Hydrochloric Acid → HCID 14871959, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of methyl 5-(3-methyl-1,2,4-oxadiazol-5-yl)-2-thiophenecarboxylate, prepared according to Example 81, (1.09 g, 4.86 mmole) in 35 ml of 2N sodium hydroxide was diluted with 5 ml of ethanol and warmed to 65° C. for thirty minutes. The solution was cooled in an ice bath and acidified to pH 2 with concentrated hydrochloric acid. Filtration and drying furnished 870 mg (85% yield) of the title compound as an off-white solid. The analytical sample was recrystallized from methanol, m.p. 226°-8° C.

Provenance & Evidence