Visible-light-promoted divergent functionalizations of methylenecyclopropanes

Simple and convenient visible-light-promoted radical monofunctionalization and difunctionalization of methylenecyclopropanes via ring-opening and cyclization processes have been developed for the syntheses of difluoromethyl compounds, alkyl compounds, halides, and sulfonyl compounds in moderate to excellent yields. The methodologies feature a wide substrate scope and tolerate various functional groups. A possible radical mechanism has been investigated and proven as a single electron transfer (SET) procedure.

Automated summary

A new synthetic method has been developed for the synthesis of various compounds via visible-light-promoted radical monofunctionalization and difunctionalization of methylenecyclopropanes. The reaction conditions are simple and convenient, with moderate to excellent yields, a wide substrate scope, and tolerance for different functional groups. The possible radical mechanism has been investigated and proven to be a single electron transfer (SET) procedure.