Formic Acid → 4-(2-methyl-1H-imidazol-1-yl)aniline

Beteiligte Stoffe

Reaktionsschritte

A mixture of 54.0 g of 2-methyl-1-(p-nitrophenyl)imidazole, 2.87 g of palladium black, 36.7 g of sodium formate and 47.4 ml of formic acid in 1100 ml of methyl alcohol is stirred at room temperature for 18 hours under a hydrogen atmosphere. The mixture is filtered and the filtrate evaporated to a residue. The residue is partitioned between saturated potassium bicarbonate and chloroform. The organic layer is dried and passed through a pad of hydrous magnesium silicate. The filtrate is evaporated to a residue which is crystallized from ether:ethanol to give 34.9 g of the desired product as a solid, m.p. 108°-110° C.

Herkunft & Nachweise