
																
																	Mechanistic study on the Rh(III)-catalyzed synthesis of indolines via selective O-atom transfer of arylnitrones: Origins of the regioselectivity and the improved yield with pivalic acid additive
																
																
																
															Keywords: C-H activation; O-atom transfer; Rh(III) catalysts; Regioselectivity; N-oxide; Alkyne insertion;