Synthesis and characterization of nitro-p-xylenes.
In this paper we elected to nitrate p-xylene because this compound has only one mononitro- and trinitro- isomer. Trinitro-p-xylene was used as a starting material for the synthesis of other compounds in subsequent work. The mononitration of p-xylene can be easily carried out at 30 degrees C. Nitro-p-xylene is easily nitrated to dinitro-p-xylene at a temperature of 80 degrees C. The trinitro-p-xylene can be obtained at 120 degrees C. Single crystals of 2,3-dinitro-p-xylene and 2,3,5-trinitro-p-xylene were grown using the slow cooling method and we report the X-ray structure of the former. The thermal decomposition of the compounds was studied using differential scanning calorimetry (DSC) and thermogravimetry-derivative thermogravimetry (TG-DTG) techniques and FT-IR. The target compounds were also characterized by (1)H-NMR, (13)C-NMR and MS.
Yan-Hong
Liu
L
State Key Laboratory of Prevention and Control of Explosion, Beijing Institute of Technology, PR China.
Tong-Lai
Zhang
Z
Jian-Guo
Zhang
Z
Jin-Yu
Guo
G
Kai-Bei
Yu
Y
D002152:Calorimetry, Differential Scanning; D018360:Crystallography, X-Ray; D008958:Models, Molecular; D013055:Spectrophotometry, Infrared; D013696:Temperature; D014992:Xylenes / Q000138:chemical synthesis* / Q000737:chemistry*
D014992:Xylenes