HCID 16770985, compound → HCID 21506103, compound

Participants

Reaction Steps

4-Methoxy-3-nitro-5-sulphamyl-benzoic acid (2.8 g) was dissolved in 1N sodium hydrogen carbonate solution (12 ml), and hydrogenated, using Pd-on-carbon as a catalyst, and the 3-amino-4-methoxy-5-sulphamyl-benzoic acid was isolated as described in Example 1 B. After several recrystallizations from water and drying at 78°C in vacuo, the melting point was 210°C under decomposition.

Provenance & Evidence