This work presented the synthesis and characterization of new ionic liquid-coordinating ruthenium complexes. The resulting ruthenium complexes exhibited not only excellent thermoregulated phase-separation behavior but also highly catalytic activity and enantioselectivity for the asymmetric hydrogenation with molecular hydrogen. The thermoregulated ionic liquid catalyst was highly resistant to leaching and was recycled consecutively for six times without significant loss of catalytic activity and enantioselectivity. The presence of RuH species revealed that NH and a RuH unit, involved in the hydride transfer process, were of great importance in the present catalytic system.

这项工作介绍了新型的离子液体配位钌配合物的合成和表征。所得钌配合物不仅表现出优异的温度调节相分离行为，而且还表现出高度的催化活性和对分子氢不对称氢化的对映选择性。温度调节的离子液体催化剂具有极高的抗浸出性，可连续循环六次而不会显着降低催化活性和对映选择性。Ru H物种的存在表明，在氢化物转移过程中涉及的NH和Ru H单元在本催化体系中非常重要。