Thiourea-catalyzed 1,5-hydride transfer and ring closure sequences of o-dialkylamino-substituted nitrostyrenes: Synthesis of ring-fused tetrahydroquinoline derivatives

Thiourea-catalytic synthesis of tetrahydroquinolines has been achieved through a 1,5-hydride transfer/ring closure sequence. The feature of this research is a direct transformation of o-dialkylamino-substituted nitrostyrene derivatives into tetrahydroquinolines using a nitroalkene moiety as hydride acceptor in internal redox reactions.