Polystyrene-Supported TRIP: A Highly Recyclable Catalyst for Batch and Flow Enantioselective Allylation of Aldehydes
作者:Lidia Clot-Almenara、Carles Rodríguez-Escrich、Laura Osorio-Planes、Miquel A. Pericàs
DOI:10.1021/acscatal.6b02621
日期:2016.11.4
The widely applicable TRIP phosphoric acid catalyst has been immobilized on polystyrene using a copolymerization-based strategy. The resin (PS-TRIP) has proven to be highly active and enantioselective in the asymmetric allylboration of aldehydes. Moreover, it has shown to be extremely robust, as it can be reused for 18 times, after which it still retained its activity. Lastly, to further prove the
广泛适用的TRIP磷酸催化剂已使用基于共聚的策略固定在聚苯乙烯上。事实证明,该树脂(PS-TRIP)在醛的不对称烯丙基硼化反应中具有很高的活性和对映选择性。而且,它已经显示出非常强大的功能,因为它可以重复使用18次,之后仍然保持其活动状态。最后,为了进一步证明固定化的好处,已经进行了长达28小时的连续流动实验,其收率和ee很高。