142072-43-3Relevant academic research and scientific papers
Studies on 1-Trimethylsilyl-2,4,6-triethylborazine and Related Species
Niedenzu, Kurt,Serwatowska, Joanne,Serwatowski, Janusz
, p. 713 - 717 (2007/10/02)
Key Words: Boron-Nitrogen Compounds, Borazines, Unsymmetrically Substituted Borazines, Polyborazines The unsymmetrically substituted borazine (C6H5)3B3N3H2 has been obtained from the reaction of C6H5BCl2 with HN2, and an improved synthesis of (C2H5)3B3N3H2 has been developed.The reaction of the latter with an excess of BCl3 proceeds with the ultimate formation of Cl3B3N3H2, whereas the reaction with one molar equivalent of BBr3 leads to the formation of Br(C2H5)2B3N3H2a diborazinyl and additional products.C6H5BBr2 reacts with N3 to give the aminoborane 2NBBr(C6H5), but C6H5BCl2 does not undergo a reaction under analogous conditions.
Preparation of unsymmetrically B-substituted borazines and characterization of tris(4,6-diethylborazin-2-yl)amine
Bai,Niedenzu,Serwatowska,Serwatowski
, p. 4631 - 4635 (2008/10/08)
Symmetrically substituted B,B′,B″-triorganylborazines, (RBNR′)3, react with an equimolar quantity of boron trihalide, BX3 (X = Cl, Br), to form B-monohaloborazines, XR2B2N3R3, as well as RBX2, and with 2 molar equiv of BX3 to form the B,B′-dihaloborazines, X2RB3N3R′3. The compounds are obtained in good yield and purity, and are easily converted to other unsymmetrically B-substituted borazines. The borazines X(CH3)2B3N3(CH3) 3 (X = SCH3, NH2, C4H9, N[Si(CH3)2]), X(C2H5)2B3N3H3 (X = Br, SCH3), Cl(C2H5)2B3N3(CH 3)3, X2(C2H5)2B3N 3H3 (X = Br, SCH3), Cl(C6H5)2B3N3H 3, and Cl2(C2H5)B3N3(CH 3)3 have been prepared and characterized. The compound (H2N)(C2H5)2B3N 3H3 could not be obtained in the pure state; instead, it slowly condenses (even at room temperature) with the formation of the bis(borazin-2-yl)amine HN[(C2H5)2B3N3H 3]2 and the tris(borazin-2-yl)amine N[(C2H5)2B3N3H 3]3. The borazine (H2N)(CH3)2B3N3(CH 3)3 condenses at temperatures from 250 to 270°C to give HN [(CH3)2B3N3(CH3) 3]2. Reaction of this bis(borazin-2-yl)amine with LiC4H9 yields (C4H9)(CH3)2B3N 3(CH3)3 and (NHLi)(CH3)2B3N3(CH 3)3; the latter then reacts with Cl(CH3)2B3N3(CH3) 3 to regenerate HN[(CH3)2B3N3(CH3) 3]2. The unsymmetricaliy N-substituted borazine (C2H5)3B3N3H 2[Si(CH3)3] has been isolated and characterized.
