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Leadbeater NE, Politano F, Brydon WP. Oxidation of α-Trifluoromethyl and Nonfluorinated Secondary Alcohols to Ketones Using a Nitroxide Catalyst. SYNTHESIS-STUTTGART 2023. [DOI: 10.1055/s-0042-1752398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
AbstractA methodology for the oxidation of α-trifluoromethyl alcohols to the corresponding trifluoromethyl ketones is presented. A catalytic quantity of a nitroxide is used, and potassium persulfate serves as the terminal oxidant. The methodology proves effective for aromatic, heteroaromatic, and conjugated alcohol substrates. It can be extended to nonfluorinated secondary alcohols and, in this case, can be applied to a range of aromatic, heteroaromatic, and aliphatic alcohols.
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Affiliation(s)
| | - Fabrizio Politano
- Department of Chemistry, University of Connecticut
- Instituto de Investigaciones en Físico Química de Córdoba (INFIQC)-CONICET, Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria
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Lombardi L, Cerveri A, Giovanelli R, Castiñeira Reis M, Silva López C, Bertuzzi G, Bandini M. Direct Synthesis of α-Aryl-α-Trifluoromethyl Alcohols via Nickel Catalyzed Cross-Electrophile Coupling. Angew Chem Int Ed Engl 2022; 61:e202211732. [PMID: 36161744 PMCID: PMC9828748 DOI: 10.1002/anie.202211732] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Indexed: 01/12/2023]
Abstract
A nickel-catalyzed reductive cross-electrophile coupling between the redox-active N-trifluoroethoxyphthalimide and iodoarenes is documented. The protocol reproduces a formal arylation of trifluoroacetaldehyde under mild conditions in high yields (up to 88 %) and with large functional group tolerance (30 examples). A combined computational and experimental investigation revealed a pivotal solvent assisted 1,2-Hydrogen Atom Transfer (HAT) process to generate a nucleophilic α-hydroxy-α-trifluoromethyl C-centered radical for the Csp2 -Csp3 bond forming process.
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Affiliation(s)
- Lorenzo Lombardi
- Dipartimento di Chimica “Giacomo Ciamician”Alma Mater Studiorum—Università di BolognaVia Selmi 240126BolognaItaly,Center for Chemical Catalysis—CAlma Mater Studiorum—Università di BolognaVia Selmi 240126BolognaItaly
| | - Alessandro Cerveri
- Dipartimento di Chimica “Giacomo Ciamician”Alma Mater Studiorum—Università di BolognaVia Selmi 240126BolognaItaly
| | - Riccardo Giovanelli
- Dipartimento di Chimica “Giacomo Ciamician”Alma Mater Studiorum—Università di BolognaVia Selmi 240126BolognaItaly,Center for Chemical Catalysis—CAlma Mater Studiorum—Università di BolognaVia Selmi 240126BolognaItaly
| | | | | | - Giulio Bertuzzi
- Dipartimento di Chimica “Giacomo Ciamician”Alma Mater Studiorum—Università di BolognaVia Selmi 240126BolognaItaly,Center for Chemical Catalysis—CAlma Mater Studiorum—Università di BolognaVia Selmi 240126BolognaItaly
| | - Marco Bandini
- Dipartimento di Chimica “Giacomo Ciamician”Alma Mater Studiorum—Università di BolognaVia Selmi 240126BolognaItaly,Center for Chemical Catalysis—CAlma Mater Studiorum—Università di BolognaVia Selmi 240126BolognaItaly
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Liu B, Chen X, Pei C, Li J, Zou D, Wu Y, Wu Y. Ruthenium-Catalyzed ortho-C–H Hydroxyfluoroalkylation of Arenes with Fluorinated Alcohols. J Org Chem 2022; 87:14364-14373. [DOI: 10.1021/acs.joc.2c01797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bo Liu
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Xiaoyu Chen
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Congcong Pei
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Jingya Li
- Tetranov Biopharm, LLC, Zhengzhou 450052, People’s Republic of China
| | - Dapeng Zou
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Yangjie Wu
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
| | - Yusheng Wu
- College of Chemistry, Green Catalysis Center, Henan Key Laboratory of Chemical Biology and Organic Chemistry, Zhengzhou University, Zhengzhou 450001, People’s Republic of China
- Tetranov International, Inc., 100 Jersey Avenue, Suite A340, New Brunswick, New Jersey 08901, United States
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Kani R, Inuzuka T, Kubota Y, Funabiki K. Synthesis of 1‐Trifluoromethylated Propargyl Alcohols by Two Successive Reactions of Cyclopentylmagnesium Bromide in a One‐Pot Manner. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Ryunosuke Kani
- Department of Chemistry and Biomolecular Science Gifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Toshiyasu Inuzuka
- Division of Instrumental Analysis Life Science Research Center Gifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Yasuhiro Kubota
- Department of Chemistry and Biomolecular Science Gifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Kazumasa Funabiki
- Department of Chemistry and Biomolecular Science Gifu University 1-1 Yanagido Gifu 501-1193 Japan
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Garcia JA, Yukimoto M, Mizuhata Y, Tokitoh N. A unique 1,4-silyl group migration from carbon to carbon: Formation of benzylic silane in the reaction of sterically hindered benzylic telluride with alkyllithium. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.122119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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