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Wang H, Xun SS, Yu CB, Zhou YG. Palladium-catalyzed asymmetric hydrogenation of lactones under base-free conditions. Chem Sci 2024; 15:11038-11042. [PMID: 39027297 PMCID: PMC11253110 DOI: 10.1039/d4sc01890g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 06/11/2024] [Indexed: 07/20/2024] Open
Abstract
Asymmetric hydrogenation of esters through homogeneous catalysis is a significantly important transformation in organic synthesis. The systems developed so far mainly focused on chiral iridium and ruthenium catalysts, which required a base to facilitate the activity. Herein, we present a palladium-catalyzed asymmetric hydrogenation of lactones under base-free conditions through dynamic kinetic resolution and kinetic resolution. The reaction exhibits high enantioselectivity and excellent functional group tolerance. Remarkably, the hydrogenation proceeds smoothly at the gram scale, and the products can be transformed into several chiral potential building blocks without loss of optical purity. This work provides a new strategy for asymmetric hydrogenation of esters under base-free conditions.
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Affiliation(s)
- Han Wang
- School of Chemistry, Dalian University of Technology Dalian 116033 P. R. China
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 P. R. China
| | - Shan-Shan Xun
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 P. R. China
| | - Chang-Bin Yu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 P. R. China
| | - Yong-Gui Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 P. R. China
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Chen Y, Gandon V, Bour C. Squaramide/Li +-Catalyzed Direct S N1-Type Reaction of Vinyl Triflates with Difluoroenoxysilanes through Vinyl Cations. Org Lett 2022; 24:6978-6982. [PMID: 36099642 DOI: 10.1021/acs.orglett.2c02793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Difluoromethylene-skipped enones have been readily obtained from arylvinyltriflates and aryldifluoroenoxysilanes. While these useful compounds are difficult to synthesize by the classical aldol/dehydration approach, the use of a squaramide/Li+ catalyst allows their direct formation via a vinyl carbocation paired with a weakly coordinating perfluorinated alkoxyaluminate. This strategy makes possible a reaction between a typically weak electrophile and a weak nucleophile. Control experiments and DFT computations shed light on the mechanism of this transformation.
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Affiliation(s)
- Yan Chen
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Saclay, Bâtiment 420, 91405 Cedex Orsay, France
| | - Vincent Gandon
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Saclay, Bâtiment 420, 91405 Cedex Orsay, France.,Laboratoire de Chimie Moléculaire (LCM), CNRS UMR 9168, Ecole Polytechnique, Institut Polytechnique de Paris, Route de Saclay, 91128 Cedex Palaiseau, France
| | - Christophe Bour
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), CNRS UMR 8182, Université Paris-Saclay, Bâtiment 420, 91405 Cedex Orsay, France
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3
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Mu B, Xia S, Wu L, Li J, Li Z, Wang Z, Wu J. Radical Esterification of Unactivated Alkenes Using Formate as Carbonyl Source. J Org Chem 2022; 87:4918-4925. [PMID: 35316060 DOI: 10.1021/acs.joc.1c02808] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In recent years, methyl formate has received considerable attention as an ideal and green C1 building block to synthesize carboxylic esters. However, examples of a one-step route to esters with one-carbon elongation using methyl formate as a source of methoxycarbonyl radical are still rare. Herein, we present peroxide-induced radical carbonylation of N-(2-methylallyl)benzamides with methyl formate as the precursor of methoxycarbonyl radical and RuCl3 as catalyst, affording a series of biologically valuable 4-[(methoxycarbonyl)methyl]-3,4-dihydroisoquinolinones with good tolerance and insensitivity to moisture in one pot under simple and mild conditions.
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Affiliation(s)
- Bing Mu
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou 450001, PR China.,College of Life Sciences, Huzhou University, Huzhou 313000, Zhejiang Province, PR China.,College of Chemistry and Chemical Engineering, Zhengzhou Normal University, Zhengzhou 450044, PR China
| | - Shiwei Xia
- Division of Molecular Catalysis & Synthesis, Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, PR China
| | - Linna Wu
- Division of Molecular Catalysis & Synthesis, Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, PR China
| | - Jingya Li
- Leadmedpharm Co., Ltd., Huzhou 313100, Zhejiang Province, PR China
| | - Zhongxian Li
- High & New Technology Research Center, Henan Academy of Sciences, Zhengzhou 450002, PR China
| | - Zechao Wang
- Division of Molecular Catalysis & Synthesis, Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, PR China
| | - Junliang Wu
- College of Chemistry and Institute of Green Catalysis, Zhengzhou University, Zhengzhou 450001, PR China
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Yang J, Ponra S, Li X, Peters BBC, Massaro L, Zhou T, Andersson PG. Catalytic enantioselective synthesis of fluoromethylated stereocenters by asymmetric hydrogenation. Chem Sci 2022; 13:8590-8596. [PMID: 35974749 PMCID: PMC9337738 DOI: 10.1039/d2sc02685f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 06/21/2022] [Indexed: 11/22/2022] Open
Abstract
Fluoromethyl groups possess specific steric and electronic properties and serve as a bioisostere of alcohol, thiol, nitro, and other functional groups, which are important in an assortment of molecular recognition processes. Herein we report a catalytic method for the asymmetric synthesis of a variety of enantioenriched products bearing fluoromethylated stereocenters with excellent yields and enantioselectivities. Various N,P-ligands were designed and applied in the hydrogenation of fluoromethylated olefins and vinyl fluorides. Herein, a catalytic asymmetric hydrogenation to synthesize various products bearing fluoromethylated stereocenters has been developed.![]()
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Affiliation(s)
- Jianping Yang
- Department of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 106 91, Stockholm, Sweden
| | - Sudipta Ponra
- Department of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 106 91, Stockholm, Sweden
| | - Xingzhen Li
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Bram B. C. Peters
- Department of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 106 91, Stockholm, Sweden
| | - Luca Massaro
- Department of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 106 91, Stockholm, Sweden
| | - Taigang Zhou
- College of Chemistry and Chemical Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500, China
| | - Pher G. Andersson
- Department of Organic Chemistry, Stockholm University, Arrhenius Laboratory, 106 91, Stockholm, Sweden
- School of Chemistry and Physics, University of Kwazulu-Natal, Private Bag X54001, Durban, 4000, South Africa
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Charvillat T, Bernardelli P, Daumas M, Pannecoucke X, Ferey V, Besset T. Hydrogenation of fluorinated molecules: an overview. Chem Soc Rev 2021; 50:8178-8192. [PMID: 34060550 DOI: 10.1039/d0cs00736f] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The review aims at providing an overview on the developments made in hydrogenation reactions of molecules having various fluorinated groups (F, CF3, CF2H, CF2Rf). Indeed, the hydrogenation of fluorine-containing molecules is a straightforward and atom-economical way to access challenging (chiral) fluorinated scaffolds. This promising field is still in its infancy and milestones are expected in the coming years. To illustrate that, the review will highlight the major contributions made in that field and will be organized by fluorinated groups.
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Affiliation(s)
- T Charvillat
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France.
| | - P Bernardelli
- Sanofi Sanofi R&D, Integrated Drug Discovery, Small Molecule Medicinal Chemistry, 1 avenue Pierre Brossolette, 91385 Chilly-Mazarin, France
| | - M Daumas
- Sanofi R&D, 371 rue du Professeur Blayac, 34184 Montpellier, France
| | - X Pannecoucke
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France.
| | - V Ferey
- Sanofi R&D, 371 rue du Professeur Blayac, 34184 Montpellier, France
| | - T Besset
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), 76000 Rouen, France.
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