A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Quality Control of 1-(Bromomethyl)-4-chlorobenzene, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 622-95-7, Name is 1-(Bromomethyl)-4-chlorobenzene, molecular formula is C7H6BrCl. In an article, author is Chen, Hui,once mentioned of 622-95-7.
An efficient one-pot synthesis of spiro[indoline-3,1′-pyrazolo[1,2-b]phthalazine] derivatives via three-component reaction of phthalhydrazide, isatin, and malononitrile (cyanoacetic ester) is described. This new protocol has the advantages of high efficiency, mild reaction conditions, one-pot procedure, and convenient operation.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem