3,4-dihydro-3-[1-(phenylmethyl)-4-piperidinyl]-2(1H)-pyrido[2,3-d]-pyrimidinone → 3-Piperidin-4-yl-3,4-dihydropyrido[2,3-d]pyrimidin-2(1H)-one

Participants

Reaction Steps

A solution of 4.7 g (0.0146 mol) of 3,4-dihydro-3-[1-(phenylmethyl)-4-piperidinyl]-2(1H)-pyrido[2,3-d]-pyrimidinone in 50 ml of methanol was hydrogenated at a temperature of 50° C. and in the presence of 2.0 g of 20% palladium/charcoal until the uptake of hydrogen ceased. After removal of the catalyst and solvent 3.3 g (97.3% of theory) of a colourless oil of Rf=0.35 (FM1) were obtained.

Provenance & Evidence