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Pechmann香豆素合成_反应_von_ZnCl - 搜狐
Brønstedt酸或Lewis 酸催化下酚和β-酮酯缩合得到香豆素类似物的反应,被称为 Pechmann香豆素合成反应。此反应也被称为 von Pechmann环化反应或 Pechmann缩合反应。1883年, H. von Pechmann和C. Duisberg报道了乙酰乙酸乙酯和间苯二酚在浓硫酸 ...
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