New Convenient Five-Component One-Pot Synthesis of 3-Alkyl-6-amino-1,4-dihydro-4-{[(1,2,3-triazol-4-yl)methoxy]phenyl}pyrano[2,3-c]pyrazole-5-carbonitrile Derivatives

A Novel and Efficient Five-Component Synthesis of Pyrazole Based Pyrido[2,3-d]pyrimidine-diones in Water: A Triply Green Synthesis

A novel one pot synthesis of pyrazolo[4′,3′:5,6]pyrido[2,3-d]pyrimidine-diones, via a five-component reaction, involving, hydrazine hydrate, ethyl acetoacetate, and 1,3-dimethyl barbituric acid, an appropriate aryl aldehydes and ammonium acetate catalyzed via both of heterogeneous and homogeneous catalysis in water, is reported.