反应详情

温度

150 °C

A solution of 4-bromo-9a-butyl-8-chloro-7-methoxy-1,2,9,9a-tetrahydro-3H-fluoren-3-one (103 mg, 0.268 mmol) in anhydrous 1-methyl-2-pyrrolidinone (0.54 mL) was treated with copper(I) cyanide (24 mg, 0.268 mmol). The mixture was placed under a nitrogen atmosphere, stirred, and heated in an oil bath at 150° C. for 1.5 hours. After cooling to room temperature, the mixture was partitioned between EtOAc (50 mL) and water (50 mL). The organic phase was washed with water (5×50 mL) and brine (50 mL), dried over MgSO4, filtered, and evaporated under vacuum to an oil. The crude product was purified by preparative layer chromatography on a 0.1×20×20 cm silica gel GF plate, developing with 5% EtOAc in CH2Cl2. The product band was eluted with EtOAc and the eluent evaporated under vacuum to afford 9a-butyl-8-chloro-4-cyano-7-methoxy-1,2,9,9a-tetrahydro-3H-fluoren-3-one (65 mg) as an oil.

1. temperatureAfter cooling to room temperature
2. customthe mixture was partitioned between EtOAc (50 mL) and water (50 mL)
3. washThe organic phase was washed with water (5×50 mL) and brine (50 mL)
4. dry with materialdried over MgSO4
5. filtrationfiltered
6. customevaporated under vacuum to an oil
7. customThe crude product was purified by preparative layer chromatography on a 0.1×20×20 cm silica gel GF plate
8. washThe product band was eluted with EtOAc
9. customthe eluent evaporated under vacuum