A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, Name: sec-Butyl 2-(2-hydroxyethyl)piperidine-1-carboxylate, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 119515-38-7, Name is sec-Butyl 2-(2-hydroxyethyl)piperidine-1-carboxylate, molecular formula is C12H23NO3. In an article, author is Barat, Viktor,once mentioned of 119515-38-7.
Synthesis of (-)-Cytisine Using a 6-endo aza-Michael Addition
An asymmetric synthesis of (-)-cytisine has been achieved. The piperidine C-ring was formed using a stereodivergent intramolecular 6-endo aza-Michael addition. The B-ring was established by intramolecular pyridine N-alkylation. The absolute stereochemistry was established by an Evans acyl oxazolidinone enolate alkylation reaction that proceeded with an unexpected stereochemical outcome due to participation of the pyridine nitrogen lone pair.
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Reference:
Piperidine – Wikipedia,
,Piperidine | C5H11N – PubChem