Hydroarylation of alkynes dual -C-H functionalization of diaryl amines on a dicopper(,) platform

A pyridine and morpholine-functionalized dicopper( i , i )-NHC complex ( 1 ) features both terminal and bridging coordination modes of NHC within the same molecule, and catalyzes dual ortho -C-H functionalization of diaryl amines for the hydroarylation of alkynes. A bimetallic construct in catalyst 1 allows sequential activation of ortho -C-H bonds of two aryl units to furnish a wide variety of 9,10-dihydroacridine derivatives without the explicit use of a directing group. A NHC-supported dicopper( i , i ) catalyst is utilised for dual ortho -C-H functionalization of a diarylamine with an alkyne resulting in the sp 3 -C product from sp-C through regioselective annulation.