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. 502496-34-6, Name is 4-Bromo-2-fluoro-6-nitrotoluene, molecular formula is C7H5BrFNO2. In an article, author is Shaterian, Hamid Reza,once mentioned of 502496-34-6, HPLC of Formula: C7H5BrFNO2.
One-pot, four-component synthesis of 2H-indazolo[2,1-b]phthalazine-triones catalyzed by cellulose-SO3H as a reusable heterogeneous and efficient catalyst
A practical and green method for the synthesis of 2H-indazolo[2,1-b]phthalazine-1,6,11(13H)-trione derivatives using cellulose-SO3H as a solid acidic catalyst for the four-component condensation reaction of hydrazinium hydroxide, phthalic anhydride, dimedone, and aromatic aldehydes under thermal solvent-free conditions is described. Cellulose-SO3H as a recyclable green chemical compound has been demonstrated as a new catalyst for the synthesis of this class of compounds.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem