反应详情

温度

7.5 °C

To a solution of 4-[4-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-cyclohexyloxy]-benzoic acid ethyl ester (6.3 g, 16.0 mmol) in CHCl3 (50 mL) and ethanol (60 mL) was added hydrazine hydrate (16.0 g, 320.2 mmol). Stirring was continued at ambient temperature for 2 days. The reaction mixture was then cooled to 5-10° C. and the white precipitate was filtered off. The filtrate was washed with water, dried and the solvent evaporated under vacuum to afford 4.15 g (98%) of 4-(4-amino-cyclohexyloxy)-benzoic acid ethyl ester.

1. filtrationthe white precipitate was filtered off
2. washThe filtrate was washed with water
3. customdried
4. customthe solvent evaporated under vacuum