regioselective synthesis of highly functionalized pyranopyrazoles was achieved in excellent yield from phenyl pyrazolone, substituted aromatic aldehyde with nitroketene-n,s-acetal in the presence of indium trichloride as a versatile catalyst under reflux condition in ethanol-water mixture. all reactions preceeded within a short period of time with excellent purity. all of the synthesized compou...

The CuSnO3:SiO2 catalyst was synthesized by hydrothermal method. polycrystalline products were analyzed using various physical investigative techniques including XRD, SEM, TEM and BET surface area. present study deals with one-pot, four component reaction of aldehydes, malononitrile hydrazine hydrate ethyl acetoacetate in the presence catalytic amount Silica grafted CuSnO3 ethanol at 70°C to pr...

An extremely efficient catalytic protocol for the synthesis of a series of pyranopyrazole derivatives developed in a one-pot four-component approach in the presence of ZnO nanoparticles as heterogeneous catalyst using water as a green solvent is reported. Greenness of the process is well instituted as water is exploited both as reaction media and medium for synthesis of catalyst. The ZnO nanopa...

A series of novel nano-structured manganese pyranopyrazole Schiff base complex (3a-l) has been synthesized and described. This synthetic complexation involved sequential reactions domino four-component one-pot reaction for the template (1), imination (2) finally completed by with to furnish title compounds (3a-l). The salient this nano-Schiff protocol is that diverse chemical functionalities we...