90-64-2, Name is 2-Hydroxy-2-phenylacetic acid, molecular formula is C8H8O3, Computed Properties of C8H8O3, belongs to phthalazines compound, is a common compound. In a patnet, author is Hashemzadeh, Alireza, once mentioned the new application about 90-64-2.
A magnetically-separable H3PW12O40@Fe3O4/EN-MIL-101 catalyst for the one-pot solventless synthesis of 2H-indazolo[2,1-b] phthalazine-triones
A magnetic inorganic-organic catalyst, PTA@Fe3O4/EN-MIL-101 (EN = ethylenediamine, PTA = phosphotungstic acid) was fabricated and characterized by XRD, HRTEM, FESEM, UV-vis, TGA-DTA, FT-IR, XPS and porosimetry. PTA retained the parent Keggin structure upon dispersion throughout the amine-functionalized chromium terephthalate metal-organic framework, over which magnetic Fe3O4 nanoparticles were previously introduced. The resulting composite heterogeneous solid acid was an active catalyst for the one-pot synthesis of diverse 2H-indazolo[2,1-b] phthalazine-triones in good -> excellent yields under mild, solventless condition, and offers facile separation and excellent recyclability. (C) 2017 Elsevier B.V. All rights reserved.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem