Yanai H, Kurogi S, Hoshikawa S, Matsumoto T. HFIP-Mediated Desulfinative Friedel-Crafts Cyclobutenylation Reaction.
Chemistry 2024;
30:e202400843. [PMID:
38639573 DOI:
10.1002/chem.202400843]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/09/2024] [Accepted: 04/19/2024] [Indexed: 04/20/2024]
Abstract
In 1,1,1,3,3,3-hexafluoroisopropyl alcohol (HFIP), gem-bis(triflyl)cyclobutenes, which can be prepared by the (2+2) cycloaddition reaction of Tf2C=CH2 with alkynes, underwent desulfination to generate the corresponding cyclobutenyl cation. This unique reactivity was successfully applied to the Friedel-Crafts type cyclobutenylation reaction of several (hetero)aromatic compounds.
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