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Li S, Zhang D, Purushothaman A, Lv H, Shilpa S, Sunoj RB, Li X, Zhang X. Chemo-, regio- and enantioselective hydroformylation of trisubstituted cyclopropenes: access to chiral quaternary cyclopropanes. Nat Commun 2024; 15:6377. [PMID: 39075045 PMCID: PMC11286865 DOI: 10.1038/s41467-024-50689-z] [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: 02/15/2024] [Accepted: 07/18/2024] [Indexed: 07/31/2024] Open
Abstract
Catalytic asymmetric synthesis of polysubstituted chiral cyclopropane presents a significant challenge in organic synthesis due to the difficulty in enantioselective control. Here we report a rhodium-catalyzed highly chemo-, regio- and enantioselective hydroformylation of trisubstituted cyclopropenes affording chiral quaternary cyclopropanes. Importantly, the easy made sterically bulky ligand L1 can effectively suppress hydrogenation and decomposition reactions and give quaternary cyclopropanes with high regio- and enantioselectivities for both aryl and alkyl functionalized substrates. Control experiments and computational studies reveal the sterically hindered well-defined chiral pocket instead of the substrates bearing electron-withdrawing diester groups is important for controlling the enantioselectivity and regioselectivity. Scale-up reaction and follow-up diverse transformations are also presented. Density Functional theory (DFT) computations suggest that the regio- and enantio-selectivities originate from the cyclopropene insertion to the Rh-H bond. The high regioselectivity is found to benefit from the presence of more efficient noncovalent interactions (NCIs) manifesting in the form of C-H···Cl, C-H···N, and l.p(Cl)···π contacts.
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Affiliation(s)
- Shuailong Li
- Department of Chemistry and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, University of Science and Technology, Southern, 1088 Xueyuan Road, Shenzhen, 518055, China
| | - Dequan Zhang
- Department of Chemistry and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, University of Science and Technology, Southern, 1088 Xueyuan Road, Shenzhen, 518055, China
| | - Aiswarya Purushothaman
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Hui Lv
- Key Laboratory of Biomedical Polymers of Ministry of Education & College of Chemistry and Molecular Sciences, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Sauvage Center for Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, People's Republic of China
| | - Shilpa Shilpa
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India
| | - Raghavan B Sunoj
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India.
| | - Xiuxiu Li
- Department of Chemistry and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, University of Science and Technology, Southern, 1088 Xueyuan Road, Shenzhen, 518055, China.
| | - Xumu Zhang
- Department of Chemistry and Shenzhen Key Laboratory of Small Molecule Drug Discovery and Synthesis, University of Science and Technology, Southern, 1088 Xueyuan Road, Shenzhen, 518055, China.
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2
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He XK, Lu LQ, Yuan BR, Luo JL, Cheng Y, Xiao WJ. Desymmetrization-Addition Reaction of Cyclopropenes to Imines via Synergistic Photoredox and Cobalt Catalysis. J Am Chem Soc 2024; 146:18892-18898. [PMID: 38968086 DOI: 10.1021/jacs.4c07096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2024]
Abstract
Herein, we designed a reaction for the desymmetrization-addition of cyclopropenes to imines by leveraging the synergy between photoredox and asymmetric cobalt catalysis. This protocol facilitated the synthesis of a series of chiral functionalized cyclopropanes with high yield, enantioselectivity, and diastereoselectivity (44 examples, up to 93% yield and >99% ee). A possible reaction mechanism involving cyclopropene desymmetrization by Co-H species and imine addition by Co-alkyl species was proposed. This study provides a novel route to important chiral cyclopropanes and extends the frontier of asymmetric metallaphotoredox catalysis.
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Affiliation(s)
- Xiang-Kui He
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, P. R. China
| | - Liang-Qiu Lu
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, P. R. China
- Wuhan Institute of Photochemistry and Technology, 7 Bingang North Road, Wuhan 430080, P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, P. R. China
| | - Bao-Ru Yuan
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, P. R. China
| | - Jia-Long Luo
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, P. R. China
| | - Ying Cheng
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, P. R. China
| | - Wen-Jing Xiao
- Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education, College of Chemistry, Central China Normal University, 152 Luoyu Road, Wuhan 430079, P. R. China
- Wuhan Institute of Photochemistry and Technology, 7 Bingang North Road, Wuhan 430080, P. R. China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, P. R. China
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3
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Hoving M, Haaksma JJ, Stoppel A, Chronc L, Hoffmann J, Beil SB. Triplet Energy Transfer Mechanism in Copper Photocatalytic N- and O-Methylation. Chemistry 2024; 30:e202400560. [PMID: 38363220 DOI: 10.1002/chem.202400560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 02/17/2024]
Abstract
Methylation reactions are chemically simple but challenging to perform under mild and non-toxic conditions. A photochemical energy transfer strategy was merged with copper catalysis to enable fast reaction times of minutes and broad applicability to N-heterocycles, (hetero-)aromatic carboxylic acids, and drug-like molecules in high yields and good functional group tolerance. Detailed mechanistic investigations, using kinetic analysis, aprotic MS, UV/Vis, and luminescence quenching experiments revealed a triplet-triplet energy transfer mechanism between hypervalent iodine(III) reagents and readily available photosensitizers.
