HCID 14574473, compound → HCID 178497326, compound

Participants

Reaction Steps

A mixture of dimethyl 4-acetamido-3-nitrophthalate (142.1 g, 0.480 mol) in methanol with 5% platinum on carbon catalyst is hydrogenated on a Parr hydrogenator at room temperature. The reaction mixtures is filtered through diatomaceous earth and concentrated in vacuo to afford a solid residue. This solid is dispersed in glacial acetic acid and toluene, and heated with stirring at reflux temperatures for 4 hours with azeotropic removal of water. The resultant hot reaction mixture is slowly added to a saturated sodium bicarbonate solution with vigorous stirring, filtered and the filter cake dried to give the title product as a white solid (71.6 g, 60.1%), mp 97°-103° C.

Provenance & Evidence