反応 #48393

反応方程式

Sodium hydride

tert-butyl (3R,6R)-2-oxo-6-phenylazepan-3-ylcarbamate

2-bromoethyl methyl ether

→

title compound

収率 86.3%

tert-Butyl (3R,6S)-1-(2-methoxyethyl)-2-oxo-6-phenylazepan-3-ylcarbamate

収率 86.3%

溶媒

N,N-dimethylformamide

反応条件

後処理

1. 1
   workup.ADDITIONAfter addition
2. 2
   その他the reaction was quenched with water
3. 3
   抽出the mixture was extracted with ethyl acetate
4. 4
   洗浄The organic layer was washed with water (3×), saturated brine
5. 5
   乾燥dried over magnesium sulfate
6. 6
   ろ過filtered
7. 7
   濃縮concentrated
8. 8
   その他Purification by silica gel chromatography (5% ethyl acetate/hexanes→30% ethyl acetate/hexanes)

実験手順

Sodium hydride (60% dispersion in mineral oil; 6.2 mg, 0.158 mmol) was added to a solution of tert-butyl (3R,6R)-2-oxo-6-phenylazepan-3-ylcarbamate (40 mg, 0.131 mmol) and 2-bromoethyl methyl ether (0.013 mL, 0.138 mmol) in N,N-dimethylformamide (2 mL) at 0° C. After addition, the mixture was allowed to warm to ambient temperature. After 4 h, the reaction was quenched with water and the mixture was extracted with ethyl acetate. The organic layer was washed with water (3×), saturated brine, dried over magnesium sulfate, filtered and concentrated. Purification by silica gel chromatography (5% ethyl acetate/hexanes→30% ethyl acetate/hexanes) gave the title compound (41 mg). MS 363 (M+1).

出典