Hydrochloric Acid → 3-Amino-4,5-diethoxycarbonyl-2-phenyl-6-sulfopyridine

Participants

Reaction Conditions

Reaction Steps

A mixture of 0.34 g of 3,4-diethoxycarbonyl-3-nitro-2-phenyl-6-sulfopyridine, 0.41 g of reduced iron and 7 ml of ethanol was heated to 60° C., and then 0.5 ml of conc. hydrochloric acid was added. The mixture was heated under reflux for 20 minutes. After the reaction mixture was concentrated to dryness, the residue was subjected to silica gel column chromatography (eluent:chloroform/methanol 5:1), to give 0.24 g of the title compound as pale yellow crystals.

Provenance & Evidence