The incorporation of sulfonyl fluoride groups into molecules has been proven effective
in enhancing their biological activities or introducing new functions. Herein, a transition-metal-free
and visible-light-mediated radical tandem cyclization of unsaturated carboxylic acid
is reported. This affords a facile access to FSO2-functionalized γ-lactones efficiently, which are critical structural motifs widely
present in biologically active molecules.
Key words
FSO
2 radical - photoredox - γ-lactone - cyclization - difunctionlization