反応 #157988

反応方程式

N-[4-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-2,6-dimethylpheyl]quinoline-6-carboxamide-1-oxide

phosphorus oxychloride

potassium carbonate

→

4-chloro-N-[4-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-2,6-dimethylphenyl]quinoline-6-carboxamide

収率 23.0%

反応条件

後処理

1. 1
   抽出extracted twice with ethyl acetate
2. 2
   洗浄washed with water
3. 3
   乾燥dried over anhydrous magnesium sulfate
4. 4
   その他The drying agent (anhydrous magnesium sulfate) was removed by filtration
5. 5
   workup.DISTILLATIONthe solvent was distilled off under the reduced pressure
6. 6
   その他The residue was purified by column chromatography

実験手順

To crude product of N-[4-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-2,6-dimethylpheyl]quinoline-6-carboxamide-1-oxide (97 mg), phosphorus oxychloride (3.0 g) was added and the mixture was stirred under heating at 100° C. for 1 hour. The reaction solution was poured into ice water, neutralized with potassium carbonate and extracted twice with ethyl acetate. The organic phases were combined and washed with water, and dried over anhydrous magnesium sulfate. The drying agent (anhydrous magnesium sulfate) was removed by filtration and the solvent was distilled off under the reduced pressure. The residue was purified by column chromatography to obtain 2-chloro-N-[4-(,1,1,2,3,3,3-heptafluoropropan-2-yl)-2,6-dimethylphenyl]quinoline-6-carboxamide (35 mg, yield 35%) and 4-chloro-N-[4-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-2,6-dimethylphenyl]quinoline-6-carboxamide (23 mg, yield 23%).

出典