
- KAUST Catalysis Center and Division of Physical Sciences and Engineering , King Abdullah University of Science and Technology (KAUST) , Thuwal 23955-6900 , Saudi Arabia
| | - Michael J Krische
- Department of Chemistry , University of Texas at Austin , Austin , Texas 78712 , United States
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137
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Synthesis of 1,3-dioxo-substituted allenes via copper(I)-catalyzed coupling of α-oxo-alkynes and α-oxo-diazos by controlling the sequence of adding substrates. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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138
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Song S, Zhou J, Fu C, Ma S. Catalytic enantioselective construction of axial chirality in 1,3-disubstituted allenes. Nat Commun 2019; 10:507. [PMID: 30705274 PMCID: PMC6355870 DOI: 10.1038/s41467-018-07908-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 10/29/2018] [Indexed: 11/17/2022] Open
Abstract
Metal-catalyzed enantioselective construction of the loosening axial allene chirality spreading over three carbon atoms using a chiral ligand is still a significant challenge. In the literature, steric effect of the substrates is the major strategy applied for such a purpose. Herein, we present a general palladium-catalyzed asymmetrization of readily available racemic 2,3-allenylic carbonates with different types of non-substituted and 2-substituted malonates using (R)-(−)-DTBM-SEGPHOS as the preferred ligand to afford 1,3-disubstituted chiral allenes with 90~96% ee. This protocol has been applied to the first enantioselective synthesis of natural product, (R)-traumatic lactone. Control experiments showed that in addition to the chiral ligand, conducting this transformation via Procedure C, which excludes the extensive prior coordination of the allene unit in the starting allene with Pd forming a species without the influence of the chiral ligand, is crucial for the observed high enantioselectivity. Highly enantioselective synthesis of allenes has been relying, so far, on the steric hindrance of substrates. Here the authors achieve excellent stereocontrol in the synthesis of chiral allenes with a palladium-DTBM-SEGPHOS catalytic system in a non-substrate-dependent manner.
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Affiliation(s)
- Shihua Song
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, 310027, Hangzhou, Zhejiang, People's Republic of China
| | - Jing Zhou
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, 310027, Hangzhou, Zhejiang, People's Republic of China
| | - Chunling Fu
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, 310027, Hangzhou, Zhejiang, People's Republic of China
| | - Shengming Ma
- Laboratory of Molecular Recognition and Synthesis, Department of Chemistry, Zhejiang University, 310027, Hangzhou, Zhejiang, People's Republic of China.
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139
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Trost BM, Tracy JS, Yusoontorn T. Vanadium-Catalyzed Coupling of Allenols with Electrophilic Halide Sources for the Formation of α-Halo-α′,β′-unsaturated Ketones. Org Lett 2019; 21:1207-1211. [DOI: 10.1021/acs.orglett.9b00195] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Barry M. Trost
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
| | - Jacob S. Tracy
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
| | - Tas Yusoontorn
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
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140
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Zhang P, Huang Q, Cheng Y, Li R, Li P, Li W. Remote Stereocontrolled Construction of Vicinal Axially Chiral Tetrasubstituted Allenes and Heteroatom-Functionalized Quaternary Carbon Stereocenters. Org Lett 2019; 21:503-507. [DOI: 10.1021/acs.orglett.8b03801] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Pei Zhang
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University, Qingdao, 266021, China
| | - Qiuhong Huang
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University, Qingdao, 266021, China
| | - Yuyu Cheng
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Rongshi Li
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University, Qingdao, 266021, China
| | - Pengfei Li
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Wenjun Li
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University, Qingdao, 266021, China
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141
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Wu P, Jia M, Ma S. Pd-Catalyzed coupling reaction of cyclobutanols with propargylic carbonates. Org Chem Front 2019. [DOI: 10.1039/c9qo00192a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Pd-Catalyzed ring opening coupling reaction of cyclobutanols with propargylic carbonates afforded δ-allenyl ketones efficiently.
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Affiliation(s)
- Penglin Wu
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Minqiang Jia
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis
- Department of Chemistry
- Fudan University
- Shanghai 200433
- P. R. China
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142
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Song Y, Song S, Duan X, Wu X, Jiang F, Zhang Y, Fan J, Huang X, Fu C, Ma S. Copper-catalyzed radical approach to allenyl iodides. Chem Commun (Camb) 2019; 55:11774-11777. [DOI: 10.1039/c9cc05853b] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A copper-catalyzed 1,4-addition reaction of arylsulfonyl iodides with 1,3-enynes afforded various allenyl halides in high yields under mild conditions via a radical mechanism.
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143
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Catalytic asymmetric synthesis of chiral trisubstituted heteroaromatic allenes from 1,3-enynes. Commun Chem 2018. [DOI: 10.1038/s42004-018-0065-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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144
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Kim Y, Lee H, Park S, Lee Y. Copper-Catalyzed Propargylic Reduction with Diisobutylaluminum Hydride. Org Lett 2018; 20:5478-5481. [PMID: 30113848 DOI: 10.1021/acs.orglett.8b02413] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A mild and efficient method for the synthesis of allenes through selective copper-catalyzed hydride addition to propargylic chlorides using commercially available diisobutylaluminum hydride has been developed. This transformation, which is promoted by a readily accessible N-heterocyclic carbene-copper complex, provides a wide range of new and versatile functionalized allenes in good to excellent yields with high regio- and stereoselectivities.
