反应详情

A solution of 6-fluoro-8-nitro-quinolin-3-ol (1.285 g, 6.21 mmol) and cesium carbonate (4.046 g, 12.42 mmol) in dimethylsulfoxide (5 ml) was treated with bromomethyl-cyclopropane (1.09 g, 8.1 mmol). After stirring at room temperature overnight water (250 ml) was added and the mixture was extracted with ethyl acetate (2×20 ml) and dichloromethane (2×20 ml). The organic layers were collected, dried and evaporated. The crude product was purified by chromatography on silica gel using a 9:1-mixture of cyclohexane/ethyl acetate as the eluent. 3-Cyclopropylmethoxy-6-fluoro-8-nitro-quinoline was obtained as a yellow solid (600 mg, 45%); (calculated) C13H11FN2O3 [262.2]; (found) [M+H]+=263.

1. additionwas added
2. extractionthe mixture was extracted with ethyl acetate (2×20 ml) and dichloromethane (2×20 ml)
3. customThe organic layers were collected
4. customdried
5. customevaporated
6. customThe crude product was purified by chromatography on silica gel using a 9