A practical synthesis of novel α-dibromoalkyl- and trimethylsilylmethyl-aminoboranes and derivatives
作者:H. Can Söyleyici、Erkan Fırıncı、Fatih Eyduran、Funda Akbulat、Yüksel Şahin
DOI:10.1016/j.saa.2010.12.066
日期:2011.3
dimethoxy(dibromomethyl)borane 2. N,N-Dimethylamino(methoxy)(dibromomethyl)borane 3 and N,N-bis(dimethylamino)(dibromomethyl)borane 4 were prepared by an amination reaction between N,N-dimethylaminotrimethylsilane and dimethoxy(dibromomethyl)borane 2. To obtain dichlorotrimethylsilylmethylborane 7 not containing the α-halomethyl group, N,N-bis(dimethylamino)(trimethylsilylmethyl)borane 5 was first obtained
在-78℃的温度下,将LDA添加到硼酸三甲酯和二溴甲烷在THF中的混合物中,导致二溴甲基锂的形成并被硼酸酯捕获。ClB(OMe)(2)将所得的硼酸盐转化为二甲氧基(二溴甲基)硼烷2。通过以下方法制备N,N-二甲基氨基(甲氧基)(二溴甲基)硼烷3和N,N-双(二甲基氨基)(二溴甲基)硼烷4 N,N-二甲基氨基三甲基硅烷与二甲氧基(二溴甲基)硼烷2之间的胺化反应。为了获得不含α-卤代甲基的二氯三甲基甲硅烷基甲基硼烷7,首先从ClB的反应中获得N,N-双(二甲基氨基)(三甲基甲硅烷基甲基)硼烷5。 (NMe(2))(2)与有机锂试剂。然后通过化合物5的甲氧基化反应制备二甲氧基(三甲基甲硅烷基甲基)硼烷6。化合物7是使用BCl(3)氯化6制备的。使用(13)C,(1)H,(11)B NMR和GC / MS / MS技术确定这些化合物的化学结构。