Solid‐Supported Tetrahydropyran‐Based Hybrid Dipeptide Catalysts for Michael Addition of Aldehydes to Nitrostyrenes
作者:Irma García‐Monzón、Jorge Borges‐González、Tomás Martín
DOI:10.1002/adsc.202200477
日期:2022.8.16
homogeneous catalysts onto a solid support is a step towards a more sustainable chemistry. The recovery and reuse of catalysts is extremely important from a practical, economic and environmental point of view. In this regards, we report a series of polymer-supported tetrahydropyran-based hybrid dipeptides that serve as active catalysts for the enantioselective Michael addition of aldehydes to β-nitrostyrenes
均相催化剂在固体载体上的多相化是迈向更可持续化学的一步。从实用、经济和环保的角度来看,催化剂的回收和再利用极为重要。在这方面,我们报道了一系列聚合物负载的四氢吡喃基杂化二肽,它们可作为醛对 β-硝基苯乙烯的对映选择性迈克尔加成的活性催化剂。这些负载型催化剂的设计考虑了催化剂和固体载体之间的最佳锚定位置和方向。此外,还研究了接头长度对催化效率的影响。催化剂允许以 76-98% 的产率和 94-97% 的对映体过量转化各种底物。详细的失活研究提供了重要信息,