Alkali and Alkaline Earth Metal Complexes as Versatile Catalysts for Ring-Opening Polymerization of Cyclic Esters,The Chemical Record

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Alkali and Alkaline Earth Metal Complexes as Versatile Catalysts for Ring-Opening Polymerization of Cyclic Esters
The Chemical Record ( IF 7.0 ) Pub Date : 2021-07-01 , DOI: 10.1002/tcr.202100148
Jayeeta Bhattacharjee ₁ , Alok Sarkar ₂ , Tarun K Panda ₁

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Biodegradable polyesters such as poly(ϵ-caprolactone) (PCL) and poly(lactic acid) (PLA) have been considered for use in several areas, such as drug delivery devices, sutures, tissue engineering, and GBR membranes, due to its bio-renewability, biodegradability, and biocompatibility. Several synthetic techniques for the preparation of polyesters have been reported in the literature, amongst which the ring-opening polymerization (ROP) of cyclic esters is the most efficient. A convenient approach to access iso-selective PLAs is polymerization of racemic lactide (rac-LA), which shows excellent stereoregularity without the need for costly chiral auxiliaries or ligands. In this personal account, we review a series of methods that have been practiced to the synthesis of biodegradable polyesters from various cyclic monomers using alkali and alkaline earth metal complexes as efficient catalysts.

中文翻译：

碱金属和碱土金属配合物作为环酯开环聚合的多功能催化剂

可生物降解的聚酯，如聚（ε-己内酯）（PCL）和聚（乳酸）（PLA）已被考虑用于多个领域，如药物输送装置、缝合线、组织工程和 GBR 膜，因为它具有生物活性。 - 可再生性、生物降解性和生物相容性。文献中报道了几种制备聚酯的合成技术，其中环酯的开环聚合（ROP）是最有效的。获得等选择性 PLAs 的一种方便方法是聚合外消旋丙交酯 ( rac-LA)，无需昂贵的手性助剂或配体即可显示出优异的立体规整性。在这个个人帐户中，我们回顾了一系列已被实践用于使用碱金属和碱土金属配合物作为有效催化剂从各种环状单体合成可生物降解聚酯的方法。

更新日期：2021-08-16

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