Tetrahedron Letters p. 4267 - 4270 (1987)
Update date:2022-08-02
Topics:
Rudorf, Wolf-Dieter
Schwarz, Ralf
The reaction of acetylenic ketones 1 with carbon disulfide in the basic system sodium hydride/dimethylformamide and subsequent intramolecular cyclization to 4H-thiopyran-4-ones 3 and 3(2H)-thiophenones 4 are reported.
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