1
|
Zhou G, Guo Z, Liu S, Shen X. Divergent Synthesis of Fluoroalkyl Ketones through Controlling the Reactivity of Organoboronate Complexes. J Am Chem Soc 2024; 146:4026-4035. [PMID: 38299789 DOI: 10.1021/jacs.3c12150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2024]
Abstract
Herein, we report a divergent synthesis of fluoroalkyl ketones through visible-light-induced reactions between readily available organoboronic esters and fluoroalkyl acylsilanes. Selective control of the reactivity of the in situ generated organoboronate complexes is the key to achieving divergent transformations. Under basic conditions, the organoboronate complexes undergo deboronative fluoride elimination, resulting in the formation of enol silyl ethers as intermediates that react with various electrophiles to generate defluorinated ketones as the products. Moreover, in combination with peroxide, a 1,2-shift of fluoroalkyl group is favored over deboronative fluoride elimination to generate ketal intermediates, leading to the formation of ketones as the products. This transition-metal-free reaction is operationally simple, and aryl, alkenyl, and alkyl boronic esters are all suitable substrates. The synthetic potential has been demonstrated by gram-scale reactions and facile synthesis of bioactive molecules including zifrosilone and its fluoroalkyl analogs.
Collapse
Affiliation(s)
- Gang Zhou
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Zhuanzhuan Guo
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Shanshan Liu
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China
| | - Xiao Shen
- The Institute for Advanced Studies, Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, Wuhan University, Wuhan 430072, China
| |
Collapse
|
2
|
Difluoroalkylative carbonylation of alkenes to access carbonyl difluoro-containing heterocycles: convenient synthesis of gemigliptin. Sci China Chem 2022. [DOI: 10.1007/s11426-022-1439-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
AbstractFluorinated heterocycles play a vital role in pharmaceutical and agrochemical industries. Hence, rapid and efficient construction of fluorinated heterocycles remains highly demanded. Herein, a difluoroalkylative carbonylative cyclization of unactivated alkenes and ethylene gas enabled by palladium catalysis has been developed for the first time toward the synthesis of α-carbonyl difluoro-modified glutarimides. This procedure can also be applied to the synthesis of GeMigliptin which is a medicine approved for the treatment of type 2 diabetes mellitus.
Collapse
|
3
|
Halder P, Talukdar V, Iqubal A, Das P. Palladium-Catalyzed Aminocarbonylation of Isoquinolines Utilizing Chloroform-COware Chemistry. J Org Chem 2022; 87:13965-13979. [PMID: 36217780 DOI: 10.1021/acs.joc.2c01629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The carbonyl group forms an integral part of several drug molecules and materials; hence, synthesis of carbonylated compounds remains an intriguing area of research for synthetic and medicinal chemists. Handling toxic CO gas has several limitations; thus, using safe and effective techniques for in or ex situ generation of carbon monoxide from nontoxic and cheap precursors is highly desirable. Among several precursors that have been explored for the generation of CO gas, chloroform can prove to be a promising CO surrogate due to its cost-effectiveness and ready availability. However, the one-pot chloroform-based carbonylation reaction requires strong basic conditions for hydrolysis of chloroform that may affect functional group tolerability of substrates and scale-up reactions. These limitations can be overcome by a two-chamber reactor (COware) that can be utilized for ex situ CO generation through hydrolysis of chloroform in one chamber and facilitating safe carbonylation reactions in another chamber under mild conditions. The versatility of this "Chloroform-COware" technique is explored through palladium-catalyzed aminocarbonylation of medicinally relevant heterocyclic cores, viz., isoquinoline and quinoline.
Collapse
Affiliation(s)
- Pallabi Halder
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
| | - Vishal Talukdar
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
| | - Ashif Iqubal
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
| | - Parthasarathi Das
- Department of Chemistry and Chemical Biology, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, India
| |
Collapse
|
4
|
Sun B, Zhuang X, Yin J, Zhang K, Zhao H, Jin C. Photoredox-Catalyzed Tandem Radical Cyclization/Hydroxylation for the Synthesis of 4-Hydroxyalkyl-3,3-difluoro-γ-lactams. J Org Chem 2022; 87:14177-14185. [PMID: 36173277 DOI: 10.1021/acs.joc.2c01710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The photoredox-catalyzed radical difluoroalkylation/cyclization/hydroxylation cascade reaction of various 2-bromo-2,2-difluoro-N-arylacetamides containing unactivated alkene moieties has been developed, providing green and efficient access to various 4-hydroxyalkyl-3,3-difluoro-γ-lactams. Control experiments confirmed a radical process, and inexpensive air acted as the sole hydroxy resource. In addition, the highlights of this protocol include good tolerance for a variety functional groups, lower photocatalyst loading, and ease of operation.
