Asymmetric synthesis of 4H-1,3-oxazines: enantioselective reductive cyclization of N-acylated β-amino enones with trichlorosilane catalyzed by chiral Lewis bases
作者:Masaharu Sugiura、Mako Kumahara、Makoto Nakajima
DOI:10.1039/b905102c
日期:——
N-Acylated beta-amino enones reductivelycyclize by treatment with trichlorosilane and a chiral Lewis base catalyst to afford optically active 4H-1,3-oxazines, which can be transformed to other chiral compounds without racemization.