4-Amino-3,5-dinitrobenzoic acid → HCID 23172110, compound

Participants

Reaction Steps

To a solution of 4-amino-3,5-dinitrobenzoic acid (10 g, 44 mmol, 1 equiv) in DME (100 ml) and CHCl3 (10 ml) under nitrogen was added 10% palladium on charcoal (50% wet, 1 g, 5% w/w) and the resulting suspension was stirred under an atmosphere of nitrogen (35 psi) for 15 h. 10% Palladium on charcoal (50% wet, 1 g, 5% w/w) was added and the resulting suspension was stirred under an atmosphere of hydrogen (35 psi) for another 15 h. The catalyst was filtered off through a pad of celite and the solution was concentrated in vacuo to give 3,4-diamino-5-nitrobenzoic acid (D244) (9.85 g, 113%) as a red solid which was used in the next step without further purification. [M−H]−=196.1, RT=2.15 min

Provenance & Evidence