A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, SDS of cas: 68947-43-3, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 68947-43-3, Name is 1-Methylpiperidine-4-carboxylic acid, molecular formula is C7H13NO2. In a Article, authors is Appiagyei, Benjamin，once mentioned of 68947-43-3
A green, efficient N-alkylation of amines with simple alcohols has been achieved in aqueous solution via an electrochemical version of the so-called “borrowing hydrogen methodology”. Catalyzed by Ru on activated carbon cloth (Ru/ACC), the reaction works well with methanol, and with primary and secondary alcohols. Alkylation can be accomplished by either of two different electrocatalytic processes: (1) in an undivided cell, alcohol (present in excess) is oxidized at the Ru/ACC anode; the aldehyde or ketone product condenses with the amine; and the resulting imine is reduced at an ACC cathode, combining with protons released by the oxidation. This process consumes stoichiometric quantities of current. (2) In a membrane-divided cell, the current-activated Ru/ACC cathode effects direct C-H activation of the alcohol; the resulting carbonyl species, either free or still surface-adsorbed, condenses with amine to form imine and is reduced as in (1). These alcohol activation processes can alkylate primary and secondary aliphatic amines, as well as ammonia itself at 25-70 C and ambient pressure.
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Reference：
Piperidine – Wikipedia,
Piperidine | C5H6990N – PubChem