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Affiliation(s)
- Yuna Kim
- Department of Chemistry , Kwangwoon University , Seoul 01897 , Republic of Korea
| | - Hanseul Lee
- Department of Chemistry , Kwangwoon University , Seoul 01897 , Republic of Korea
| | - Sunga Park
- Department of Chemistry , Kwangwoon University , Seoul 01897 , Republic of Korea
| | - Yunmi Lee
- Department of Chemistry , Kwangwoon University , Seoul 01897 , Republic of Korea
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145
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Palladium-catalyzed, ligand-free S N 2’ substitution reactions of organoaluminum with propargyl acetates for the synthesis of multi-substituted allenes. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.06.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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146
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Zhang L, Zhang ZJ, Xiao JY, Song J. Asymmetric Synthesis of Allenyl α-Amino Amides by an Isothiourea Catalyzed Enantioselective [2,3]-Sigmatropic Rearrangement. Org Lett 2018; 20:5519-5522. [PMID: 30153032 DOI: 10.1021/acs.orglett.8b02521] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Highly efficient catalytic asymmetric [2,3]-sigmatropic rearrangements of propargyl ammonium salts have been accomplished under mild reaction conditions. In the presence of the chiral isothiourea catalyst, a wide range of allenyl α-amino amide derivatives were obtained in generally good yields (up to 99%) with excellent enantioselectivities (up to 96% ee).
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Affiliation(s)
- Ling Zhang
- Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Zi-Jing Zhang
- Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Jing-Yu Xiao
- Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
| | - Jin Song
- Department of Chemistry , University of Science and Technology of China , Hefei 230026 , China
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147
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Domingo-Legarda P, Soler-Yanes R, Quirós-López MT, Buñuel E, Cárdenas DJ. Iron-Catalyzed Coupling of Propargyl Bromides and Alkyl Grignard Reagents. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800849] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Pablo Domingo-Legarda
- Department of Organic Chemistry; Facultad de Ciencias; Universidad Autónoma de Madrid; Institute for Advanced Research in Chemical Sciences (IAdChem); Campus de Cantoblanco 28049 Madrid Spain
| | - Rita Soler-Yanes
- Department of Organic Chemistry; Facultad de Ciencias; Universidad Autónoma de Madrid; Institute for Advanced Research in Chemical Sciences (IAdChem); Campus de Cantoblanco 28049 Madrid Spain
| | - M. Teresa Quirós-López
- Department of Organic Chemistry; Facultad de Ciencias; Universidad Autónoma de Madrid; Institute for Advanced Research in Chemical Sciences (IAdChem); Campus de Cantoblanco 28049 Madrid Spain
| | - Elena Buñuel
- Department of Organic Chemistry; Facultad de Ciencias; Universidad Autónoma de Madrid; Institute for Advanced Research in Chemical Sciences (IAdChem); Campus de Cantoblanco 28049 Madrid Spain
| | - Diego J. Cárdenas
- Department of Organic Chemistry; Facultad de Ciencias; Universidad Autónoma de Madrid; Institute for Advanced Research in Chemical Sciences (IAdChem); Campus de Cantoblanco 28049 Madrid Spain
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148
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Poulsen PH, Li Y, Lauridsen VH, Jørgensen DKB, Palazzo TA, Meazza M, Jørgensen KA. Organocatalytic Formation of Chiral Trisubstituted Allenes and Chiral Furan Derivatives. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806238] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Yang Li
- Department of ChemistryAarhus University 8000 DK- Aarhus C Denmark
| | | | | | | | - Marta Meazza
- Department of ChemistryAarhus University 8000 DK- Aarhus C Denmark
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149
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Poulsen PH, Li Y, Lauridsen VH, Jørgensen DKB, Palazzo TA, Meazza M, Jørgensen KA. Organocatalytic Formation of Chiral Trisubstituted Allenes and Chiral Furan Derivatives. Angew Chem Int Ed Engl 2018; 57:10661-10665. [DOI: 10.1002/anie.201806238] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/15/2018] [Indexed: 01/17/2023]
Affiliation(s)
| | - Yang Li
- Department of ChemistryAarhus University 8000 DK- Aarhus C Denmark
| | | | | | | | - Marta Meazza
- Department of ChemistryAarhus University 8000 DK- Aarhus C Denmark
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150
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Guisán-Ceinos M, Martín-Heras V, Soler-Yanes R, Cárdenas DJ, Tortosa M. Copper-catalysed cross-coupling of alkyl Grignard reagents and propargylic ammonium salts: stereospecific synthesis of allenes. Chem Commun (Camb) 2018; 54:8343-8346. [PMID: 29992220 DOI: 10.1039/c8cc03760d] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Herein we describe a robust and practical method to prepare enantiomerically enriched trisubstituted allenes using alkyl Grignard reagents and bench stable propargylic ammonium salts. Excellent yields as well as regio- and stereoselectivities are observed. Our conditions provide a solution to the allene racemization, which has been a long-standing problem when using Grignard reagents.
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Affiliation(s)
- Manuel Guisán-Ceinos
- Departamento de Química Orgánica, Facultad de Ciencias, Institute for Advanced Research in Chemical Sciences (IAdChem), Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.
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