Projects per year
Abstract
Herein, we report an iron(II)-catalyzed polymerization of arylallenes. This reaction proceeds rapidly at room temperature in the presence of a hydride co-catalyst to generate polymers of weight up to Mn=189 000 Da. We have determined the polymer structure and chain length for a range of monomers through a combination of NMR, differential scanning calorimetry (DSC) and gel permeation chromatography (GPC) analysis. Mechanistically, we postulate that the co-catalyst does not react to form an iron(II) hydride in situ, but instead the chain growth is proceeding via a reactive Fe(III) species. We have also performed kinetic and isotopic experiments to further our understanding. The formation of a highly unusual 1,3-substituted cyclobutane side-product is also investigated.
Original language | English |
---|---|
Pages (from-to) | 12335-12340 |
Number of pages | 6 |
Journal | Chemistry - A European Journal |
Volume | 27 |
Issue number | 48 |
Early online date | 16 Jul 2021 |
DOIs | |
Publication status | Published - 25 Aug 2021 |
Keywords
- allenes
- cycloaddition
- homogeneous catalysis
- iron
- polymers
ASJC Scopus subject areas
- Catalysis
- Organic Chemistry
Fingerprint
Dive into the research topics of 'Polymerization of Allenes by Using an Iron(II) β-Diketiminate Pre-Catalyst to Generate High M n Polymers'. Together they form a unique fingerprint.Projects
- 1 Active
-
EC Fellowship - Cast Iron Catalysis: New Protocols for the Synthesis of Carbon-Phosphorus Bonds
Engineering and Physical Sciences Research Council
3/12/17 → 2/03/24
Project: Research council