Addition of Dichlorocarbene to cis-1,4-poly(2-Trimethylsilylmethyl-1,3-Butadiene) Fluoride Catalyzed Elimination of Trimethylchlorosilane from cis-1,4-poly(2,3-Dichloromethylene-2-Trimethylsilymethyl-1,3- Butadiene).

摘要

Copolymers made up of 1,4-(2,3-dichloromethylene-2-trimethylsilylmethyl -1,3-butadiene) (I) and 1,5-(3-chloro-2-methylene-pent-3-ene) (II) units have been prepared by potassium fluoride elimination of trimethylchlorosilane from cis-1,4-poly (2,3-dichloromethylene-2-timethylsilymethyl-1,3-butadiene) (III). III was prepared by the addition of dichlorocarbene to 1,4-poly-(2-trimethylsilylmethyl1-1,3-butadiene) (cis/trans =9/1) (IV). Polymer III was characterized by 1H, 13C and 29Si NMR as well as by elemental analysis. The copolymer was characterized by 1H, 13C, and 29Si NMR spectroscopy. The ratio of I and II units in the copolymer were determined by 1H NMR and elemental analysis. Keywords: Dichlorocarbene; Fluoride elimination; 1,4-poly(2-trimethylsilymethyl-1,3 butadiene). Reprints. (AW)