Oxidative C-H functionalization of N-carbamoyl 1,2-dihydroquinolinesElectronic supplementary information (ESI) available. See DOI: 10.1039/c7ob01793f

A modular and efficient method for the synthesis of α-substituted 1,2-dihydroquinolines is described. Under mild metal-free conditions, readily available N -carbamoyl 1,2-dihydroquinolines undergo oxidative C-H alkynylation, alkenylation, and allylation with a range of potassium trifluoroborates using TEMPO oxoammonium salt as an oxidant. A modular and efficient method for the synthesis of α-substituted 1,2-dihydroquinolines through an oxidative C-H functionalization strategy is described.