Meyer CF, Hell SM, Misale A, Trabanco AA, Gouverneur V. Hydrodifluoromethylation of Alkenes with Difluoroacetic Acid.
Angew Chem Int Ed Engl 2019;
58:8829-8833. [PMID:
31020767 DOI:
10.1002/anie.201903801]
[Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Indexed: 12/15/2022]
Abstract
A facile method for the regioselective hydrodifluoromethylation of alkenes is reported using difluoroacetic acid and phenyliodine(III) diacetate in tetrahydrofuran under visible-light activation. This metal-free approach stands out as it uses inexpensive reagents, does not require a photocatalyst, and displays broad functional group tolerance. The procedure is also operationally simple and scalable, and provides access in one step to high-value building blocks for application in medicinal chemistry.
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