Trichloro-trimethyl-borazine

The monomer tri-isocyanto-trimethyl-borazine (TITMB) was synthesized from trichloro-trimethyl-borazine (TCTMB) according to the method reported in the literature [12]. The Intermediate TCTMB was synthesized via a modification of the procedure of Brown and Laubengayer [13]. Methyl-amine hydrochloride and excess of BCI3 were refluxed in chlorobenzene for 6h and then maintained for 16h at 80°C. The reaction mixture was filtered warm, vacuum dried and subsequently sublimed under reduced pressure. A slight increase in yield (12%) of pure TCTMB was achieved. 

Hexaphenyldisilane allowed to react with 1 5 Na,K-alloy in anhydrous ether under Ng, excess alloy removed by amalgamation, the resulting green ethereal triphenylsilyl-K added to an ethereal suspension of B-trichloro-N-trimethyl-borazine, and the product isolated when the green color has disappeared B-tris(triphenylsilyl)-N-trimethylborazine. Y 78%.—This is the first prepn. of compounds containing boron-silicon bonds. F. e. s. A. H. Gowley, H. H. Sisler, and G. E. Ryschkewitsch, Am. Soc. 82, 501 (1960). 

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