反应详情

温度

-20 °C

To a stirred slurry of 4.6 g. (0.03 mole) of 5-acetylfuran-2-carboxylic acid in 150 ml. of dichloromethane was added 3.3 g. (0.033 mole) of N-methylmorpholine. The resulting solution was cooled to -20° C., and 3.6 g. (0.033 mole) of ethyl chloroformate was added dropwise, with stirring. Stirring was continued for 1 hour at -15° C. and then 3.8 g. (0.033 mole) of n-hexylmethylamine was added dropwise at -20° C. The resulting mixture was stirred for 1.5 hours while being allowed to warm to room temperature. The reaction mixture was then washed with water, dried (Na2SO4) and evaporated in vacuo to give 7.5 g. of an oil. This oil was chromatographed on silica gel, eluting with 1:1 hexane-ethyl acetate, to give 5.6 g. of the title amide as an oil.

1. stirringStirring
2. stirringThe resulting mixture was stirred for 1.5 hours
3. temperatureto warm to room temperature
4. washThe reaction mixture was then washed with water
5. dry with materialdried (Na2SO4)
6. customevaporated in vacuo
7. customto give 7.5 g
8. customThis oil was chromatographed on silica gel
9. washeluting with 1:1 hexane-ethyl acetate
10. customto give 5.6 g