Consecutive O−S/N−S Bond Cleavage in Gold‐Catalyzed Rearrangement Reactions of Alkynyl N‐Sulfinylimines

This is the authors' abstract. We don't add key points for this paper.

Gold-catalyzed reactions of alkynyl N-sulfinylimines were used to produce the corresponding 2H-azirines possessing sulfenyl and acyl groups at the 3-position of the azirine ring in good to excellent yields. These reactions involved internal transfer of the sulfinyl oxygen atom to form a thiooxime intermediate tethered to an α-oxo gold carbene moiety. Subsequent insertion of the carbene into the N-S bond resulted in ring construction.