Hydrochloric Acid → HCID 13388341, compound

Participants

Reaction Steps

To a solution of diethyl 2-methyl-4-(2-trifluoromethylphenyl)-6-formyl-1,4-dihydropyridine-3,5-dicarboxylate (1.0 g) in ethanol (20 ml) was gradually added sodium borohydride (92 mg) under stirring and ice-cooling and the resultant mixture was further stirred for 25 minutes. The resultant mixture was adjusted with 0.1 N hydrochloric acid to pH 4 to 5. The ethanol was removed under reduced pressure without heating so much, and water was added to the residue to give crystals. The crystals were collected by filtration to give crude crystals (1.2 g). These were recrystallized from a mixture of diethyl ether and n-hexane to give pure crystals of diethyl 2-methyl-4-(2-trifluoromethylphenyl)-6-hydroxymethyl-1,4-dihydropyridine-3,5-dicarboxylate, m.p. 147° to 148.5° C.

Provenance & Evidence