Pyridine → HCID 22349970, compound

Participants

Reaction Steps

To a solution of 1-(3,5-dinitro-phenyl)-1H-pyrrole (8.2 g, 35.19 mmol) and pyridine (10 ml) in ethanol (100 ml), at 80° C., was added a 20% aqueous solution of ammonium sulfide (38.4 ml, 140.76 mmol, 4.0 eq.) in water (10 ml). The mixture was stirred at the same temperature for 4 h. The mixture was quenched with ice water (200 ml) and the precipitated solid was filtered. The filtered solid was dried under vacuum to afford the product in 98% yield (7.0 g).

Provenance & Evidence