Reaction of BH3·NEt3 with tris(trimethylsilyl)silylpotassium yielded the respective silylboranate. Abstraction of a hydride with B(C6F5)3 led to the neutral silylborane, which could be derivatised as an Et3N adduct. Treatment of the boranate with Cp2Ti(btmsa) resulted in exchange of THF coordinating to potassium by Cp2Ti(btmsa).
