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Okamoto K, Higuma R, Muta K, Fukumoto K, Tsuchihashi Y, Ashikari Y, Nagaki A. External Flash Generation of Carbenoids Enables Monodeuteration of Dihalomethanes. Chemistry 2023; 29:e202301738. [PMID: 37300319 DOI: 10.1002/chem.202301738] [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: 05/31/2023] [Revised: 06/04/2023] [Accepted: 06/05/2023] [Indexed: 06/12/2023]
Abstract
In this study, incorporation of one deuterium atom was achieved by H-D exchange of one of the two identical methylene protons in various dihalomethanes (halogen=Cl, Br, and I) through a rapid-mixing microflow reaction of lithium diisopropylamide as a strong base and deuterated methanol as a deuteration reagent. Generation of highly unstable carbenoid intermediate and suppression of its decomposition were successfully controlled under high flow-rate conditions. Monofunctionalization of diiodomethane afforded various building blocks composed of boryl, stannyl, and silyl groups. The monodeuterated diiodomethane, which served as a deuterated C1 source, was subsequently subjected to diverted functionalization methods to afford various products including biologically important molecules bearing isotope labelling at specific positions and homologation products with monodeuteration.
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Affiliation(s)
- Kazuhiro Okamoto
- Department of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Ryosuke Higuma
- Department of Synthetic and Biological Chemistry Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kensuke Muta
- Fundamental Chemical Research Center, Central Glass Co., Ltd., 17-5, Nakadai 2-chome, Kawagoe City, Saitama, 350-1159, Japan
| | - Keita Fukumoto
- Department of Synthetic and Biological Chemistry Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Yuta Tsuchihashi
- Taiyo Nippon Sanso Corp., 10 Okubo, Tsukuba-shi, Ibaraki, 300-2611, Japan
| | - Yosuke Ashikari
- Department of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, 060-0810, Japan
| | - Aiichiro Nagaki
- Department of Chemistry, Graduate School of Science, Hokkaido University, Sapporo, 060-0810, Japan
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Desrues T, Legros J, Jubault P, Poisson T. Flow synthesis of an α-amino boronic ester as a key precursor of bortezomib drug. REACT CHEM ENG 2022. [DOI: 10.1039/d2re00099g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The flow synthesis of the optically active α-amino boronate precursor of the bortezomib drug is described, including a key diastereoselective Matteson rearrangement.
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Affiliation(s)
- Titouan Desrues
- INSA Rouen, CNRS, UNIROUEN, COBRA, Normandie Univ, 76600 Rouen, France
| | - Julien Legros
- INSA Rouen, CNRS, UNIROUEN, COBRA, Normandie Univ, 76600 Rouen, France
| | - Philippe Jubault
- INSA Rouen, CNRS, UNIROUEN, COBRA, Normandie Univ, 76600 Rouen, France
| | - Thomas Poisson
- INSA Rouen, CNRS, UNIROUEN, COBRA, Normandie Univ, 76600 Rouen, France
- Institut Universitaire de France, 1 Rue Descartes, 75231 Paris, France
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Manneveau M, Tanii S, Gens F, Legros J, Chataigner I. Dearomatization of 3-cyanoindoles by (3 + 2) cycloaddition: from batch to flow chemistry. Org Biomol Chem 2021; 18:3481-3486. [PMID: 32347286 DOI: 10.1039/d0ob00582g] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
1,3-Dipolar dearomatizing cycloadditions between a non-stabilized azomethine ylide and 3-cyanoindoles or benzofuran afford the corresponding 3D-heterocycles bearing a quaternary carbon centre at the ring junction. While 6 equivalents of ylide precursor 1 are required for full conversion in a classical flask, working under flow conditions limits the excess (3 equiv., tR = 1 min) and leads to a cleaner process, affording cycloadducts that are easier to isolate.
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Affiliation(s)
- Maxime Manneveau
- Normandie Université, UNIROUEN, CNRS, INSA Rouen, COBRA laboratory, F-76000 Rouen, France.
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Ashikari Y, Kawaguchi T, Mandai K, Aizawa Y, Nagaki A. A Synthetic Approach to Dimetalated Arenes Using Flow Microreactors and the Switchable Application to Chemoselective Cross-Coupling Reactions. J Am Chem Soc 2020; 142:17039-17047. [PMID: 32859131 DOI: 10.1021/jacs.0c06370] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In spite of their potential utility, the chemistry of dimetalated arenes is still in its infancy because they are extremely difficult to synthesize. We report a novel method of synthesizing arenes bearing a boryl group and a metallic substituent, such as boryl, silyl, stannyl, or zincyl groups, in an integrated flow microreactor based on the generation and reactions of aryllithiums bearing a trialkyl borate moiety. The bimetallic arenes showed a remarkable chemoselectivity in palladium-catalyzed cross-coupling reactions. The selectivity was switched by the selection of the metal species that constitutes the dimetalated arenes as well as appropriate catalysts.
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Affiliation(s)
- Yosuke Ashikari
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigakukatsura Nishikyo-ku, Kyoto 615-8510, Japan
| | - Tomoko Kawaguchi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigakukatsura Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kyoko Mandai
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigakukatsura Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yoko Aizawa
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigakukatsura Nishikyo-ku, Kyoto 615-8510, Japan
| | - Aiichiro Nagaki
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyotodaigakukatsura Nishikyo-ku, Kyoto 615-8510, Japan
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Pérez K, Picard B, Vuluga D, Burel F, Hreiz R, Falk L, Commenge JM, Nagaki A, Yoshida JI, Chataigner I, Maddaluno J, Legros J. Bromine–Lithium Exchange on a gem-Dibromoalkene, Part 2: Comparative Performance of Flow Micromixers. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00203] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Katia Pérez
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000 Rouen, France
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, PBS, 76000 Rouen, France
| | - Baptiste Picard
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000 Rouen, France
| | - Daniela Vuluga
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, PBS, 76000 Rouen, France
| | - Fabrice Burel
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, PBS, 76000 Rouen, France
| | - Rainier Hreiz
- Laboratoire Réactions et Génie des Procédés, Université de Lorraine, CNRS, LRGP, 54000 Nancy, France
| | - Laurent Falk
- Laboratoire Réactions et Génie des Procédés, Université de Lorraine, CNRS, LRGP, 54000 Nancy, France
| | - Jean-Marc Commenge
- Laboratoire Réactions et Génie des Procédés, Université de Lorraine, CNRS, LRGP, 54000 Nancy, France
| | - Aiichiro Nagaki
- Department of Synthetic and Biological Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Jun-ichi Yoshida
- Department of Synthetic and Biological Chemistry, Graduate School of Engineering, Kyoto University, Nishikyo-ku, Kyoto 615-8510, Japan
- National Institute of Technology, Suzuka College, Shiroko-cho, Suzuka, Mie 510-0294, Japan
| | - Isabelle Chataigner
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000 Rouen, France
- Sorbonne Université, CNRS, Laboratoire de Chimie Théorique (LCT), UMR7616, 75005 Paris, France
| | - Jacques Maddaluno
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000 Rouen, France
| | - Julien Legros
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA, 76000 Rouen, France
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