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Scheme of selective C–H bond activation controlled by metal–organic coordination interaction. (a) C–H bond activation and dehydrogenative homocoupling occurring on the ortho-sites of a pyridine group. Two different types of products can be obtained considering planar restriction. (b) Two types of product configuration generalized from 1,3-BPyB and 1,4-BPyB. Products of type-I configurations can be selectively synthesized by the coordination-restricted effect.
