知识与财富的链接
为了更好地指导五氧化二氮(N2O5)硝解1,3,5,7-四乙酰基-1,3,5,7-四氮杂环辛烷(TAT)制备奥克托今(HMX)的生产,研究了TAT在N2O5/HNO3体系中的硝解反应机理.采用柱层析从硝解产物中分离得到了两个副产物,并采用1H NMR、IR以及元素分析进行了结构表征,确证其为1,5-二乙酰基-3,7-二硝基-1,3,5,7,-四氮杂辛烷( DADN)和1-乙酰基-3,5,7-三硝基-1,3,5,7-四氮杂环辛烷(SEX).rAT先迅速硝解形成一硝基化合物,再快速硝化形成DADN,DADN中酰胺碱性降低,反应慢慢硝化形成SEX,SEX再以更慢的速度硝化形成HMX,其中k2＞k1,k2＞k3＞k4.
In order to provide better guidance to the preparation of HMX by nitrolysis of 1,3,5,7-tetraacetyl-1,3,5,7-tetrazacyclooctane(TAT),the nitrolysis mechanism was investigated.Two byproducts 1,5-diacetyl-3,7-dinitro-1,3,5,7-tetrazacyclooctane(DADN) and 1-acetyl-3,5,7-trinitro-1,3,5,7-tetrazacyclooctane(SEX) were obtained by flash column chromatography and were indentified by 1H NMR,FTIR and elementary analysis.The results reveal that TAT is nitrated in succession to form HMX,and the order of the reaction rate is k2>k1,k2>k3>k4.
