Ethyl 4-(2-hydroxyethyl)picolinate → Ethyl 4-(2-hydroxyethyl)piperidine-2-carboxylate

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Reaction Steps

A mixture of 8.37 g of ethyl 4-(2-hydroxyethyl)-pyridine-2-carboxylate in 130 ml acetic acid and 4 g platinum oxide is hydrogenated at 50 lbs/in2. Filtration, concentration in vacuo, neutralization with potassium carbonate and extraction with methylene chloride yields an oil that is purified by flash chromatography using methylene chloride/methanol saturated with ammonia (20:1) to yield ethyl 4-(2-hydroxyethyl)-piperidine-2-carboxylate.

Provenance & Evidence