Cyclic boron compounds. Part VIII. Amino- and hydrazino-boranes and their cyclic dimers
作者:M. F. Lappert、M. K. Majumdar、B. P. Tilley
DOI:10.1039/j19660001590
日期:——
2-Amino-1,3,2-benzodioxaboroles, (o-C6H4O2 > B·NR′R″)n(R′= H = R″; R′= H and R″= Me, Et, Pri, But, or Ph; and R′= R″= Me or Pri), have been prepared. Formation of dimers or oligomers, in the solid state or in solution but not in the gas phase, depends on R′ and R″. Monomers and oligomers in this and related systems are differentiated by (i) molecular weight, (ii) infrared spectral characteristics,
2-氨基-1,3,2-苯并二恶唑硼烷,(o -C 6 H 4 O 2 > B·NR'R '' )n(R'= H = R''; R'= H且R''= Me,Et ,镨我,卜吨,或pH;和R'= R“= Me或镨我),已经制备。固态或在溶液中但不在气相中的二聚体或低聚物的形成取决于R'和R''。该体系和相关体系中的单体和低聚物的区别在于(i)分子量,(ii)红外光谱特性和(iii)相对水解反应性。两个相关的2-氨基-1,3,2-苯并二氮杂硼环[[ o -C 6 H 4(NH)2 > B·NR'R“]已获得n个。对于这些以及对于2-肼基-1,3,2-苯并二恶唑硼酸酯而言,关于分子聚集的明确决定是不可能的。首先建立2Me 2 NBCl 2 →(Me 2 NBCl 2) 2系统的标准(ii)和(iii),并进一步利用(iii)来确定正己烷中稀溶液的二聚反应动力学。在25°时,由二阶速率表达式控制。