The asymmetric DielsâAlder reaction between N-acryloyloxazolidinone and cyclopentadiene and the Mukaiyama-aldol reaction between methylpyruvate and 1-phenyl-1-trimethylsilyloxyethene have been catalysed by heterogeneous copper(II)-bis(oxazoline)-based polymer immobilised ionic liquid phase (PIILP) systems generated from a range of linear and cross linked ionic polymers. In both reactions selectivity and ee were strongly influenced by the choice of polymer. A comparison of the performance of a range of Cu(II)-bis(oxazoline)-PIILP catalyst systems against analogous supported ionic liquid phase (SILP) heterogeneous catalysts as well as their homogeneous counterparts has been undertaken and their relative merits evaluated.
N-acryloyloxazolidinone 与
环戊二烯之间的不对称 DielsâAlder 反应,以及甲基
丙酮酸与 1-苯基-1-三甲基
硅氧基
乙烯之间的 Mukaiyama-aldol 反应,都是由一系列线性和交联离子聚合物生成的异质
铜(II)-双(
噁唑啉)基聚合物固定离子液相(
PIILP)系统催化的。在这两种反应中,聚合物的选择对选择性和ee有很大影响。对一系列
铜(II)-双(
噁唑啉)-
PIILP 催化剂体系与类似的支撑离子液相(SILP)异相催化剂及其均相催化剂的性能进行了比较,并评估了它们的相对优点。