Photoredox‐Catalyzed Deconstructive Thiolation and Selenylation of Pro‐Aromatic Carbocycles

Photoredox‐catalyzed aromatization‐driven deconstructive thiolation and selenylation of spiro‐dihydroquinazolinones are presented. This method, which involves C‐C bond cleavage and C‐S or Se bond formation, provides a facile approach to synthesizing remote and site‐specific thiolated and selenated quinazolin‐4(3H)‐ones with good yields and functional group compatibility. A probable radical pathway is proposed for this transformation.