Enantioselective Diels–Alder Reaction of 1,2-Dihydropyridines with Aldehydes Using β-Amino Alcohol Organocatalyst
作者:Yoshihito Kohari、Yuko Okuyama、Eunsang Kwon、Taniyuki Furuyama、Nagao Kobayashi、Teppei Otuki、Jun Kumagai、Chigusa Seki、Koji Uwai、Gang Dai、Tatsuo Iwasa、Hiroto Nakano
DOI:10.1021/jo501433c
日期:2014.10.17
The enantioselective Diels Alder reaction of 1,2-dihydropyridines with aldehydes using an easily prepared optically active beta-amino alcohol catalyst was found to provide optically active isoquinuclidines, an efficient synthetic intermediate of pharmaceutically important compounds such as oseltamivir phosphate, with a satisfactory chemical yield and enantioselectivity (up to 96%, up to 98% ee). In addition, the obtained highly optically pure isoquinuclidine was easily converted to an optically active piperidine having four successive carbon centers.