synthesis of 2-amino-3,5-dicarbonitrile-6-thiopyridines using silica-bonded n-propyldiethylenetriamine as a heterogeneous solid base catalyst
چکیده(به انگلیسی؛ چکیدهی فارسی در دسترس نیست)
silica-bonded n-propyldiethylenetriamine (7) is employed as a recyclable heterogeneous solid base catalyst for the synthesis of 2-amino-3,5-dicarbonitrile-6-thiopyridines through pseudo four-component condensation reaction between aromatic aldehydes, malononitrile, and 2-amino-thiophenol in refluxing ethanol. silica-bonded n-propyldiethylenetriamine showed much the same efficiency when used in consecutive reaction runs.