Introduction of imidazolium ionic liquid pattern to the catalyst not only avoided catalyst leaching but also increased the stability of catalyst in ionic liquid, and thus, the Rh-complex of 1,4-bisphosphine bearing two imidazolium salt moieties was successfully immobilized in an ionic liquid and reused several times for the hydrogenation of an enamide without significant loss of catalytic efficiency.
因此,含有两个
咪唑盐分子的 1,4-
二膦 Rh 复合物被成功固定在
离子液体中,并多次用于烯酰胺的氢化反应,而催化效率没有明显下降。