A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 402-50-6, Name is 1-(Trifluoromethyl)-4-vinylbenzene, molecular formula is C9H7F3. In an article, author is Wang Yinglei,once mentioned of 402-50-6, Quality Control of 1-(Trifluoromethyl)-4-vinylbenzene.
Synthesis of Pyrazolo[1,2-b]phthalazine-5,10-diones Catalyzed by Poly(ethylene glycol) Grafted 4-Dimethylaminopyridine Functionalized Ionic Liquid
A novel poly(ethylene glycol) grafted 4-dimethylaminopyridine functionalized ionic liquid ([DMAP-PEG(1000)-DIL][BF4]) was prepared and characterized by H-1 NMR, C-13 NMR, FT-IR and ESI-MS. In the presence of [DMAP-PEG(1000)-DIL][BE4], various substituted aromatic aldehyde could react with malononitrile (or ethyl cyanoacetate) and phthalhydrazide in water to obtain a series of pyrazolo[1,2-b]phthalazine-5,10-dione derivatives with 85%similar to 96% yields. The mild reaction conditions, high stable and recyclable ionic liquids, environmental friendliness are advantages of this methodology.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem