Preparation and Application of Nano-AlPO4/ Ti (IV) as a New and Recyclable Catalyst for the Four-Component Synthesis of Dihydropyrano[2,3-c]Pyrazoles

چکیده مقاله

In this work, nano-AlPO4/Ti(IV) (NAPT) as a new nanocomposite was pre-pared and then characterized by FT-IR, XRD, FESEM, TEM, BET and TGA. This nano-catalyst was used for synthesis of dihydropyrano[2,3-c]pyrazole (DHPP) derivatives by one-pot four component reaction of aldehyde, ethyl acetoacetate, malononitrile and hydrazine hydrate. An uncomplicated work-up, high yields of product, short reaction times and use of low-cost catalyst are considerable properties of present procedure.