A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, SDS of cas: 15991-59-0, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 15991-59-0, Name is 2-Propylpiperidine hydrochloride, molecular formula is C8H18ClN. In a Article, authors is Adriaenssens, Louis V.，once mentioned of 15991-59-0
Alkylidenetitanium reagents enable the reagent-controlled high throughput asymmetric synthesis of 2-substituted piperidines and rapid access to multiple cyclic imines using solid phase synthesis (SPS). The Schrock carbenes, generated by reduction of thioacetals, convert resin-bound esters into enol ethers. Treatment with acid releases amino ketones that are cyclized with TMSCl to give iminium salts. Reduction introduces a chiral centre at C-2, whose absolute stereochemistry is determined by a phenethylamine (PEA) chiral auxiliary. Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
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Reference：
Piperidine – Wikipedia,
Piperidine | C5H9414N – PubChem