Let¡¯s face it, organic chemistry can seem difficult to learn, Quality Control of 1H-Pyrazole-4-carbaldehyde, Especially from a beginner¡¯s point of view. Like 35344-95-7, Name is 1H-Pyrazole-4-carbaldehyde, molecular formula is pyrazoles-derivatives, belongs to pyrazoles-derivatives compound. In a document, author is Karami, Shahriar, introducing its new discovery.
DABA MNPs: a new and efficient magnetic bifunctional nanocatalyst for the green synthesis of biologically active pyrano[2,3-c]pyrazole and benzylpyrazolyl coumarin derivatives
In this work, a new core-shell magnetic silica nanocatalyst functionalized with 3,4-diaminobenzoic acid (Fe3O4@SiO2@PTS-DABA) was successfully prepared and characterized using different spectroscopic methods or techniques including FT-IR, FE-SEM, VSM, XRD, EDS and TGA. The Fe3O4@SiO2@PTS-DABA catalyst was applied, as a magnetically recoverable catalyst, for the synthesis of biologically active dihydropyranopyrazole and benzylpyrazolyl coumarin derivatives. These derivatives were prepared in the presence of Fe3O4@SiO2@PTS-DABAviaa four-component reaction with yields of more than 90% under mild conditions. The Fe3O4@SiO2@PTS-DABA nanocatalyst is easily prepared from commercially available, lower toxicity and thermally stable precursors through a cost-effective, highly efficient and environmentally friendly procedure. It has a long life and can be reused for several catalytic cycles without significant loss of the catalytic activity. Finally, a possible mechanism is proposed for the preparation of dihydropyranopyrazole and benzylpyrazolyl coumarin derivatives in the presence of the Fe3O4@SiO2@PTS-DABA multifunctional magnetic catalyst. The structure of the products was identified by melting point measurement as well as FT-IR and(1)H NMR spectroscopic methods.
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Reference:
Pyrazole – Wikipedia,
,Pyrazoles – an overview | ScienceDirect Topics