Sodium → HCID 20260938, compound

Participants

Reaction Steps

Sodium (0.50 g.) was dissolved in ethanol (10 ml.) and a solution of 2-acetyl-4-(3-pyridylmethyl)phenoxyacetic acid ethyl ester (4.70 g.) in ethanol (15 ml.) was added. The mixture was heated under reflux for 3 hours and then evaporated. The residue was dissolved in water and the solution was washed several times with ether. The aqueous layer was acidified with glacial acetic acid to give a gummy solid which was filtered off, washed with water, dried and chromatographed on silica gel. Elution with chloroform gave some impurity and then further elution with chloroform/methanl (9:1) gave a solid which was crystallized from ethanol to give 3-methyl-5-(3-pyridylmethyl)benzofuran-2-carboxylic acid (0.75 g.) m.p. 223-225° C.

Provenance & Evidence