反应详情

温度

60 °C

To a suspension of NaH (60%, 340 mg, 8.38 mmol) in THF (10 mL) was added dropwise a solution of tert-butyl 3-{[methoxy(methyl)amino]carbonyl}cyclo-hexylcarbamate (2.00 g, 6.98 mmol) in THF (10 mL) followed by methyl iodide (1.09 g, 7.68 mmol). The mixture was stirred at 60° C. for 0.5 hr. After cooled to room temperature, the mixture was poured into water and extracted with ethyl acetate. The organic phase was washed with brine, dried over Na2SO4, filtered and evaporated. The residue was purified by column chromatography on silica gel (hexane/ethyl acetate=1/1) to give tert-butyl N-[3-(N-methoxy-N-methyl-carbamoyl)cyclohexyl]-N-methylcarbamate as a colorless oil (1.94 g, yield; 93%).

1. temperatureAfter cooled to room temperature
2. extractionextracted with ethyl acetate
3. washThe organic phase was washed with brine
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. customevaporated
7. customThe residue was purified by column chromatography on silica gel (hexane/ethyl acetate=1/1)