反応 #2348092

反応方程式

water

p-toluenesulfonic acid monohydrate

compound ( 7 )

1-(2,3-difluoro-4-ethoxy-6-methylphenyl)-2-(4-pentylcyclohexyl)ethanol

water

→

1-(2,3-difluoro-4-ethoxy-6-methylphenyl)-2-(4-pentylcyclohexyl)ethene

溶媒

toluene

反応条件

後処理

1. 1
   温度the mixture was heated
2. 2
   その他After terminating
3. 3
   その他the reaction
4. 4
   抽出the aqueous layer was extracted with toluene
5. 5
   洗浄washed with saturated saline
6. 6
   乾燥dried over anhydrous magnesium sulfate
7. 7
   workup.DISTILLATIONThe solvent was distilled off under reduced pressure
8. 8
   その他the resulting residue was purified by silica gel column chromatography
9. 9
   その他subjected to recrystallization

実験手順

0.55 g of p-toluenesulfonic acid monohydrate was added to the compound (7) having been dissolved in 120 mL of toluene, and the mixture was heated under stirring by using a Dean-Stork trap until completion of azeotrope of water. After terminating the reaction by adding water, the aqueous layer was extracted with toluene, washed with saturated saline, and then dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was purified by silica gel column chromatography and then subjected to recrystallization to obtain 6.53 g of 1-(2,3-difluoro-4-ethoxy-6-methylphenyl)-2-(4-pentylcyclohexyl)ethene (Compound 1-1-3-18) as colorless crystals.

出典