PHASE-TRANSFER PD(0) CATALYZED POLYMERIZATION REACTIONS .3. POLYMERIZATION BY CROSS-COUPLING OF ALKYL-BORON COMPOUNDS AND AROMATIC HALIDES CATALYZED BY PDCL2(DPPF) AND BASES

This paper describes a novel polymerization reaction which consists of a sequence of hydroboration of a diolefin with 9‐borabicyclo[3.3.1]nonane (9‐BBN) followed by the intermolecular cross‐coupling of the resulting 1,1′‐bis(B‐alkanediyl‐9‐borabicyclo[3.3.1]nonanes with dihaloarenes. The reaction is performed in the presence of dichloro[1,1′‐bis(diphenylphosphino)ferrocene] palladium (II) [PdCl2 (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. Copyright © 1990 John Wiley & Sons, Inc.