More recently, two examples of radical cyclizations with vinyl silanes initiated by photoredox catalysis have been shown. Alkene group transfer was achieved with electronically activated alkyl iodides using an Ir(III) photocatalyst and irradiation with blue light (Scheme 1c). Similarly, irradiation of an Ir(III) photocatalyst resulted in alkene group transfer of tertiary, activated alkyl bromides (Scheme 1d). Beyond these successful initial demonstrations, a general method for group transfer reactions of silicon-tethered alkenes and alkynes has not yet been reported.