中文摘要：

将芳香醛、麦氏酸与NaHCO3置于研钵中，在无溶剂存在下通过研磨可以发生缩合反应，反应产率良好．

英文摘要：

Knoevenagel condensations of aromatic aldehydes with Meldrum＇s acids in the absence of solvent have been found to proceed with high yields under grinding conditions.