HCID 20309579, compound → HCID 20309512, compound

Participants

Reaction Steps

A solution of 3-(2-hydroxy-5-nitrobenzoyl)propionic acid (5.5 g, 0.023 mole) in ammonium hydroxide solution (5N; 100 ml) was added to a stirred, boiling solution of ferrous sulphate heptahydrate (45 g, 0.161 mole) in water (200 ml). Stirring under reflux was continued for a futher 1 hour, ammonium hydroxide solution was added to pH 9, the mixture was filtered through Kieselguhr and evaporated to dryness. The solid residue was crystallised from ethanol to give pale yellow needles of 3-(5-amino-2-hydroxybenzoyl)propionic acid (2.2 g, 46%, m.p. 158°-160°).

Provenance & Evidence