The synthesis of valuable 2a,3-dihydrobenzo[]indolines was successfully achieved by combining IPr-Pd-Oxa-catalyzed cross-coupling and proton-induced hydroarylation in a one-pot method. In situ-generated alkynyl-functionalized 3,3-disubstituted indolines were proved as the key intermediate, bearing a broad scope of substrates with diverse functional groups and electronic properties.
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