The anionic polymerization of 5-(N,N-dialkylamino)isoprenes with sec-butyllithium was investigated in different solvents under various conditions. The homopolymerization can be described as a 2nd order reaction with respect to the monomer concentration, indicating that two monomer units are involved in the rate determining reaction. A mechanistic proposal to explain this unusual behaviour is based on the structure of amino-functional lithium organic compounds.
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Mannebach et al. (1998) studied this question.
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