盐添加剂作为活性增强剂：一种在丙交酯聚合中获得杂金属协同作用的简单策略。

Salt additives as activity boosters: a simple strategy to access heterometallic cooperativity in lactide polymerisation.

机构信息

EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.

出版信息

Chem Commun (Camb). 2022 Feb 1;58(10):1609-1612. doi: 10.1039/d1cc06594g.

Abstract

Inorganic salt additives can activate carbonyl groups towards organic addition reactions. Here, we translate this concept to ring-opening polymerisation for the first time, generating heterometallic ProPhenol catalysts , which show similar activity enhancements to pre-formed heterometallic complexes. Extremely high activities are observed, with K/Mg and K/Ca combinations converting >85 eq. lactide in 5 s at room temperature.

摘要

无机盐添加剂可以激活羰基，促进有机加成反应。在这里，我们首次将这一概念转化为开环聚合反应，生成杂金属 ProPhenol 催化剂，其活性增强效果与预形成的杂金属配合物相当。观察到极高的活性，K/Mg 和 K/Ca 组合在室温下 5 秒内可转化超过 85 当量的丙交酯。