Evidence of coordinative chain transfer polymerization of isoprene using iron iminopyridine/ZnEt2 catalytic systems. Issue 32 (3rd August 2021)

• Record Type: Journal Article
• Authors: Hashmi, Obaid H.; Visseaux, Marc; Champouret, Yohan
• Is Part Of: Polymer chemistry. Volume 12:Issue 32(2021)
• Page Start: 4626
• Page End: 4631
• Publication Date: 2021-08-03
• Subjects: Polymers -- Periodicals; Macromolecules -- Periodicals; Polymerization -- Periodicals; 547.705
• DOI: 10.1039/d1py00433f
• Languages: English
• ISSNs: 1759-9954

Abstract

Abstract : Herein, the first example of a reversible iron-mediated chain transfer polymerisation of isoprene with ZnEt2 as the chain transfer agent is reported. Abstract : Isoprene polymerization using iminopyridine-supported iron complexes combined with Al i Bu3 /[B(C6 F5 )4 ][CPh3 ] was carried out in the presence of ZnEt2 as the chain transfer agent (CTA). Detailed studies revealed that the M n of the resulting polyisoprenes and the rate of polymerization decrease steadily as the amount of CTA increases while preserving the catalyst selectivity. These results highlight the first example of a reversible iron-mediated chain transfer polymerization of isoprene.