机构地区: 湖北师范学院化学与环境工程学院化学系
出 处: 《精细石油化工》 1992年第1期29-30,共2页
摘 要: 选用多聚磷酸作催化剂,考察了用邻苯二甲酸酐与间苯二酚合成荧光黄的最佳反应条件。实验结果表明:在多聚磷酸催化下,于150~160℃反应2h,平均产率可达95.8%。本法具有反应温度低、时间短、操作简单、产率高等特点。 The suitable synthetic conditions of fluorescein from phthalic anhydride and resocinol under polyphorsphoric acid(PPA) catalyst were groped. The experimental results showed that: at 150~160℃, reaction time 2 hours, the yield can achieve 95.80%. The merits of this method are lower reaction temperature, shorter reaction time, convenient operations and higher yield.
领 域: [化学工程]