反应详情

温度

100 °C

A solution of 2.01 g (10 mmol) of 1,1-dimethylethyl 4-hydroxy-1-piperidinecarboxylate in 20 ml of dimethylformamide is admixed with 7 g (40 mmol) of 1-bromo-4-fluorobenzene and 2.5 g (50 mmol) of sodium hydride at 50% in mineral oil. The mixture is stirred at 100° C. for 3 hours and then evaporated to dryness. The residue is taken up in 50 ml of ice-water and extracted with dichloromethane. The organic extracts are evaporated to dryness, to give 3.5 g of an oily product, which is used as it is in the following step.

1. customevaporated to dryness
2. extractionextracted with dichloromethane
3. customThe organic extracts are evaporated to dryness