Formic Acid → 2-Methyl-4-nitrophenylformamide

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

25 g (0.26 mol) of acetic anhydride were cooled to 0° C. under nitrogen. 15 g (0.32 mol) of formic acid were added dropwise at this temperature. The resultant mixture was then allowed to melt, and was then warmed to from 50 to 60° C. over the course of two hours. The mixture was then cooled to room temperature, and 20 ml of dry tetrahydrofuran were added, and the resultant mixture was again cooled to 0° C. A suspension of 15.2 g (0.1 mol) of 2-methyl-4-nitroaniline in 100 ml of THF was then added dropwise to this mixture, and the resultant mixture was left at 0° C. for one hour and then warmed to room temperature. The resultant yellow precipitate was filtered off with suction, washed with water and dried at 50° C. under reduced pressure, to give 13.9 g of N-formyl-2-methyl-4-nitroaniline (yield: 77%). The product had the same physical/chemical properties as that prepared in the above-described manner (compare section 1.1).

Herkunft & Nachweise