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Catalysts 2017, 7(5), 165; doi:10.3390/catal7050165

Use of Metal Catalysts Bearing Schiff Base Macrocycles for the Ring Opening Polymerization (ROP) of Cyclic Esters

1
College of Chemistry and Materials Science, Northwest University, Xi’an 710069, China
2
School of Mathematics & Physical Sciences, University of Hull, Hull HU6 7RX, UK
Academic Editor: Keith Hohn
Received: 5 May 2017 / Revised: 15 May 2017 / Accepted: 18 May 2017 / Published: 22 May 2017
View Full-Text   |   Download PDF [2008 KB, uploaded 22 May 2017]   |  

Abstract

Schiff base macrocycles are emerging as useful scaffolds for binding two or more catalytic metals in close proximity. Such coordination chemistry allows for the evaluation of potentially beneficial catalytic cooperative effects. In the field of ring opening polymerization (ROP) of cyclic esters, only a handful of metal systems bound by Schiff base [2 + 2] type macrocycles have been studied. Nevertheless, results to date have, for certain metals, identified some interesting structure activity relationships, whilst for other systems results have revealed particular combinations of metals and macrocycles to be virtually inactive. This perspective review takes a look at two types of recently-reported Schiff base macrocycles that have been employed as pro-ligands in the metal-catalyzed ROP of cyclic esters, specifically ε-caprolactone and rac-lactide. View Full-Text
Keywords: Schiff base macrocycle; metal catalysts; ring opening polymerization; cyclic esters Schiff base macrocycle; metal catalysts; ring opening polymerization; cyclic esters
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Redshaw, C. Use of Metal Catalysts Bearing Schiff Base Macrocycles for the Ring Opening Polymerization (ROP) of Cyclic Esters. Catalysts 2017, 7, 165.

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