Hydrochloric Acid → 3-Acetoxy-5-amino-4-methoxy-benzoic acid

Participants

Reaction Steps

3-Acetoxy-4-methoxy-5-nitro-benzoic acid (4.50 g, 17.6 mmol) (R. T. Borchardt et al., J. Med. Chem. 25 (1982), 312-323; F. Tiemann et al., Ber. dt. Chem. Ges. 9 (1876), 937) was dissolved in ethanol (180 ml) and 0.5 M hydrogen chloride in methanol (4 ml) and hydrogenated in an H-Cube™ hydrogenation reactor with 100 bar hydrogen at 40° C. over a 10% palladium on charcoal cartridge. The mixture was evaporated to dryness to give 4.1 g of the title compound.

Provenance & Evidence