反应详情

0.500 ml (4.01 mmol) of ethyl isocyanatoacetate was dissolved in dichloromethane. 0.05 ml of 4 N hydrochloric acid/1,4-dioxane solution was added to the obtained solution, and they were stirred at room temperature for 5 minutes. 0.547 ml (4.41 mmol) of 3-methyl-3-pentanol was added to the reaction mixture, and they were stirred overnight. After the concentration under reduced pressure, ethyl acetate was added to the reaction mixture, and they were washed with saturated aqueous sodium hydrogencarbonate solution, dried over anhydrous magnesium sulfate and then concentrated under reduced pressure. The residue was washed with diethyl ether. The filtrate was concentrated under reduced pressure to obtain the title compound.

1. stirringwere stirred overnight
2. concentrationAfter the concentration under reduced pressure, ethyl acetate
3. additionwas added to the reaction mixture, and they
4. washwere washed with saturated aqueous sodium hydrogencarbonate solution
5. dry with materialdried over anhydrous magnesium sulfate
6. concentrationconcentrated under reduced pressure
7. washThe residue was washed with diethyl ether
8. concentrationThe filtrate was concentrated under reduced pressure