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. 827026-45-9, Name is 3-(4-Nitro-1-oxoisoindolin-2-yl)piperidine-2,6-dione, molecular formula is C13H11N3O5. In an article, author is Vereshchagin, A. N.,once mentioned of 827026-45-9, Product Details of 827026-45-9.
Stereoselective multicomponent synthesis of (2RS,6SR)-2,6-diaryl-3,3,5,5-tetracyanopiperidines
Multicomponent reaction between alkylidenemalononitriles, formaldehyde, and ammonium acetate upon reflux in alcohols gives stereoselectively 2,6-diaryl-3,3,5,5-tetracyanopiperidines in 6592% yields. In this process, ammonium acetate acts as both a catalyst and a source of nitrogen for the piperidine ring.
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Reference:
Piperidine – Wikipedia,
,Piperidine | C5H11N – PubChem