期刊
ORGANIC LETTERS
卷 13, 期 19, 页码 5330-5333出版社
AMER CHEMICAL SOC
DOI: 10.1021/ol202196y
关键词
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资金
- NSERC of Canada
- RTI
A heretofore unknown LDA-induced conversion of benzyl 1-alkynyl sulfones to 1H-2-benzothiopyran-S,S-dioxides is demonstrated. A benzyl carbanion, accessible by two means, is thought to cyclize by temporary disruption of aromaticity. Key intermediates are observed by ReactIR analysis. Thiophene derivatives are also amenable to cyclization, forming 7H-thieno[2,3-c]thiopyran-S,S-dioxides.
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