HCID 12298154, compound → 4-Piperidinecarboxylic acid, 4-[(3-methoxyphenyl)amino]-, methyl ester

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Reaction Steps

A mixture of 60 parts of methyl 4-[N-(3-methoxyphenyl)amino]-1-(phenylmethyl)-4-piperidinecarboxylate and 400 parts of ethanol is hydrogenated at normal pressure and at room temperature with 10 parts of palladium-on-charcoal catalyst 10%. After the calculated amount of hydrogen is taken up, the catalyst is filtered off and the filtrate is evaporated. The residue is purified by column-chromatography over silica gel using a mixture of trichloromethane and 10% of methanol, previously saturated with gaseous ammonia, as eluent. The pure fractions are collected and the eluent is evaporated, yielding methyl 4-[N-(3-methoxyphenyl)amino]-4-piperidinecarboxylate as an oily residue.

Provenance & Evidence