Stereoselective Copolymerization of Butadiene and Functionalized 1,3-Dienes
journal contribution
posted on 2016-06-09, 12:23 authored by Hannes Leicht, Inigo Göttker-Schnetmann, Stefan Mecking[(Mesitylene)nickel(allyl)<sup>+</sup>][BAr<sup>F</sup><sub>4</sub><sup>–</sup>] (<b>Ni-1</b>) catalyzes the 1,4-<i>cis</i> selective copolymerization
of isoprene and 1,3-butadiene
with 15 (RO)<sub>3</sub>Si-, R<sub>2</sub>N-, RSO<sub>2</sub>-, RSO<sub>2</sub>NH-, and (RO)<sub>2</sub>B-functionalized 1,3-dienes. Incorporation
of the functionalized 1,3-diene occurs very efficiently with high
comonomer conversions, as observed, for example, for copolymerizations
of 1,3-butadiene with (EtO)<sub>3</sub>Si(CH<sub>2</sub>)<sub>3</sub>C(CH<sub>2</sub>)CHCH<sub>2</sub> (<b>1</b>), PhS(O)<sub>2</sub>(CH<sub>2</sub>)<sub>3</sub>C(CH<sub>2</sub>)–CHCH<sub>2</sub> (<b>7</b>), or (pinB)C(CH<sub>2</sub>)C(CH<sub>3</sub>)CH<sub>2</sub> (<b>15</b>),
while copolymerization rates vary from strongly to slightly decreased
when compared to butadiene homopolymerizations.
History
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