HYDROLYSIS OF TRIMETHYLAMINE BORANE IN THE PRESENCE OF LIQUID AND SOLID (POLYMERIC) ACIDS

The mechanism of trimethylamine borane (TMAB) hydrolysis in the presen ce of sulfonate cation exchanger in H+-form, H2SO4 and trimethylamine deuterosulfate has been established. The hydrolytic reaction is first order in TMAB when carried out in the presence of polymeric acid. The rate of TMAB hydrolysis is directly proportional to the cation exchang e capacity of the resin. It was also established that the resin phase acts as a suppressor of TMAB hydrolysis. For the first time, it was no ted that TMAB hydrolysis may be carried out when trimethylamine (TMA) is applied as a hydrolyzing agent. The initial effective rate of hydro lytic reaction in this case is much higher than that observed in sulfu ric acid solution. Most importantly, the complete absence of isotope e xchange between nitrogen-bound deuterium ions of TMA and hydride hydro gens of TMAB in alkaline and neutral media has been observed.