We have developed a practical “in situ immobilization” strategy where pyrene-tagged, multicomponent chiral catalysts (MCCs) are anchored onto graphene materials via π–π stacking interactions. The resulting novel hybrid catalysts showed excellent catalytic activity and enantioselectivity towards the hydrogenation of dehydroamino acid esters. Moreover, the catalysts demonstrated enhanced stability as they can be readily recycled and reused for up to thirteen runs without obvious deterioration of reactivity or enantioselectivity.

中文翻译：

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通过非共价相互作用将多组分手性催化剂（MCC）“原位固定”，用于非均相不对称氢化反应

我们已经开发了一种实用的“原位固定”策略，其中pyr标记的多组分手性催化剂（MCC）通过π-π堆积相互作用固定在石墨烯材料上。所得的新型杂化催化剂对脱氢氨基酸酯的氢化显示出优异的催化活性和对映选择性。此外，该催化剂表现出增强的稳定性，因为它们可以容易地再循环和再使用多达十三次，而反应活性或对映选择性没有明显下降。