A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, SDS of cas: 1121-89-7, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1121-89-7, Name is Piperidine-2,6-dione, molecular formula is C5H7NO2. In a Article, authors is Jerome, Laure,once mentioned of 1121-89-7
Intramolecular amidocyclopropanation reactions of diethoxymethyl-lactams containing a pendant alkene were examined using zinc/TMSCl. With a range of 4-6-membered lactams, bicyclic amidocyclopropanes were obtained with very high diastereoselectivity with a preference for the formation of the more hindered endo-cyclopropane.
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Reference:
Piperidine – Wikipedia,
Piperidine | C5H1400N – PubChem