Fig. 7: Preliminary mechanism studies.
From: Photocatalyzed cycloaromatization of vinylsilanes with arylsulfonylazides

a Photocatalyzed cycloaromatization of vinylsilane 1a with sulfonylhydrazine 10. b Radical intermediate trapping reaction by TEMPO. c Photocatalyzed coupling-cyclization of vinylether 1u with arylsulfonylazide 2h. d Photocatalyzed coupling-cyclization of vinylsilane 1a with ortho-methylphenylsulfonyl azide 2s.