Visible-Light-Induced Radical gem -Iodoallylation of 2,2,2-Trifluorodiazoethane.

A visible-light-induced radical gem -iodoallylation of CF 3 CHN 2 was developed under mild conditions, delivering a variety of α-CF 3 -substituted homoallylic iodide compounds in moderate to excellent yields. The transformation features broad substrate scope, good functional group compatibility, and operational simplicity. The described protocol provides a convenient and attractive tool to apply CF 3 CHN 2 as CF 3 -introduction reagent in radical synthetic chemistry.