A Facile Synthesis of Xanthene-1,8(2<i>H</i>)-dione Derivatives by Using Tetrapropylammonium Bromide as Catalyst
作者:Ahmad Poursattar Marjani、Sima Abdollahi、Mahnaz Ezzati、Ebrahim Nemati-Kande
DOI:10.1002/jhet.3164
日期:2018.6
Several new derivatives of 9‐aroyl‐3,4,5,6,7,9‐hexahydro‐1H‐xanthene‐1,8(2H)‐dione have been synthesized in yields varying from high to excellent by the condensation reaction of arylglyoxals with 1,3‐diketones (cyclohexane‐1,3‐dione or dimedone) and TPAB as an inexpensive, recoverable, and non‐toxic catalyst in the presence of ethanol/water under reflux conditions.
的几个新的衍生物9芳酰基3,4,5,6,7,9 -六氢-1- ħ呫吨-1,8-(2 ħ) -二酮已在产量通过缩合反应从高改变到极好的被合成在乙醇/水存在下,在回流条件下,将具有1,3-二酮(环己烷-1,3-二酮或二甲基酮)的芳基乙二醛和TPAB作为廉价,可回收且无毒的催化剂。