Stößer Tim, Williams Charlotte K
Department of Chemistry, Oxford University, Chemical Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK.
Angew Chem Int Ed Engl. 2018 May 22;57(21):6337-6341. doi: 10.1002/anie.201801400. Epub 2018 Apr 27.
ABA triblock polyesters are synthesized using a commercially available chromium salen catalyst, in one pot, from monomer mixtures comprising epoxide, anhydride and lactone. The catalysis is highly selective and applies a single catalyst in two distinct pathways. It occurs first by epoxide/anhydride ring-opening copolymerization and subsequently by lactone ring-opening polymerization. It is used to produce various new ABA polyester polyols; these polyols can undergo post-functionalization and chain-extension reactions. The ability to use a commercial catalyst and switchable catalysis with monomer mixtures is expected to facilitate future explorations of new classes of block polymers.
使用市售的铬双水杨醛催化剂，通过一锅法，从包含环氧化物、酸酐和内酯的单体混合物中合成ABA三嵌段聚酯。该催化具有高度选择性，并且在两条不同的途径中使用单一催化剂。首先通过环氧化物/酸酐开环共聚反应发生，随后通过内酯开环聚合反应进行。它用于生产各种新型ABA聚酯多元醇；这些多元醇可以进行后功能化和扩链反应。使用商业催化剂以及与单体混合物进行可切换催化的能力有望促进未来对新型嵌段聚合物的探索。
