反应详情

110.2 g (0.633 mol) of 7-methoxy-β-naphthol were nitrosated in a mixture of 650 ml of glacial acetic acid and 65 ml of water at 0° C. in the course of two hours using a solution of 45.0 g (0.65 mol) of sodium nitrite in 340 ml of water. Stirring was continued for a further two hours and in this time the temperature of the reaction mixture was allowed to rise to 22° C. Then the volume was made up to 1.6 l with water and the precipitated product was filtered off by suction. After drying, 120.3 g (93.5%) of 1-nitroso-7-methoxy-β-naphthol were obtained.

1. customto rise to 22° C
2. filtrationthe precipitated product was filtered off by suction
3. customAfter drying