作者:Hugues Bienaymé、Alexia Longeau
DOI:10.1016/s0040-4020(97)00636-4
日期:1997.7
Suitable dienes, covalently connected to a Lewis acid, such a 1-dimethylaluminum dienolates, undergo very rapid and selective Diets-Alder cycloadditions with various dienophiles. For these processes, a cooperativity between enthalpic (dienophile activation) and entropic (reactants pre-association) factors is thought to be responsible for the high reactivities and regio/stereo-selectivities observed. (C) 1997 Elsevier Science Ltd.