A series of chiral polysulfonate cyclohexyldiamine-Ni(II) catalysts were prepared via sulfur (VI) fluoride exchange click-reactions. The catalysts exhibited good catalytic activity and enantioselectivity in the Michael addition of malonates to nitroalkenes. The excellent recyclability of the catalysts was demonstrated via the reuse of the privileged catalyst 7a for ten times. The results provide a new strategy for the immobilization of chiral homogeneous catalysts.

中文翻译：

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聚磺酸盐负载的手性二胺镍催化剂：合成与应用

通过氟化硫（VI）交换点击反应制备了一系列手性聚磺酸盐环己基二胺-Ni（II）催化剂。在丙二酸酯向硝基链烯的迈克尔加成中，催化剂表现出良好的催化活性和对映选择性。通过将特权催化剂7a再利用十次，证明了催化剂的优异的再循环性。结果为手性均相催化剂的固定化提供了新的策略。