Methanol → HCID 67422663, compound

Participants

Reaction Steps

A mixture of 860 mg (0.42 mmol, 1 eq) of 4-(2,4-bis(benzyloxy)-5-fluorophenyl)piperidine-1-carboxylic acid tert-butyl ester at 35% in 10 ml of ethyl acetate, in the presence of 200 mg of palladium-on-charcoal at 10%, is stirred at ambient temperature under a hydrogen pressure of 5 bar for 17 hours. 5 ml of methanol are added and the reaction medium is stirred at ambient temperature under a hydrogen pressure of 5 bar for 29 hours. The reaction medium is filtered through filter paper and the filtrate is evaporated off. The residue is chromatographed on silica gel, elution being carried out with 60/40 heptane/ethyl acetate. 192 mg of 4-(5-fluoro-2,4-dihydroxyphenyl)-3,6-dihydro-2H-pyridine-1-carboxylic acid tert-butyl ester are obtained.

Provenance & Evidence