反応 #59831

反応方程式

ammonium chloride

triethylamine

t-butyldimethylsilyl chloride

compound

Methyl (2R)-2,3-dihydroxypropionate

→

title compound

収率 59.1%

Methyl (2R)-3-{[tert-butyl(dimethyl)silyl]oxy}-2-hydroxypropionate

収率 59.1%

溶媒

methylene chloride

反応条件

後処理

1. 1
   抽出The mixture was extracted with ethyl acetate
2. 2
   洗浄the organic layer was washed with water and saturated saline
3. 3
   乾燥dried over anhydrous magnesium sulfate
4. 4
   その他The solvent was evaporated under reduced pressure
5. 5
   その他the resulting residue was purified by silica gel column chromatography

実験手順

The compound of Example 68-1 (308 mg, 2.57 mmol) was dissolved in methylene chloride (10 ml), and thereto were added triethylamine (704 mg, 6.95 mmol), 4-dimethylaminopyridine (33 mg, 0.27 mmol), and t-butyldimethylsilyl chloride (524 mg, 3.48 mmol). The mixture was stirred at room temperature for 2 hours, and thereto was added a saturated aqueous ammonium chloride solution. The mixture was extracted with ethyl acetate, and the organic layer was washed with water and saturated saline, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure, and the resulting residue was purified by silica gel column chromatography to give the title compound (356 mg, 57%).

出典