HCID 15731546, compound → HCID 15731550, compound

Participants

Reaction Steps

A suspension of 5-amino-4-nitroso-1-methyl-3-(2-thienyl)-pyrazole (1.255 g, 6.03 mmol) in ethanol (90 ml) was hydrogenated at 20 p.s.i. over 10% palladium on carbon (130 mg) at room temperature for 2 hours. The mixture was filtered through Arbocel filter aid and the filtrate was concentrated under reduced pressure to give the title compound as a red-brown solid (1.133 g, 97%), m.p. 154°-155° C.

Provenance & Evidence