Photoinduced Aromatization-Driven\nDeconstructive Fluorosulfonylation\nof Spiro Dihydroquinazolinones

A catalyst-free photoinduced deconstructive fluorosulfonylation\ncascade of spiro dihydroquinazolinones with DABSO and NFSI is reported.\nThis protocol features mild reaction conditions, good yields and excellent\nfunctional group tolerance, providing a practical approach to the\nquinazolin-4(1<i>H</i>)-one-functionalized aliphatic sulfonyl\nfluorides. In addition, the ease of gram-scale synthesis and the versatility\nof the SuFEx exchange highlight the application potential of this\nprotocol.