Petcu AS, Lázaro-Milla C, Alonso JM, Almendros P. Unveiling the Use of 1,1-Bis(triflyl)ethylene as CF
3SO
2CH═CH
2 Source with the Assistance of (
n-Bu)
4NF: Synthesis of 3-[(Trifluoromethyl)sulfonyl]cyclobut-1-enes.
Org Lett 2024;
26:4560-4565. [PMID:
38767989 PMCID:
PMC11148847 DOI:
10.1021/acs.orglett.4c01514]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 05/14/2024] [Accepted: 05/17/2024] [Indexed: 05/22/2024]
Abstract
Allylic sulfone-embedded cyclobutenes have been prepared in one pot from alkynes. The carbocycle and the alkenyl sulfone moieties were installed through consecutive bis(triflyl)cyclobutenylation of a triple bond and tetra-n-butylammonium fluoride (TBAF)-assisted hydrodesulfonylation of an allylic bis(sulfone). It is noteworthy that 1,1-bis(triflyl)ethylene acts as a CF3SO2CH═CH2 source for the first time.
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