Collapse
Affiliation(s)
- Bin Sun
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Xiaohui Zhuang
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Jieli Yin
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Kesheng Zhang
- College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Haiyun Zhao
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| | - Can Jin
- Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China.,College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, P. R. China
| |
Collapse
|
5
|
Zhao HY, Zhou M, Zhang X. Palladium-Catalyzed Carbonylative Cross-Coupling of Difluoroalkyl Halides with Alkylboranes under 1 atm of CO. Org Lett 2021; 23:9106-9111. [PMID: 34806890 DOI: 10.1021/acs.orglett.1c03396] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A palladium catalyzed carbonylative cross-coupling of difluoroalkyl halides with alkyl-9-BBN under 1 atm of CO has been developed. The reaction shows broad substrate scope and high functional group tolerance, even toward complex pharmaceuticals, providing a general and straightforward method to access alkyldifluoroalkyl ketones. Preliminary mechanistic studies reveal that a radical pathway is involved in the reaction.
Collapse
Affiliation(s)
- Hai-Yang Zhao
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Minqi Zhou
- College of Chemistry, Henan Institute of Advanced Technology, Zhengzhou University, Zhengzhou 450001, China
| | - Xingang Zhang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| |
Collapse
|
6
|
Abstract
Transition metal-catalyzed carbonylation reactions represent a direct and atom-economical approach to introduce oxygen functionality into organic compounds, with CO acting as an inexpensive and readily available C1 feedstock. Despite the long history of carbonylation catalysis, including many processes that have been industrialized at bulk scale, there remain several challenges to tackle. For example, noble metals such as Pd, Rh, and Ir are typically used as catalysts for carbonylation reactions, rather than earth-abundant alternatives. Additionally, while carbonylation of C(sp2)-hybridized substrates (e.g., aryl halides) is well-known, carbonylation of unactivated alkyl electrophiles, especially where β-hydride elimination can compete with desired CO migratory insertion at the catalyst site, remains challenging for many systems. Recently, base metal catalysis based on Mn, Co, and other metals has enabled advances in carbonylative coupling of alkyl electrophiles, though the nucleophiles are often limited to alcohols or amines to generate esters or amides as products. Thus, we have targeted base metal-catalyzed carbonylative C-C and C-E (E = N, H, Si, B) coupling reactions as a method for approaching diverse carbonyl compounds of synthetic importance.Initially, we designed a heterobimetallic catalyst platform for carbonylative C-C coupling of alkyl halides with arylboronic esters (i.e., carbonylative Suzuki-Miyaura coupling) to generate aryl alkyl ketones. Subsequently, we developed multicomponent carbonylation reactions of alkyl halides using NHC-Cu catalysts (NHC = N-heterocyclic carbene). These reactions operate by radical mechanisms, converting alkyl halides into either acyl radical or acyl halide intermediates that undergo subsequent C-C or C-E coupling at the Cu site. This mechanistic paradigm is relatively novel in the metal-catalyzed carbonylation area, allowing us to discover a previously unexplored chemical space in carbonylative coupling catalysis. We have successfully developed the following reactions: (a) hydrocarbonylative coupling of alkynes with alkyl halides; (b) borocarbonylative coupling of alkynes with alkyl halides; (c) reductive aminocarbonylation of alkyl halides with nitroarenes; (d) reductive carbonylation of alkyl halides; (e) carbonylative silylation of alkyl halides; (f) carbonylative borylation of alkyl halides. These reactions provide a broad range of valuable products including ketones, allylic alcohols, β-borylenones, amides, alcohols, acylsilanes, and acylborons in an efficient manner. Notably, the preparation of some of these products has previously required multistep syntheses, harsh conditions, or specialized reagents. By contrast, the multicomponent coupling platform that we have developed requires only readily available building blocks and rapidly increases molecular complexity in a single synthetic manipulation.
