The formation of a transient Michael adduct, triggering an
in-situ isomerization of the heterodiene, is postulated to explain
the reversal of the diastereoselectivity of high pressure-promoted
hetero-DielsâAlder reactions carried out in the presence of
pyridine.
短暂的迈克尔加合物的形成,引发
杂二烯的原位异构化,假设可以解释
高压促进的非对映选择性的逆转
杂狄尔斯-阿尔德反应在存在下进行
吡啶。