HCID 12877070, compound → HCID 20434239, compound

Participants

Reaction Steps

A mixture of 38.3 parts of 1-(4-nitrophenyl)-5-propyl-1H-1,2,4-triazole monohydrochloride and 400 parts of methanol is hydrogenated at normal pressure and at room temperature with 3 parts of palladium-on-charcoal catalyst 10%. After the calculated amount of hydrogen is taken up, the catalyst is filtered off and the filtrate is evaporated. The residue is dissolved in water and neutralized with sodium hydrogen carbonate. The product is extracted with dichloromethane. The extract is washed with water, dried, filtered and evaporated. The residue is converted into the hydrochloride salt in 2-propanol. The salt is filtered off and dried, yielding 35 parts (91%) of 4-(5-propyl-1H-1,2,4-triazol-1-yl)benzenamine dihydrochloride.

Provenance & Evidence