5-fluoro-3-methylbenzene-1,2-diamine

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 20 g (0.118 mol) of 2,3-diamino-5-fluorotoluene and 15.8 g (0.176 mol) of oxalic acid are stirred at reflux for 16 hours in 4N hydrochloric acid. The reaction mixture is cooled, diluted with water, filtered off on a suction filter and washed with water. The title compound is obtained as beige crystals of m.p.>300° C. The reaction mixture is cooled filtered off on a suction filter washed with water

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 25 g (0.147 mol) of 4-fluoro-2-methyl-6-nitroaniline in 250 ml of tetrahydrofuran are hydrogenated at about 34° C. for 2 hours in the presence of 8 g of Raney nickel. The reaction mixture is then filtered off and concentrated. The title compound is obtained as a brown oil. The reaction mixture is then filtered off concentrated