The title reaction is studied with a series of CN- or COOCH3-substituted dipolarophiles. All the reactions obey the second-order rate law. The activation enthalpies and entropies are 44–52 kJ mol−1 and −(129–166) J K−1 mol−1, respectively. The rate constants are insensitive to solvent. The reactivity and product of dimethyl maleate are anomalous.
我们用一系列 CN- 或 COOCH3 取代的二极亲和剂对标题反应进行了研究。所有反应都符合二阶速率定律。活化焓和熵分别为 44-52 kJ mol-1 和 -(129-166) J K-1 mol-1。速率常数对溶剂不敏感。
马来酸二甲酯的反应活性和生成物都很反常。