Journal of Polymer Science Part A Polymer Chemistry · 2012 · 105 citations · 36 references
EngineeringAbstract PolymerizationChemistryPolymersChemical EngineeringMacromolecular EngineeringOrganometallic CatalysisTransfer ReactionsPolymer ChemistryMaterials ScienceInorganic ChemistrySynthetic MacromoleculeStereoselective Coordination PolymerizationLanthanide‐based CatalystCatalysisHigh SelectivityPolymer ScienceCoordination PolymerPolymerization KineticsPolymer ReactionPolymer Synthesis
Abstract Polymerization of β‐myrcene with neodymium borohydride‐based coordination catalysts is very efficient, affording poly‐β‐myrcene (polymyrcene, PMy) with high selectivity. With stoichiometric amounts of n ‐butylethyl magnesium (BEM) as co‐catalyst, good control over macromolecular data along with cis ‐stereoselectivity up to 98.5%, are obtained. In the presence of excess BEM, high level of transfer reactions efficiency between neodymium and magnesium is clearly evidenced whereas the selectivity switches to 3,4‐rich. Combining the neodymium pre‐catalyst with triisobutyl aluminum in the presence of a boron activator affords PMy in good yield, but the polymer material displays low solubility, likely due to the occurrence of crosslinking. © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012
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