Collapse
Affiliation(s)
- Li-Jie Cheng
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Neal P. Mankad
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| |
Collapse
|
7
|
Boudjelel M, Sadek O, Mallet-Ladeira S, García-Rodeja Y, Sosa Carrizo ED, Miqueu K, Bouhadir G, Bourissou D. Phosphine–Borane Ligands Induce Chemoselective Activation and Catalytic Coupling of Acyl Chlorides at Palladium. ACS Catal 2021. [DOI: 10.1021/acscatal.0c04287] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maxime Boudjelel
- Laboratoire Hetérochimie Fondamentale et Appliquée,
UMR 5069, CNRS/Université Paul Sabatier, 118 Route de Narbonne, Toulouse 31062 Cedex 09, France
| | - Omar Sadek
- Laboratoire Hetérochimie Fondamentale et Appliquée,
UMR 5069, CNRS/Université Paul Sabatier, 118 Route de Narbonne, Toulouse 31062 Cedex 09, France
| | - Sonia Mallet-Ladeira
- Institut de Chimie de Toulouse, FR 2599, 118 Route de Narbonne, Toulouse 31062 Cedex 09, France
| | - Yago García-Rodeja
- Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux, UMR 5254, CNRS/Université de Pau et des Pays de l’Adour, E2S UPPA, Hélioparc, 2 Avenue du Président Angot, Pau 64053 Cedex 09, France
| | - E. Daiann Sosa Carrizo
- Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux, UMR 5254, CNRS/Université de Pau et des Pays de l’Adour, E2S UPPA, Hélioparc, 2 Avenue du Président Angot, Pau 64053 Cedex 09, France
| | - Karinne Miqueu
- Institut des Sciences Analytiques et de Physico-Chimie pour l’Environnement et les Matériaux, UMR 5254, CNRS/Université de Pau et des Pays de l’Adour, E2S UPPA, Hélioparc, 2 Avenue du Président Angot, Pau 64053 Cedex 09, France
| | - Ghenwa Bouhadir
- Laboratoire Hetérochimie Fondamentale et Appliquée,
UMR 5069, CNRS/Université Paul Sabatier, 118 Route de Narbonne, Toulouse 31062 Cedex 09, France
| | - Didier Bourissou
- Laboratoire Hetérochimie Fondamentale et Appliquée,
UMR 5069, CNRS/Université Paul Sabatier, 118 Route de Narbonne, Toulouse 31062 Cedex 09, France
| |
Collapse
|
8
|
Zhao F, Ai H, Wu X. Radical Carbonylation under Low
CO
Pressure: Synthesis of Esters from Activated Alkylamines at Transition
Metal‐Free
Conditions. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000624] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Fengqian Zhao
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock Albert‐Einstein‐Straße 29a 18059 Rostock Germany
| | - Han‐Jun Ai
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock Albert‐Einstein‐Straße 29a 18059 Rostock Germany
| | - Xiao‐Feng Wu
- Leibniz‐Institut für Katalyse e.V. an der Universität Rostock Albert‐Einstein‐Straße 29a 18059 Rostock Germany
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian Liaoning 116023 China
| |
Collapse
|
9
|
Zhang Y, Ge J, Luo L, Yan SQ, Lai GW, Mei ZQ, Luo HQ, Fan XL. Difluoroisoxazolacetophenone: A Difluoroalkylation Reagent for Organocatalytic Vinylogous Nitroaldol Reactions of 1,2-Diketones. Org Lett 2020; 22:7952-7957. [PMID: 32991188 DOI: 10.1021/acs.orglett.0c02873] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Difluoroisoxazolacetophenone (DFIO) is developed as a new difluoroalkylation reagent that can be easily prepared from inexpensive starting materials. In situ remote C-C bond cleavage of DFIO affords γ,γ-difluoroisoxazole nitronate that undergoes base-catalyzed vinylogous nitroaldol additions to isatins, benzothiophene-2,3-dione, unsaturated-α-ketoesters, and cyclic 1,2-diketones. This organocatalytic debenzoate vinylogous nitroaldol reaction provides a new and mild approach for the preparation of various difluoroisoxazole-substituted 3-hydroxy-2-oxindoles.
Collapse
Affiliation(s)
- Yong Zhang
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Jin Ge
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Liang Luo
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Su-Qiong Yan
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Guo-Wei Lai
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Zu-Qin Mei
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Hai-Qing Luo
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Xiao-Lin Fan
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| |
Collapse
|
10
|
Yi X, Cao YF, Wang X, Xu H, Ban SR, Dai HX. Palladium-catalyzed fluoroacylation of (Hetero)arylboronic acid with fluorothioacetates at ambient temperature. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.151780] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
11
|
Fantinati A, Zanirato V, Marchetti P, Trapella C. The Fascinating Chemistry of α-Haloamides. ChemistryOpen 2020; 9:100-170. [PMID: 32025460 PMCID: PMC6996577 DOI: 10.1002/open.201900220] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 11/19/2019] [Indexed: 12/17/2022] Open
Abstract
The aim of this review is to highlight the rich chemistry of α-haloamides originally mainly used to discover new C-N, C-O and C-S bond forming reactions, and later widely employed in C-C cross-coupling reactions with C(sp3), C(sp2) and C(sp) coupling partners. Radical-mediated transformations of α-haloamides bearing a suitable located unsaturated bond has proven to be a straightforward alternative to access diverse cyclic compounds by means of either radical initiators, transition metal redox catalysis or visible light photoredox catalysis. On the other hand, cycloadditions with α-halohydroxamate-based azaoxyallyl cations have garnered significant attention. Moreover, in view of the important role in life and materials science of difluoroalkylated compounds, a wide range of catalysts has been developed for the efficient incorporation of difluoroacetamido moieties into activated as well as unactivated substrates.
