An efficient method to synthesize TNAD by the nitration of 1,4,5,8-tetraazabicyclo-[4,4,0]-decane wi

• 作 者: Xiao-Feng Cao Bin-Dong Li Min Wang
• 机 构: Chemical Engineering College,Nanjing University of Science and Technology,
• 出 处: Chinese Chemical Letters
• 发表日期: 2014年03期
• 关键词: ionic liquids synthesize Ionic molar acidic catalyzed starting anhydride spectro

An experimental study was carried out on the direct nitration of 1,4,5,8-tetraaza-bicyclo-[4,4,0]-decane to synthesize 1,4,5,8-tetranitro-1,4,5,8-tetraazabicyclo-[4,4,0]-decane(TNAD) with N2O5 catalyzed by acidic ionic liquids. Various ionic liquids, such as [HMim]X, [(CH2)4SO3HMim]X and [Capl]X(X = pTSO, NO3, HSO4), and various parameters such as equivalents of ionic liquid, molar ratio of N2O5 to the starting material, reaction time and temperature, and solvent were investigated. Ionic liquid [(CH2)4SO3HMim]HSO4 showed better catalytic activity. In the presence of 3% molar ratio of [(CH2)4SO3HMim]HSO4 ionic liquid to the staring material, the yield of 1,4,5,8-tetranitro-1,4,5,8-tetraazabicyclo-[4,4,0]-decane was improved by 6.2% compared to the system without ionic liquid.

An experimental study was carried out on the direct nitration of 1,4,5,8-tetraaza-bicyclo- [4,4,0] -decane to synthesize 1,4,5,8-tetranitro-1,4,5, Various ionic liquids such as [HMim] X, [(CH2) 4SO3HMim] X and [Capl] X (X = pTSO, NO3, HSO4), and various parameters such as equivalents of ionic liquid, molar ratio of N2O5 to the starting material, reaction time and temperature, and solvent were investigated. Ionic liquid [(CH2) 4SO3HMim] HSO4 showed better catalytic activity. In the presence of 3% molar ratio of [(CH2) 4SO3HMim] HSO4 ionic liquid to the staring material, the yield of 1,4,5,8-tetranitro-1,4,5,8-tetraazabicyclo- [4,4 , 0] -decane was improved by 6.2% compared to the system without ionic liquid.