反应详情

To a solution of (R)-3-hydroxytetradecanoic acid (36, see preparation below) (9.55 g, 39.1 mmol) and triethylamine (5.90 g, 58.6 mmol) in ethyl acetate (500 mL) was added 2-bromoacetophenone (7.90 g, 39.1 mmol) at room temperature. The mixture was stirred at room temperature for 14 h. The precipitate was removed by filtration, and the filtrate was concentrated in vacuo. The residue was purified by silica gel chromatography (120 g RediSep column, eluting with a gradient of 0% through 30% ethyl acetate/hexanes over 50 min, 85 mL/min) to give the product 37 (10.2 g, 72% yield) as a white solid.

1. customThe precipitate was removed by filtration
2. concentrationthe filtrate was concentrated in vacuo
3. customThe residue was purified by silica gel chromatography (120 g RediSep column
4. washeluting with a gradient of 0% through 30% ethyl acetate/hexanes over 50 min