HCID 68731586, compound → HCID 68732363, compound

Participants

Reaction Steps

A mixture of 4-(tert-butoxycarbonylamino-methyl)-2-nitro-benzoic acid (56.57, 190.9 mmol) in methanol (250 mL) and palladium/carbon (5.66 g, 10% weight) was hydrogenated with a Parr-shaker overnight at 51 psi. The black mixture was filtered through a pad of Celite, and the filtrate was evaporated to give a brown oil, which was stirred in ether (300 mL) overnight. The ether slurry was filtered to give 2-amino-4-(tert-butoxycarbonylamino-methyl)-benzoic acid as a brown solid (42.0 g, 84% yield). The product was used in the next step without further purification.

Provenance & Evidence