Pd(ii)-catalyzed remote regiodivergent ortho- and meta-C-H functionalizations of phenylethylamines

Chem Sci. 2015 Oct 1;6(10):5595-5600. doi: 10.1039/c5sc01737h. Epub 2015 Jun 25.

Abstract

Site selectivity control is of vital importance in the direct functionalization of inert C-H bonds. Reported here is a novel example of remote regiodivergent ortho- and meta-C-H bond functionalizations of phenylethylamine derivatives by using a novel 2-cyanobenzoyl group as the original directing functionality, where the regioselectivity was adjusted by a methylation. The potential of the method was exemplified by sequential functionalizations of both ortho- and meta-C-H bonds of a phenylethylamine derivative in a streamlined manner.