反应详情

Compound 103 (2.7 g, 4.3 mmol) was dissolved in 30 ml methylene chloride and 30 ml diethylamine was added. The reaction mixture was stirred at room temperature for 2 h, and then concentrated to an oil under reduced pressure. The residue was dissolved with diethyl ether and ethyl acetate (ca. 50 ml ea.) and extracted with 10% citric acid. The aqueous layer was neutralized to pH13 with 10N NaOH and extracted with ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate and concentrated under reduced pressure to give 1.6 g of a brown oil, 4.0 mmol, 92% (compound 104).

1. concentrationconcentrated to an oil under reduced pressure
2. dissolutionThe residue was dissolved with diethyl ether and ethyl acetate (ca. 50 ml ea.)
3. extractionextracted with 10% citric acid
4. extractionextracted with ethyl acetate
5. washThe organic layer was washed with brine
6. dry with materialdried over magnesium sulfate
7. concentrationconcentrated under reduced pressure