Jing-Xin Liu, Qing-Qing Zhou, Jin-Gen Deng and Ying-Chun Chen
Org. Biomol. Chem., 2013,11, 8175-8178
DOI:
10.1039/C3OB41698D,
Communication
An asymmetric normal-electron-demand aza-Diels–Alder cycloaddition of 2-aryl-3H-indol-3-ones and 2,4-dienals was explored via trienamine catalysis of a chiral secondary amine. Multifunctional tricyclic polyhydropyrido[1,2-a]indoles were efficiently constructed in good stereoselectivity (up to 92% ee, >19 : 1 dr).