Tin ion-exchanged montmorillonite demonstrated the high catalytic activity for the direct nucleophilic substitution of a hydroxyl group in α-aryl alcohols with various 1,3-dicarbonyl compounds including less acidic 1,3-diesters in crude solvents to afford the benzylated products accompanied by water.
锡离子交换
蒙脱石表现出对α-芳基醇中的羟基与各种1,3-双羰基化合物(包括酸性较弱的1,3-双酯)在粗溶剂中进行直接亲核取代反应的高催化活性,生成伴有
水的苄基化产物。