反应型阻燃剂四溴对苯二甲醇的合成

SYNTHESIS OF REACTIVE FLAME RETARDANT TETRABROMO-p-XYLYLENE DIOL

以对二甲苯为原料 ,经过路易斯酸无水三氯化铝催化的苯环的溴代 ,侧链光溴代 ,酯化和水解 ,合成了四溴对苯二甲醇。通过质谱 (MS)和元素分析确认了其结构。

Tetrabromopxylene diol was prepared from pxylene through bromination of benzene ring, ultraviolet bromination of sidechains, esterification and hydrolysis. Its structure was identified by MS and elemental analysis. The influence of temperature on yield and colour of product in bromination of benzene ring as well as the influence of bromine feeding speed on yield of brominated sidechains were investigated.