Step-growth titanium-catalysed dehydropolymerisation of amine-boranes.

ABSTRACT: Precatalysts active for the dehydropolymerisation of primary amine-boranes are generally based on mid or late transition metal. We have found that the activity of the precatalyst system formed from Cp^R₂TiCl₂ and 2nBuLi towards the dehydrogenation of the secondary amine-borane Me₂NH·BH₃, to yield the cyclic diborazane [Me₂N-BH₂]₂, increases dramatically with increasing electron-donating character of the cyclopentadienyl rings (Cp^R). Application of the most active precatalyst system (Cp^R = η-C₅Me₅) to the primary amine-borane MeNH₂·BH₃ enabled the first synthesis of high molar mass poly(N-methylaminoborane), [MeNH-BH₂

SUBMITTER: Jurca T 

PROVIDER: S-EPMC5933219 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature