Transfer Pd(0) Catalyzed Polymerization Reactions. III. Polymerization by Cross-Coupling of Alkyl-Boron Compounds and Aromatic Halides Catalyzed by PdCl2 (dppf) and Bases

摘要

This paper describes a novel polymerization reaction which consists of a sequenceof hydroboration of a diolefin with 9-borabicyclo3.3.1 nonanes (9-BBN) followed by the intermolecular cross-coupling of the resulting bis (B-alkanediyl-9-borabicyclo3.3.1 nonanes with dihaloarenes. The reaction is performed in the presence of dichloro1,1'-BIS (Diphenylphosphino) ferrocene palladium (II) PdC1(2)(dppf), a base, and a phase transfer catalyst. Both steps are performed in the same reaction flask. Alternatively, this polymerization reaction can be applied to bifunctional monomers containing an olefin and a haloarene group, for example, p-bromostyrene.