A triflimide-activated oxazaborolidine catalyst successfully promoted the asymmetric Diels−Alder reaction of 9-methylanthracene with methacrolein in high regio- and enantioselectivity. The cycloadduct obtained was subsequently used as a chiral template to access secondary and tertiary allylic alcohols in good to high enantiomeric excess via a cycloreversion by flash vacuum pyrolysis.
Triflimide活化的
恶唑硼烷催化剂在高区域和对映体选择性下,成功地促进了
9-甲基蒽与甲基
丙烯醛的不对称Diels-Alder反应。随后将获得的环加合物用作手性模板,以通过快速真空热解通过环还原来获得对映体过量至高对映体过量的仲和叔烯丙基醇。