反应详情

N-[3-(2—Carboxyethyl)-4,6-dimethylindolin-7-yl]-2,2-dimethyl-propanamide (1.5 g) was dissolved in AcOEt (10 ml) and a solution of CH2N2 in ether was added. AcOEt (100 ml) was added, and after washing with water, the mixture was dried over anhydrous sodium sulfate. AcOEt was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: CHCl3/MeoH=50/1−10/1) to give 1.0 g of N-[3-(2-methoxycarbonylethyl)-4,6-dimethylindolin-7-yl]-2,2-dimethylpropanamide.

1. washafter washing with water
2. dry with materialthe mixture was dried over anhydrous sodium sulfate
3. customAcOEt was evaporated under reduced pressure
4. customThe residue was purified by silica gel column chromatography (eluent: CHCl3/MeoH=50/1−10/1)