A simple and environmentally friendly strategy for the synthesis of E-ortho-hydroxystilbenes has been established. Two kinds of α,β-unsaturated aromatic lactones, i.e. the 3-arylcoumarins and the isoaurones, could both readily undergo a cascade hydrolyzation/decarboxylation reaction in the presence of KOH in ethylene glycol to afford the desired E-ortho-hydroxystilbenes in moderate to high yields.
已经建立了一种简单且对环境友好的策略,用于合成E-邻-羟基
对苯二酚。两种α,β不饱和芳族内
酯,的即3-arylcoumarins和isoaurones,既可以容易地进行在KOH的存在下
水解级联/
脱羧反应在
乙二醇,得到期望的E-邻-hydroxystilbenes在中度至高产。