Clean Photochemical Synthesis Mediated by Radical-Radical Reactions:Radical Buffer or the Persistent Free Radical Effect?

摘要

A new synthetic methodology is reported that takes advantage of the persistent free radical effect(PFRE),where clean products can be obtained in good yields from radical cross-combination reactions,despite their reputation for being of little synthetic value and for resulting in complex mixtures;these problems can be avoided when the PFRE is used as a synthetic tool.