Collapse
Affiliation(s)
- Anna Fantinati
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
| | - Vinicio Zanirato
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
| | - Paolo Marchetti
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
| | - Claudio Trapella
- Department of Chemical and Pharmaceutical SciencesUniversity of Ferrara, Via Fossato di Mortara 1744121FerraraItaly E-mail: V. Zanirato
| |
Collapse
|
12
|
Reina A, Krachko T, Onida K, Bouyssi D, Jeanneau E, Monteiro N, Amgoune A. Development and Mechanistic Investigations of a Base-Free Suzuki–Miyaura Cross-Coupling of α,α-Difluoroacetamides via C–N Bond Cleavage. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05159] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Antonio Reina
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 du CNRS, Université Lyon 1, 1 rue Victor Grignard, 69100 Villeurbanne, France
| | - Tetiana Krachko
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 du CNRS, Université Lyon 1, 1 rue Victor Grignard, 69100 Villeurbanne, France
| | - Killian Onida
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 du CNRS, Université Lyon 1, 1 rue Victor Grignard, 69100 Villeurbanne, France
| | - Didier Bouyssi
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 du CNRS, Université Lyon 1, 1 rue Victor Grignard, 69100 Villeurbanne, France
| | - Erwann Jeanneau
- Centre de Diffractométrie Henri Longchambon, Université Lyon 1, 5 rue de la Doua, 69100 Villeurbanne, France
| | - Nuno Monteiro
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 du CNRS, Université Lyon 1, 1 rue Victor Grignard, 69100 Villeurbanne, France
| | - Abderrahmane Amgoune
- Institut de Chimie et Biochimie Moléculaires et Supramoléculaires, UMR 5246 du CNRS, Université Lyon 1, 1 rue Victor Grignard, 69100 Villeurbanne, France
- Institut Universitaire de France (IUF), 75005 Paris, France
| |
Collapse
|
13
|
Chen Z, Lu F, Yuan F, Sun J, Du L, Li Z, Gao M, Shi R, Lei A. Photocatalytic decarboxylative coupling between α-oxocarboxylicacids and alkenes. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9616-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
14
|
Singh S, Sunoj RB. Mechanism and Origin of Enantioselectivity in Nickel-Catalyzed Alkyl–Alkyl Suzuki Coupling Reaction. J Phys Chem A 2019; 123:6701-6710. [DOI: 10.1021/acs.jpca.9b04284] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Sukriti Singh
- 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
| |
Collapse
|
15
|
Shimada N, Hirata M, Koshizuka M, Ohse N, Kaito R, Makino K. Diboronic Acid Anhydrides as Effective Catalysts for the Hydroxy-Directed Dehydrative Amidation of Carboxylic Acids. Org Lett 2019; 21:4303-4308. [PMID: 31120259 DOI: 10.1021/acs.orglett.9b01484] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The direct catalytic dehydrative amidation of β-hydroxycarboxylic acids with amines is described. A biphenyl-based diboronic acid anhydride with a B-O-B skeleton is shown to be an exceptionally effective catalyst for the reaction, providing β-hydroxycarboxylic amides in high to excellent yields with a low catalyst loading (minimum of 0.01 mol %, TON up to 7,500). This hydroxy-directed amidation shows excellent chemoselectivity and is applicable to gram-scale drug synthesis.
