1
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To HM, Ollevier T. Cyclopropanation of Alkenes with Halodiazirines as Halocarbene Precursors in Continuous Flow. Chemistry 2024; 30:e202303969. [PMID: 38490952 DOI: 10.1002/chem.202303969] [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: 11/28/2023] [Revised: 03/11/2024] [Accepted: 03/13/2024] [Indexed: 03/17/2024]
Abstract
The cyclopropanation reaction of alkenes with photolytically-generated chlorocarbenes from chlorodiazirines is reported as an effective way to prepare substituted 3-chloro-3-aryl-cyclopropanes. This practical and efficient approach allows the synthesis of various 3-chloro-3-aryl-cyclopropanes (32 examples) in continuous flow in 5-minute residence time under light-emitting diode (LED) irradiation. The conditions using 380 nm LED irradiation were successfully extended to the synthesis of substituted 3-bromo-3-aryl-cyclopropanes (3 examples).
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Affiliation(s)
- Hoang-Minh To
- Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
| | - Thierry Ollevier
- Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, G1V 0A6, Canada
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2
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Xie T, Chen L, Shen Z, Xu S. Simple Ether-Directed Enantioselective C(sp 3 )-H Borylation of Cyclopropanes Enabled by Iridium Catalysis. Angew Chem Int Ed Engl 2023; 62:e202300199. [PMID: 36762972 DOI: 10.1002/anie.202300199] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 02/07/2023] [Accepted: 02/10/2023] [Indexed: 02/11/2023]
Abstract
Reported here is an efficient and simple ether-directed iridium-catalyzed enantioselective C(sp3 )-H borylation of cyclopropanes. Various functional groups were well-tolerated, affording a vast array of chiral cyclopropanes with high enantioselectivities. We also demonstrated that the turnover numbers of the current reaction could be up to 335.
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Affiliation(s)
- Tian Xie
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China.,State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Lili Chen
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Zhenlu Shen
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Senmiao Xu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
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3
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Montesinos‐Magraner M, Costantini M, Ramírez‐Contreras R, Muratore ME, Johansson MJ, Mendoza A. General Cyclopropane Assembly by Enantioselective Transfer of a Redox‐Active Carbene to Aliphatic Olefins. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814123] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
| | - Matteo Costantini
- Dept. of Organic ChemistryStockholm University, Arrhenius Laboratory 10691 Stockholm Sweden
| | | | - Michael E. Muratore
- Cardiovascular, Renal and Metabolism IMED Biotech UnitAstraZeneca Gothenburg 43183 Mölndal Sweden
| | - Magnus J. Johansson
- Cardiovascular, Renal and Metabolism IMED Biotech UnitAstraZeneca Gothenburg 43183 Mölndal Sweden
| | - Abraham Mendoza
- Dept. of Organic ChemistryStockholm University, Arrhenius Laboratory 10691 Stockholm Sweden
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4
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Montesinos-Magraner M, Costantini M, Ramírez-Contreras R, Muratore ME, Johansson MJ, Mendoza A. General Cyclopropane Assembly by Enantioselective Transfer of a Redox-Active Carbene to Aliphatic Olefins. Angew Chem Int Ed Engl 2019; 58:5930-5935. [PMID: 30675970 DOI: 10.1002/anie.201814123] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Indexed: 12/30/2022]
Abstract
Asymmetric cyclopropane synthesis currently requires bespoke strategies, methods, substrates, and reagents, even when targeting similar compounds. This approach slows down discovery and limits available chemical space. Introduced herein is a practical and versatile diazocompound and its performance in the first unified asymmetric synthesis of functionalized cyclopropanes. The redox-active leaving group in this reagent enhances the reactivity and selectivity of geminal carbene transfer. This effect allowed the asymmetric cyclopropanation of various olefins, including unfunctionalized aliphatic alkenes, that enables the three-step total synthesis of (-)-dictyopterene A. This unified synthetic approach delivers high enantioselectivities that are independent of the stereoelectronic properties of the functional groups transferred. Our results demonstrate that orthogonally differentiated diazocompounds are viable and advantageous equivalents of single-carbon chirons.
