Rh(II)-Catalyzed 1,3-Dichalcogenation of Vinyl Carbenes via 1,4-Migratory Rearrangement of Sulfur/Selenium Ylides

Key Points

• The aim is to explore Rh(II)-catalyzed dichalcogenation of vinyl carbenes using stable hydrazones.
• Utilized stable hydrazones as precursors for vinyl carbenes.
• Implemented disulfides and diselenides as sources of chalcogens.
• Monitored regio- and stereoselectivity under mild reaction conditions.
• Conducted mechanistic studies to elucidate the reaction pathway.
• The reaction achieved excellent regio- and stereoselectivities.
• Mechanistic studies indicated a concerted pathway for chalcogen migration.
• The approach showcased efficiency under mild conditions.