反応 #8935

反応方程式

ethyl acetate

ortho-toluoyl chloride

triethylamine

→

benzamide

溶媒

methylene chloride

反応条件

後処理

1. 1
   洗浄washed with 5% citric acid, saturated sodium bicarbonate, brine
2. 2
   その他dried
3. 3
   ろ過filtered
4. 4
   濃縮concentrated
5. 5
   その他to afford 420 mg of crude material
6. 6
   その他This was chromatographed on 40 g of silica gel using 50% ethyl acetate/hexane

実験手順

To a solution of 391 mg (1 mmol) of 2R-hydroxy-3-[(2-methylpropyl)(4-aminophenyl)sulfonyl]amino-1S-(phenylmethyl)propylamine in 3 mL of anhydrous methylene chloride, was added 0.42 mL (3 mmol) of triethylamine, then at room temperature, 0.12 mL (0.9 mmol) of ortho-toluoyl chloride was added. After 15 hours at room temp ethyl acetate was added, washed with 5% citric acid, saturated sodium bicarbonate, brine, dried, filtered and concentrated to afford 420 mg of crude material. This was chromatographed on 40 g of silica gel using 50% ethyl acetate/hexane to afford 368 mg of pure benzamide, N-[2R-hydroxy-3-[[(4-aminophenyl)sulfonyl](2-methylpropyl) amino]-1S-(phenylmethyl)propyl]-2-methyl, m/e=516 (M+Li).

出典