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Abstract
A new strategy for the ring–opening metathesis polymerization (ROMP) of cycloalkenes 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 (Mn ≤ 9.4 kg/mol) with relatively low dispersities (Đ ≤ 1.4). The optimized conditions showed efficiency comparable to that achieved with Grubbs’ catalyst. A positive correlation between monomer to initiator ratio and degree of polymerization was revealed through NMR spectroscopy.
Supplementary materials
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Supporting Information
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Experimental details, characterization data, spectra and traces, and computational details.
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