Bu 4 NI-Catalyzed Dehydrogenative Coupling of Diaryl Phosphinic Acids with C(sp 3 )-H Bonds of Arenes.

An efficient phosphorylation of C(sp3 )-H bonds of arenes with diaryl phosphinic acids via Bu4 NI-catalyzed dehydrogenative coupling has been developed. This transformation proceeds efficiently under transition-metal-free reaction conditions and represents a straightforward method to prepare valuable organophosphorus compounds from readily available arenes and diaryl phosphinic acids.