Simplified synthesis of B-trichloro N-trialkylborazines (ClBNR)3, R = Me, Et, and of heterocycles related to 1,3-diaza-2,4-diboranaphthalene (ClBNC6H5)2
作者:Jean Atchekzaï、Florence Guilhon、Henri Mongeot、Bernard Frange
DOI:10.1016/s0020-1693(00)85349-9
日期:1992.12
related trimeric species (ClBNH)3, the latter compound being obtained in small amounts when the adduct ODMA·BCl3 (ODMA = N,N-dimethyloctylamine) is used instead of BDMA·BCl3 When applied to C6H5NH2·HCl, the same reaction leads to the expected borazine (ClBNC6H5)3 with moderate yield (23%), the main compound (77% according to 1H NMR) being a boron-nitrogen heterocycle derived from 1,3-diaza-2,4- diboranaphthalene
摘要在回流的氯苯中加热叔胺三氯化硼加合物BDMA·BCl3(BDMA = N,N-二甲基苄基胺)和胺盐酸盐RNH2·HCl(R = Me,Et)的1/1混合物,得到B-三氯N-三烷基硼嗪(ClBNR)3(R = Me,Et),收率非常好。使用NH4Cl,相同的反应无法得到相关的三聚体(ClBNH)3,当使用加合物ODMA·BCl3(ODMA = N,N-二甲基辛胺)代替BDMA·BCl3时,少量获得后者生成C6H5NH2·HCl,相同的反应可制得预期的环硼嗪(ClBNC6H5)3,产率适中(23%),主要化合物(根据1H NMR为77%)是衍生自1,3-二氮杂- 2,4-二硼萘(C6H5NBCl)2。尝试通过色谱方法分离后一种化合物是不成功的。