Unexpected and Rich Chemistry of 4,5-Dichloro-1,2-dithiole-3-thione

Abstract

4,5-Dichloro-1,2-dithiole-3-thione was found to undergo 1,3-dipolar cycloaddition reactions with internal and terminal alkynes. The combination of these reactions together with new transformations afforded versatile heterocyclic systems including 1,3-dithioles, imino-1,3-dithietanes, 2-iminothiophen-3-ones, thienothiopyranthiones, and others.

Keywords:

• 1,3-Dipolar cycloaddition
• 1,2-dithiole-3-thione
• rearrangements