AbstractPolycondensation reactions of phenols with phthalic anhydride were carried out in the presence of ferric hydrogensulphate under melt conditions. The reactions proceeded in short reaction times by using a catalytic amount of Fe(HSO4)3 and the corresponding fluorescein derivatives were obtained in high yields. The simplicity, scale-up, along with the use of an inexpensive, non-toxic, recyclable catalyst of an environmentally benign nature, are other remarkable features of the procedure. The absorption and emission properties of these fluorescein derivatives were studied.
摘要:在熔融条件下,在硫酸亚铁的存在下,苯酚与邻苯二甲酸酐发生了聚缩反应。通过使用少量Fe(HSO4)3催化剂,反应在短时间内进行,并且获得了高产率的相应荧光素衍生物。该程序的其他显著特点包括简单易行、可扩展性强,以及使用成本低廉、无毒、可回收的环保催化剂。这些荧光素衍生物的吸收和发射特性也得到了研究。