تفاعل #2348092

معادلة التفاعل

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

المذيبات

toluene

ظروف التفاعل

المعالجة

1. 1
   درجة الحرارةthe mixture was heated
2. 2
   أخرىAfter terminating
3. 3
   أخرىthe reaction
4. 4
   استخلاصthe aqueous layer was extracted with toluene
5. 5
   غسيلwashed with saturated saline
6. 6
   تجفيفdried over anhydrous magnesium sulfate
7. 7
   workup.DISTILLATIONThe solvent was distilled off under reduced pressure
8. 8
   أخرىthe resulting residue was purified by silica gel column chromatography
9. 9
   أخرىsubjected to recrystallization

الإجراء التجريبي

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.

المصدر