In:
Angewandte Chemie, Wiley, Vol. 134, No. 24 ( 2022-06-13)
Abstract:
The ring‐opening metathesis polymerization (ROMP) of cyclopropenes using hydrazonium initiators is described. The initiators, which are formed by the condensation of 2,3‐diazabicyclo[2.2.2]octane and an aldehyde, polymerize cyclopropene monomers by a sequence of [3+2] cycloaddition and cycloreversion reactions. This process generates short chain polyolefins ( M n ≤9.4 kg mol −1 ) with relatively low dispersities ( Đ ≤1.4). The optimized conditions showed efficiency comparable to that achieved with Grubbs’ 2 nd generation catalyst for the polymerization of 3‐methyl‐3‐phenylcyclopropene. A positive correlation between monomer to initiator ratio and degree of polymerization was revealed through NMR spectroscopy.
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v134.24
DOI:
10.1002/ange.202203344
Language:
English
Publisher:
Wiley
Publication Date:
2022
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