Hydrochloric Acid → 1,6-Dimethyl-2-(1-methoxypropyl)-3-hydroxy-pyridin-4(1H)-one hydrochloride

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Reaction Steps

1,6-Dimethyl-2-(1-methoxypropyl)-3-benzyloxy-pyridin-4-(1H)-one (1.65 g, 5.5 mmol) was dissolved in methanol (30 ml)/water (10 ml) and adjusted to pH 1 with concentrated hydrochloric acid prior to hydrogenolysis for 4 hours in the presence of 5% Pd/C catalyst (0.35 g). Filtration followed by rotary evaporation gave the crude product as a white solid. Recrystallization from methanol/diethyl ether gave the pure title compound (1.08 g, 79.3%) as a white crystalline solid. m.p. 225-227° C.

Provenance & Evidence