Collapse
Affiliation(s)
- Naoyuki Shimada
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences , Kitasato University , Tokyo 108-8641 , Japan
| | - Mai Hirata
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences , Kitasato University , Tokyo 108-8641 , Japan
| | - Masayoshi Koshizuka
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences , Kitasato University , Tokyo 108-8641 , Japan
| | - Naoki Ohse
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences , Kitasato University , Tokyo 108-8641 , Japan
| | - Ryoto Kaito
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences , Kitasato University , Tokyo 108-8641 , Japan
| | - Kazuishi Makino
- Laboratory of Organic Chemistry for Drug Development and Medical Research Laboratories, Department of Pharmaceutical Sciences , Kitasato University , Tokyo 108-8641 , Japan
| |
Collapse
|
16
|
Zhao HY, Gao X, Zhang S, Zhang X. Nickel-Catalyzed Carbonylation of Difluoroalkyl Bromides with Arylboronic Acids. Org Lett 2019; 21:1031-1036. [PMID: 30702294 DOI: 10.1021/acs.orglett.8b04070] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hai-Yang Zhao
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Xing Gao
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Shu Zhang
- School of Materials and Energy, University of Electronic Science and Technology of China, 2006 Xiyuan Avenue, West High-Tech Zone, Chengdu, Sichuan 611731, China
| | - Xingang Zhang
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| |
Collapse
|
17
|
Mondal T, Dutta S, De S, Koley D. Computational Exploration of Mechanistic Avenues in C-H Activation Assisted Pd-Catalyzed Carbonylative Coupling. J Org Chem 2019; 84:257-272. [PMID: 30525639 DOI: 10.1021/acs.joc.8b02630] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The detailed mechanism of the intermolecular Pd-catalyzed carbonylative coupling reaction between aryl bromides and polyfluoroarenes relying on C(sp2)-H activation was investigated using state-of-the-art computational methods (SMD-B3LYP-D3(BJ)/BS2//B3LYP-D3/BS1). The mechanism unveils the necessary and important roles of a slight excess of carbon monoxide: acting as a ligand in the active catalyst state, participating as a reactant in the carbonylation process, and accelerating the final reductive elimination event. Importantly, the desired carbonylative coupling route follows the rate-limiting C-H activation process via the concerted metalation-deprotonation pathway, which is slightly more feasible than the decarboxylative route leading to byproduct formation by 1.2 kcal/mol. The analyses of the free energies indicate that the choice of base has a significant effect on the reaction mechanism and its energetics. The Cs2CO3 base guides the reaction toward the coupling route, whereas carbonate bases such as K2CO3 and Na2CO3 switch toward an undesired decarboxylative path. However, K3PO4 significantly reduces the C-H activation barrier over the decarboxylation reaction barrier and can act as a potential alternative base. The positional influence of a methoxy substituent in bromoanisole and different substituent effects in polyfluoroarenes were also considered. Our results show that different substituents impose significant impact on the desired carbonylative product formation energetics. Considering the influence of several ligands leads to the conclusion that other phosphine and N-heterocyclic carbene, such as P nBuAd2 and IMes, can be used as an efficient alternative than the experimentally reported P tBu3 ligand exhibiting a clear preference for C-H activation (ΔΔ⧧ GLS) by 7.1 and 10.9 kcal/mol, respectively. We have also utilized the energetic span model to interpret the experimental results. Moreover, to elucidate the origin of activation barriers, energy decomposition analysis calculations were accomplished for the critical transition states populating the energy profiles.
Collapse
Affiliation(s)
- Totan Mondal
- Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741 246 , India
| | - Sayan Dutta
- Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741 246 , India
| | - Sriman De
- Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741 246 , India
| | - Debasis Koley
- Department of Chemical Sciences , Indian Institute of Science Education and Research (IISER) Kolkata , Mohanpur 741 246 , India
| |
Collapse
|
18
|
Abstract
A review of metal-catalysed radical carbonylation reactions is presented.
Collapse
Affiliation(s)
- Siling Zhao
- Department of Chemistry
- University of Illinois
- Chicago
- USA
| | | |
Collapse
|
19
|
|
20
|
Pitto-Barry A, Barry NPE. Controlled Release of Carbon Monoxide from a Pseudo Electron-Deficient Organometallic Complex. ACS OMEGA 2018; 3:15623-15627. [PMID: 30533578 PMCID: PMC6275942 DOI: 10.1021/acsomega.8b02154] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 10/30/2018] [Indexed: 06/09/2023]
Abstract
A 16-electron iridium organometallic is reacted with carbon monoxide to form an 18-electron CO-adduct. This CO-adduct is stable for weeks in the solid state, but quickly reverts to its parent 16-e complex in tetrahydrofuran solution, releasing CO(g). Using a simple methodology, we show that this gas can subsequently be used to perform a carbonylation reaction on another molecule.
Collapse
|
21
|
Ouyang XH, Song RJ, Li JH. Developments in the Chemistry of α-Carbonyl Alkyl Bromides. Chem Asian J 2018; 13:2316-2332. [DOI: 10.1002/asia.201800630] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 07/01/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Xuan-Hui Ouyang
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
- State Key Laboratory of Chemo/Biosensing and Chemometrics; Hunan University; Changsha 410082 China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle; Nanchang Hangkong University; Nanchang 330063 China
| |
Collapse
|