반응 #2348090

반응 방정식

water

p-toluenesulfonic acid monohydrate

compound ( 6 )

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

water

→

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

용매

toluene

반응 조건

후처리

1. 1
   온도the mixture was heated
2. 2
   기타After terminating
3. 3
   기타the reaction
4. 4
   추출the aqueous layer was extracted with toluene
5. 5
   세척washed with a saturated saline
6. 6
   건조dried over anhydrous magnesium sulfate
7. 7
   workup.DISTILLATIONThe solvent was distilled off under reduced pressure
8. 8
   기타the resulting residue was purified by silica gel column chromatography
9. 9
   기타subjected to recrystallization

실험 절차

0.55 g of p-toluenesulfonic acid monohydrate was added to the compound (6) 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 a 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 2.01 g of 1-(2,3-difluoro-4-ethoxy-6-methylphenyl)-2-(4-propylcyclohexyl)ethene (Compound 1-1-3-17) as colorless crystals.

출처