Benzoic acid, 3-formyl-4-hydroxy-, methyl ester → 2-Hydroxy-5-methoxycarbonyl-benzaldehyde oxime

Participants

Reaction Conditions

Reaction Steps

A solution of 68.0 g (0.83 mol) of sodium acetate and 68.0 g (0.98 mol) of hydroxylamine hydrochloride in 300 ml of water is added dropwise to a solution of 80.5 g (0.45 mol) of 2-hydroxy-5-methoxycarbonylbenzaldehyde in 300 ml of methanol and the mixture is stirred at 25° C. for 2 hours. The product which has precipitated is filtered off with suction, washed with water and dried in vacuo over phosphorus pentoxide to give 70.4 g of the title compound.

Provenance & Evidence