Perchloric Acid-Catalyzed Synthesis of 9-Aryl Xanthenes-9<i>H</i>-3,6-diol and 1,3,6,8-Tetraol in Water
作者:Nikhil Vidyasagar、Rabindra Nanda、Rajesh Mangal、Muthu K. Kathiravan
DOI:10.1080/00397911.2011.578326
日期:2012.11
Abstract Efficient syntheses of xanthenes have been described using a catalytic amount of perchloricacid in water. The high temperature and lengthy reaction time normally required for formation of xanthenes derivatives are not necessary when using a catalytic amount of perchloricacid. The method is relatively inexpensive, easily available, nonvolatile, nonexplosive, and thermally robust to catalyze the
Efficient condensation of resorcinol and various aromatic aldehydes in the presence of RuCl3·nH2O as a homogeneous catalyst under reflux conditions was investigated. It was found that a very simple method afforded good to excellent yields of the desired products.
研究了在回流条件下,在作为均相催化剂的RuCl 3 · n H 2 O存在下,间苯二酚与各种芳香醛的有效缩合。发现非常简单的方法提供了所需产物的良好至优异的产率。