A catalyst and method for performing a Michael addition reaction between a &bgr;-dicarbonyl compound with a cyclic or acyclic enone, where the catalyst comprises a substituted or unsubstituted lanthanum-linked BINOL complex, e.g. a (R,R)-La-linked-BINOL complex (1), are described.
1
The catalyst is stable in air, is readily separated from the reaction mixtures and may be reused if desired.
本发明描述了一种在&bgr;-二羰基化合物与环状或无环状烯酮之间进行迈克尔加成反应的催化剂和方法,其中催化剂包括取代或未取代的
镧系BINOL络合物,例如(R,R)-La-Linked-BINOL络合物(1)。
1
催化剂在空气中很稳定,很容易从反应混合物中分离出来,如果需要还可以重复使用。