A Zn based metal organic framework with pyridine 2, 5-dicarboxylate (Zn-based MOF) were prepared as a reusable
heterogeneous catalyst using solvothermal method. Zn-based MOF was used as heterogeneous catalyst for synthesis 5-arylidene
malononitrile in ethanol under reflux condition. The attractive features of present method are mild reaction condition, short
reaction time, simplicity, easy separation of catalyst and excellent yield.