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Affiliation(s)
- Martijn Hoving
- Stratingh Institute for Chemistry, University of Groningen, 9747 AG, Groningen, The Netherlands
| | - Jacob-Jan Haaksma
- Stratingh Institute for Chemistry, University of Groningen, 9747 AG, Groningen, The Netherlands
| | - Anne Stoppel
- Stratingh Institute for Chemistry, University of Groningen, 9747 AG, Groningen, The Netherlands
| | - Lukas Chronc
- Stratingh Institute for Chemistry, University of Groningen, 9747 AG, Groningen, The Netherlands
| | - Jonas Hoffmann
- Stratingh Institute for Chemistry, University of Groningen, 9747 AG, Groningen, The Netherlands
| | - Sebastian B Beil
- Stratingh Institute for Chemistry, University of Groningen, 9747 AG, Groningen, The Netherlands
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4
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Sinnema EG, Ramspoth TF, Bouma RH, Ge L, Harutyunyan SR. Enantioselective Hydrophosphination of Terminal Alkenyl Aza-Heteroarenes. Angew Chem Int Ed Engl 2024; 63:e202316785. [PMID: 38133954 DOI: 10.1002/anie.202316785] [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: 11/06/2023] [Revised: 12/15/2023] [Accepted: 12/20/2023] [Indexed: 12/24/2023]
Abstract
This paper presents a Mn(I)-catalysed methodology for the enantioselective hydrophosphination of terminal alkenyl aza-heteroarenes. The catalyst operates through H-P bond activation, enabling successful hydrophosphination of a diverse range of alkenyl-heteroarenes with high enantioselectivity. The presented protocol addresses the inherently low reactivity and the commonly encountered suboptimal enantioselectivities of these challenging substrates. As an important application we show that this method facilitates the synthesis of a non-symmetric tridentate P,N,P-containing ligand like structure in just two synthetic steps using a single catalytic system.
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Affiliation(s)
- Esther G Sinnema
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Tizian-Frank Ramspoth
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Reinder H Bouma
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Luo Ge
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Syuzanna R Harutyunyan
- Stratingh Institute for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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Li J, Sun J, Yan Y, Dong Z, Xu J, Li W, Huang Y. Highly Diastereo- and Enantioselective Synthesis of Chiral Cyclohexylphosphines by Cu-Catalyzed Phosphination-Aldol Cyclization of Ketone-Enamides. Org Lett 2024; 26:210-214. [PMID: 38127580 DOI: 10.1021/acs.orglett.3c03836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
A highly diastereo- and enantioselective phosphinative cyclization of ketone-enamides with secondary diarylphosphines enabled by copper catalysis is reported, providing a range of chiral tertiary cyclohexylphosphines bearing three contiguous stereogenic centers in high yields. This asymmetric phosphination-aldol cyclization protocol can also be extended to desymmetrization of dione-enamides to create four contiguous stereogenic centers in a highly selective manner.
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Affiliation(s)
- Junbao Li
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Jinghui Sun
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Yifei Yan
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Zhuyong Dong
- Hangzhou Create Environment Energy &Technology Co. Ltd., Hangzhou 311121, China
| | - Jun Xu
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Wanmei Li
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
| | - Yinhua Huang
- College of Materials, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology, Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
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Wang C, Yang Q, Dai YH, Xiong J, Zheng Y, Duan WL. Nickel-Catalyzed Asymmetric Synthesis of P-Stereogenic Phosphanyl Hydrazine Building Blocks. Angew Chem Int Ed Engl 2023; 62:e202313112. [PMID: 37770407 DOI: 10.1002/anie.202313112] [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: 09/05/2023] [Revised: 09/28/2023] [Accepted: 09/28/2023] [Indexed: 09/30/2023]
Abstract
Catalytic asymmetric methods for the synthesis of synthetically versatile P-stereogenic building blocks offer an efficient and practical approach for the diversity-oriented preparation of P-chiral phosphorus compounds. Herein, we report the first nickel-catalyzed synthesis of P-stereogenic secondary aminophosphine-boranes by the asymmetric addition of primary phosphines to azo compounds. We further demonstrate that the P-H and P-N bonds on these phosphanyl hydrazine building blocks can be reacted sequentially and stereospecifically to access various P-stereogenic compounds with structural diversity.
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Affiliation(s)
- Chuanyong Wang
- College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, 225002, Yangzhou, China
| | - Qingliang Yang
- College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, 225002, Yangzhou, China
| | - Yuan-Hao Dai
- College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, 225002, Yangzhou, China
| | - Jianqi Xiong
- College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, 225002, Yangzhou, China
| | - Yu Zheng
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Chemical Engineering, Nanjing Forestry University, 210037, Nanjing, P. R. China
| | - Wei-Liang Duan
- College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, 225002, Yangzhou, China
- College of Chemistry and Chemical Engineering, Inner Mongolia University, 235 West University Street, 010021, Hohhot, China
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