反应详情

N,N-Diisopropylethylamine (513 mg, 3.97 mmol) and a solution of trimethylsilyl diazomethane in hexane (2.0 M, 2.0 ml, 3.97 mmol) were added to a solution of N-(2,6-diisopropyl-3-hydroxyphenyl)-2-[4-(3-hydroxypropyl) piperazin-1-yl]acetamide (500 mg, 1.32 mmol) in a mixed solvent of methanol (8 ml) and acetonitrile (12 ml) and the mixture was stirred for four days. After the reaction, the solvent was evaporated. The residue was made basic by adding an aqueous solution of sodium bicarbonate and extracted with chloroform. The organic layer was washed with a saturated sodium chloride solution, dried over anhydrous sodium sulfate and the solvent was evaporated therefrom. The residue was purified by a silica gel column chromatography (developing solvent, chloroform methanol=10:1) to provide 449 mg (yield 87%) of N-(2,6-diisopropyl-3-methoxyphenyl)-2-[4-(3-hydroxypropyl) piperazin-1-yl]acetamide.

1. customAfter the reaction
2. customthe solvent was evaporated
3. additionby adding an aqueous solution of sodium bicarbonate
4. extractionextracted with chloroform
5. washThe organic layer was washed with a saturated sodium chloride solution
6. dry with materialdried over anhydrous sodium sulfate
7. customthe solvent was evaporated
8. customThe residue was purified by a silica gel column chromatography (developing solvent, chloroform methanol=10:1)