Abstract
A catalytic methodology involving terminal alkynes, elemental sulfur, and three-membered heterocycles has been described. This domino transformation serves as a useful method for the synthesis of oxathiolane and thiazolidine derivatives from the readily available starting materials. In situ generated copper acetylides reacted with elemental sulfur and oxiranes or aziridines in the presence of N-methylpiperidine as sulfur activating agent to form synthetically important heterocycles.
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