Bronsted acid catalyzed radical addition to quinone methides

A fundamental quest for alkyl radical generation under mild conditions through photoinduced Bronsted acid catalysis is addressed. The optimized protocol does not require any organic dyes or transition metal photocatalyst. Under blue light irradiation with diphenyl phosphate as a catalyst and dihydropyridine derivatives as a radical source, functionalized arylmethane derivatives are obtained in high yield.

Automated summary

This research addresses the generation of alkyl radicals under mild conditions through photoinduced Brönsted acid catalysis. The optimized protocol does not require organic dyes or transition metal photocatalysts. Functionalized arylmethane derivatives are obtained in high yield under blue light irradiation with diphenyl phosphate as a catalyst and dihydropyridine derivatives as a radical source.