반응 #651852

반응 방정식

2-fluoro-4-(3-methyl-3-hydroxy-1-butynyl)toluene

sodium hydroxide

benzene

→

2-fluoro-4-ethynyltoluene

수율 40.0%

용매

water

반응 조건

후처리

1. 1
   온도was refluxed for 3 hours
2. 2
   온도After cooling
3. 3
   여과Insoluble materials were filtered away with Celite (trade name of Johns-Manville Company)
4. 4
   건조the residue was dried over anhydrous magnesium sulfate
5. 5
   기타The drying agent was separated away
6. 6
   workup.DISTILLATIONthe solvent was carefully distilled away from the solution under reduced pressure
7. 7
   기타the residue was purified by silica gel chromatography (elution liquid: hexane)
8. 8
   workup.DISTILLATIONdistilled away the solvent under reduced pressure (boiling point: 100° C., 20 mmHg)

실험 절차

The mixture of 2-fluoro-4-(3-methyl-3-hydroxy-1-butynyl)toluene (0.035 mol), sodium hydroxide (0.07 mol), and benzene 40 ml was refluxed for 3 hours. After cooling, water 40 ml was added and the mixture was thoroughly stirred. Insoluble materials were filtered away with Celite (trade name of Johns-Manville Company), and the residue was dried over anhydrous magnesium sulfate. The drying agent was separated away, the solvent was carefully distilled away from the solution under reduced pressure, the residue was purified by silica gel chromatography (elution liquid: hexane) and then distilled away the solvent under reduced pressure (boiling point: 100° C., 20 mmHg) to obtain cororless oily 2-fluoro-4-ethynyltoluene (0.014 mol).

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