619-67-0, Name is 4-Hydrazinylbenzoic acid, molecular formula is C7H8N2O2, Product Details of 619-67-0, belongs to phthalazines compound, is a common compound. In a patnet, author is Shaterian, Hamid Reza, once mentioned the new application about 619-67-0.
Mild preparation of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives with magnetic Fe3O4 nanoparticles coated by (3-aminopropyl)-triethoxysilane as catalyst under ambient and solvent-free conditions
An efficient, one-pot quantitative procedure for preparation of 1H-pyrazolo[1,2-b]phthalazine-5,10-dione derivatives from four-component condensation reaction of hydrazine monohydrate, phthalic anhydride, malononitrile or ethyl cyanoacetate, and aromatic aldehydes in the presence of magnetic Fe3O4 nanoparticles coated by (3-aminopropyl)-triethoxysilane as catalyst under mild, ambient, and solvent-free conditions is described. Simple procedure, high yield, short reaction time, and environmentally benign method are advantages of this protocol. The magnetic Fe3O4 nanoparticles coated by (3-aminopropyl)-triethoxysilane can be recovered and reused several times without loss of activity.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem