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Picard B, Fukuyama T, Ryu I. Phosphine-Free Aminocarbonylation Using Pd/DBU Catalyst: Carbonylative Coupling of Aryl Iodides and Amines. J Org Chem 2022; 88:5220-5225. [PMID: 36525565 DOI: 10.1021/acs.joc.2c02369] [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
An improved carbonylation method allowing amide bond formation between aryl iodides and aromatic amines is presented. In contrast to usual methods based on Pd catalysis, this method does not require a phosphine ligand. The catalyst system simply employs bis(dibenzylideneacetone)palladium (0.5 mol %) and DBU (10 mol %). The method was applied to the synthesis of various aromatic amides from aryl iodides and amines, and was scaled to gram order synthesis under as low as 1 atm of carbon monoxide.
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Affiliation(s)
- Baptiste Picard
- Organization for Research Promotion, Osaka Metropolitan University, Sakai, Osaka 599-8531, Japan
| | - Takahide Fukuyama
- Department of Chemistry, Graduate School of Science, Osaka Metropolitan University, Sakai, Osaka 599-8531, Japan
| | - Ilhyong Ryu
- Organization for Research Promotion, Osaka Metropolitan University, Sakai, Osaka 599-8531, Japan
- Department of Applied Chemistry, National Yang Ming Chiao Tung University (NYCU), Hsinchu 30010, Taiwan
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Lu B, Xu M, Qi X, Jiang M, Xiao WJ, Chen JR. Switchable Radical Carbonylation by Philicity Regulation. J Am Chem Soc 2022; 144:14923-14935. [PMID: 35939790 DOI: 10.1021/jacs.2c06677] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Carbonylation reactions involving CO as readily available C1 synthons have become one of the most important tools for the construction of carbonyl compounds from feedstock chemicals. Despite numerous catalytic methods for carbonylation reactions proceeding via ionic or radical pathways, an inherent limitation to these methods is the need to control switchable single and double carbonylative formation of value-added products from the same and simple starting materials. Here, we describe a new strategy that exploits photoredox catalysis to regulate the philicity of amine coupling partners to drive switchable radical carbonylation reactions. In double carbonylation, amines were first transformed into nitrogen radical cations by single-electron transfer-oxidation and coupled with CO to form carbamoyl radicals, which further underwent radical cross-coupling with the incipient cyanoalkyl acyl radicals to afford the double carbonylation products. Upon the addition of stoichiometric 4-dimethylaminopyridine (DMAP), DMAP competitively traps the initially formed cyanoalkyl acyl radical to form the relatively stabilized cyanoalkyl acyl-DMAP salts that engaged in the subsequent substitution with the nucleophilic amines to produce the single carbonylation products. The reaction proceeded smoothly with excellent selectivity in the presence of various amine nucleophiles at room temperature, generating valuable amides and α-ketoamides in a versatile and controlled fashion. Combined experimental and computational studies provided mechanistic insights into the possible pathways.
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Affiliation(s)
- Bin Lu
- Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Minghao Xu
- Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Xiaotian Qi
- Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, P. R. China
| | - Min Jiang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, P. R. China
| | - Wen-Jing Xiao
- Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jia-Rong Chen
- Key Laboratory of Pesticides & Chemical Biology Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China
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Kawamoto T, Fukuyama T, Picard B, Ryu I. New directions in radical carbonylation chemistry: combination with electron catalysis, photocatalysis and ring-opening. Chem Commun (Camb) 2022; 58:7608-7617. [PMID: 35758516 DOI: 10.1039/d2cc02700c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Radical carbonylation offers potent methods for introducing carbon monoxide into organic molecules. This feature article focuses on our current efforts to develop new strategies for radical carbonylation, which include electron-transfer carbonylation, site-selective C(sp3)-H carbonylation by a photocatalyst and ring-opening carbonylation.
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Affiliation(s)
- Takuji Kawamoto
- Department of Applied Chemistry, Yamaguchi University, Ube, Yamaguchi, 755-8611, Japan
| | - Takahide Fukuyama
- Department of Chemistry, Osaka Metropolitan University (OMU), Sakai, Osaka, 599-8531, Japan
| | - Baptiste Picard
- Organization for Research Promotion, Osaka Metropolitan University (OMU), Sakai, Osaka, 599-8531, Japan.
| | - Ilhyong Ryu
- Organization for Research Promotion, Osaka Metropolitan University (OMU), Sakai, Osaka, 599-8531, Japan. .,Department of Applied Chemistry, National Yang Ming Chiao Tung University (NYCU), Hsinchu, 30010, Taiwan
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Wang P, Yang J, Sun K, Neumann H, Beller M. A general synthesis of aromatic amides via palladium-catalyzed direct aminocarbonylation of aryl chlorides. Org Chem Front 2022. [DOI: 10.1039/d2qo00251e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Aryl amines made easy by palladium-catalyzed aminocarbonylation of aryl chlorides.
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Affiliation(s)
- Peng Wang
- Leibniz-Institut für Katalyse e. V., Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Ji Yang
- Leibniz-Institut für Katalyse e. V., Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Kangkang Sun
- Leibniz-Institut für Katalyse e. V., Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Helfried Neumann
- Leibniz-Institut für Katalyse e. V., Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz-Institut für Katalyse e. V., Albert-Einstein-Strasse 29a, 18059 Rostock, Germany
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