反应详情

温度

60 °C

To a solution of ethyl 4-[[5-(1,4-dioxa-8-azaspiro[4.5]decan-8-yl)-2-methyl-benzoyl]amino]-3,5-dimethyl-benzoate (205 mg, 452.99 μmoles) in acetone (5 ml) is added a mixture of 5M HCl (1 mL) in H2O (1 mL) and heated to 60° C. After 12 hours, the mixture is cooled to ambient temperature, diluted with 2M NaOH to pH 6 and extracted with ethyl acetate. The combined organic layers are dried over sodium sulfate, filtered, and concentrated under reduced pressure. The resulting residue is purified by flash chromatography (silica gel) using 0-40% ethyl acetate in hexane to afford the title compound as an off-white foam (0.11 g, 61%). Mass spectrum (m/z): 409.2 (M+1).

1. temperaturethe mixture is cooled to ambient temperature
2. extractionextracted with ethyl acetate
3. dry with materialThe combined organic layers are dried over sodium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customThe resulting residue is purified by flash chromatography (silica gel)