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Affiliation(s)
- Marc Montesinos-Magraner
- Dept. of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 10691, Stockholm, Sweden
| | - Matteo Costantini
- Dept. of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 10691, Stockholm, Sweden
| | | | - Michael E Muratore
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca Gothenburg, 43183, Mölndal, Sweden
| | - Magnus J Johansson
- Cardiovascular, Renal and Metabolism IMED Biotech Unit, AstraZeneca Gothenburg, 43183, Mölndal, Sweden
| | - Abraham Mendoza
- Dept. of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 10691, Stockholm, Sweden
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5
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del Hoyo AM, García Suero M. Photoredox-Catalyzed Cyclopropanation of Michael Acceptors. European J Org Chem 2017. [DOI: 10.1002/ejoc.201601604] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ana M. del Hoyo
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16-43007 Tarragona Spain
| | - Marcos García Suero
- Institute of Chemical Research of Catalonia (ICIQ); The Barcelona Institute of Science and Technology; Av. Països Catalans 16-43007 Tarragona Spain
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6
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Molitor S, Gessner VH. Alkali Metal Carbenoids: A Case of Higher Stability of the Heavier Congeners. Angew Chem Int Ed Engl 2016; 55:7712-6. [PMID: 27100278 DOI: 10.1002/anie.201601356] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Indexed: 11/12/2022]
Abstract
As a result of the increased polarity of the metal-carbon bond when going down the group of the periodic table, the heavier alkali metal organyl compounds are generally more reactive and less stable than their lithium congeners. We now report a reverse trend for alkali metal carbenoids. Simple substitution of lithium by the heavier metals (Na, K) results in a significant stabilization of these usually highly reactive compounds. This allows their isolation and handling at room temperature and the first structure elucidation of sodium and potassium carbenoids. The control of stability was used to control reactivity and selectivity. Hence, the Na and K carbenoids act as selective carbene-transfer reagents, whereas the more labile lithium systems give rise to product mixtures. Additional fine tuning of the M-C interaction by means of crown ether addition further allows for control of the stability and reactivity.
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Affiliation(s)
- Sebastian Molitor
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Viktoria H Gessner
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.
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Molitor S, Gessner VH. Alkali Metal Carbenoids: A Case of Higher Stability of the Heavier Congeners. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601356] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Sebastian Molitor
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Viktoria H. Gessner
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
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Pons A, Ivashkin P, Poisson T, Charette AB, Pannecoucke X, Jubault P. Catalytic Enantioselective Synthesis of Halocyclopropanes. Chemistry 2016; 22:6239-42. [DOI: 10.1002/chem.201600649] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Amandine Pons
- Normandie Univ., COBRA, UMR 6014 et FR 3038; Univ. Rouen, INSA Rouen, CNRS; 1 rue Tesnière 76821 Mont Saint-Aignan Cedex France
| | - Pavel Ivashkin
- Normandie Univ., COBRA, UMR 6014 et FR 3038; Univ. Rouen, INSA Rouen, CNRS; 1 rue Tesnière 76821 Mont Saint-Aignan Cedex France
| | - Thomas Poisson
- Normandie Univ., COBRA, UMR 6014 et FR 3038; Univ. Rouen, INSA Rouen, CNRS; 1 rue Tesnière 76821 Mont Saint-Aignan Cedex France
| | - André B. Charette
- Centre in Green Chemistry and Catalysis; Faculty of Arts and Sciences; Department of Chemistry; Université de Montréal; PO Box 6128, Station Downtown Montréal Québec H3C 3J7 Canada
| | - Xavier Pannecoucke
- Normandie Univ., COBRA, UMR 6014 et FR 3038; Univ. Rouen, INSA Rouen, CNRS; 1 rue Tesnière 76821 Mont Saint-Aignan Cedex France
| | - Philippe Jubault
- Normandie Univ., COBRA, UMR 6014 et FR 3038; Univ. Rouen, INSA Rouen, CNRS; 1 rue Tesnière 76821 Mont Saint-Aignan Cedex France
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