INTRAMOLECULAR MICHAEL AND ANTI-MICHAEL ADDITIONS OF THIOLATE TO CONJUGATED ACETYLENIC KETONES
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.
Rudorf, Wolf-Dieter,Schwarz, Ralf
p. 4267 - 4270
(2007/10/02)
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