Cui J, Tong Y, Li Y. Synthesis of Trifluoromethylated γ-Lactams through Radical Cascades of
N-Cyano Alkenes with CF
3SO
2Na.
J Org Chem 2022;
87:16090-16098. [PMID:
36370090 DOI:
10.1021/acs.joc.2c01775]
[Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
We report herein a facile strategy to synthesize trifluoromethylated γ-lactams through trifluoromethylcarbonylation of N-cyano alkenes using readily available CF3SO2Na as the CF3 radical source. A range of trifluoromethyl-containing γ-lactams was obtained in good yields. This transition-metal-free protocol is demonstrated with mild conditions, broad substrate scope, good functional group tolerance, convenient reagents, and an easy-to-handle operating system.
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