An intramolecular hetero Diels–Alder reaction of α-(alkynylsiloxy)aldimine derivatives
作者:Tadashi Shimizu、Keiji Tanino、Isao Kuwajima
DOI:10.1016/s0040-4039(00)00936-9
日期:2000.7
Intramolecular hetero Diels–Alder reactions of α-(alkynylsiloxy)aldimine derivatives were developed. α-(Alkynylsiloxy)aldehydes, which were prepared from 1,2-alkanediols in two steps, were converted into the corresponding biscarbamates or N-arylimines. In the presence of BF3·OEt2, the biscarbamates afforded oxazine derivatives in high diastereoselectivity. On the other hand, quinoline derivatives were