Formic Acid → 3-(4-Methyl-1H-imidazol-1-yl)benzenamine

Beteiligte Stoffe

Reaktionsschritte

A mixture of 14.6 g of 4-methyl-1-(3-nitrophenyl)-1H-imidazole, 766 mg of palladium black, 19.6 g of sodium formate, 12.8 ml of formic acid in 300 ml of methyl alcohol is stirred for 18 hours under a hydrogen atmosphere. The mixture is filtered through diatomaceous earth and the filtrate evaporated to a residue. The residue is partitioned between saturated potassium bicarbonate and chloroform. The organic layer is dried and evaporated to a residue which is dissolved in a minimum of chloroform and passed through a pad of hydrous magnesium silicate. The filtrate is evaporated to a residue which is stirred with ether and the resulting solid filtered and air dried to give 10.3 g of the desired product as a solid, m.p. 117°-119° C.

Herkunft & Nachweise