Studies of aminoboranes. Part II. Pyrolysis of monoalkylamine-boranes: some aminoborane trimers (1,3,5-trialkylcyclotriborazanes) and dimers
作者:M. P. Brown、R. W. Heseltine、L. H. Sutcliffe
DOI:10.1039/j19680000612
日期:——
Trimericaminoboranes (RNH·BH2)3, where R = Me, Et, Pr, Bu, and But, each of which occurs in two forms, have been prepared by pyrolyses of the corresponding amine-boranes RNH2,BH3. The dimeric aminoborane (ButNH·BH2)2 was also obtained from pyrolysis of ButNH2,BH3 and a similar dimer (PriNH·BH2)2 was the only aminoborane which could be isolated from the pyrolysis of PriNH2,BH3. Proton magnetic resonance
Derivatives of tetrazaborol-2-ine (cyclotetrazenoborane) V. Preparation and properties of B-alkyl, B-aryl and B-vinyl derivatives
作者:J.B. Leach、J.H. Morris
DOI:10.1016/s0022-328x(00)82759-x
日期:1968.8
Two routes for the preparation of B-substituted tetrazaborol-2-ines have been developed. The action of Grignard reagents on derivatives of the type R2N4BH produces compounds R2N4BR″ in high yield, through the intermediate formation of magnesium-containing complexes. Thermal degradation of a diorganoboron azide in the presence of an organic azide also produces boron-substituted tetrazaborol-2-ines.
已经开发了两种制备B-取代的四氮杂硼烷-2-胺的途径。格氏试剂对R 2 N 4 BH类型衍生物的作用是通过中间形成含镁配合物而以高收率产生化合物R 2 N 4 BR”。在有机叠氮化物的存在下,二有机硼叠氮化物的热降解也会产生硼取代的四氮杂硼烷-2-胺。已经研究了化合物的UV,IR和NMR光谱。
The diborane–methyl cyanide reaction. Further studies on volatile products
作者:J. R. Jennings、K. Wade
DOI:10.1039/j19680001946
日期:——
Diborane and methyl cyanide at 80–90° give as volatile products NN′N″-triethylborazine Et3N3B3H3(35–40% yield), µ-diethylaminodiborane Et2NB2H5(ca. 1% yield), and materials of higher molecular weight (15–20% yield) which may include compounds of formulae Et5N5B4H2, Et4N5B5H4, and Et5N6B6H5. Aspects of the i.r. and 1H and 11B n.m.r. and mass spectra of the products are discussed, and possible structures
乙硼烷和甲基氰化物在80-90℃得到为挥发性产物NN ' ñ “-triethylborazine的Et 3 Ñ 3乙3 ħ 3(收率35-40%),μ -diethylaminodiborane的Et 2 NB 2 ħ 5(约1%的产率)和分子量较高(15-20%的收率)的材料,其中可能包括式Et 5 N 5 B 4 H 2,Et 4 N 5 B 5 H 4和Et 5 N 6 B 6的化合物^ h 5。讨论了ir和1 H和11 B nmr的方面以及产物的质谱,并指出了较高分子量材料的可能结构。还给出了由EtNH 2和B 2 H 6制备的µ-乙基氨基二硼烷EtNHB 2 H 5的光谱学细节。
11B NMR studies of the thermal decomposition of ammoniaborane in solution
作者:J.S. Wang、R.A. Geanangel
DOI:10.1016/s0020-1693(00)87499-x
日期:1988.8
Heating solutions of NH3BH3 in aprotic solvents above approximately 80 °C resulted in three types of chemical reactions. In etheral solvents NH3BH3 underwent stepwise hydrogen-loss decomposition leading to cyclotriborazane and borazine along with other minor products. In pyridine solution base displacement led to pyridineborane. In acetonitrile both products of hydrogen-loss decomposition and either
NH 3 BH 3在非质子溶剂中的加热溶液高于约80°C,导致三种化学反应。在醚类溶剂中,NH 3 BH 3进行逐步的氢损失分解,从而生成环三硼氮烷和硼嗪以及其他次要产物。在吡啶溶液中,碱置换得到吡啶硼烷。在乙腈中,鉴定了氢损失分解以及氢化或硼氢化的两种产物。11 B NMR谱峰面积显示,在130°C的二甘醇二甲醚中于0.15 M NH 3 BH 3中形成的环三硼氮烷的最大收率。
Dehydropolymerization of Amine−Boranes using Bis(imino)pyridine Rhodium Pre‐Catalysis: σ‐Amine−Borane Complexes, Nanoparticles, and Low Residual‐Metal BN−Polymers that can be Chemically Repurposed
作者:Mathew J. Cross、Claire N. Brodie、Dana G. Crivoi、Joe C. Goodall、David E. Ryan、Antonio J. Martínez‐Martínez、Alice Johnson、Andrew S. Weller
DOI:10.1002/chem.202302110
日期:2023.10.26
The dehydropolymerization of H3B ⋅ NMeH2 using bis(imino)pyridine rhodium pre-catalysis reveals the σ-amine−borane complexes, nanoparticle formation, and polyaminoboranes with low residual metal content that can be chemically repurposed to N,N,N-trimethylcyclotriborazane.
使用双(亚氨基)吡啶铑预催化进行 H 3 B ⋅ NMeH 2的脱氢聚合揭示了 σ-胺−硼烷配合物、纳米颗粒的形成以及残留金属含量低的聚氨基硼烷,可通过化学方法将其重新利用为N,N,N -三甲基环三硼烷。