Radical-mediated sulfonylation relay of alkyl alkynes/alkenes and electron-deficient alkenes to access vinyl and alkyl sulfones

A radical-mediated sulfonylation relay of alkyl alkynes/alkenes with electron-deficient alkenes using Na 2 S 2 O 4 as a linker is developed to synthesize highly selective ( Z )-vinyl and alkyl sulfones under a metal-free catalyzed system.