تفاعل #554601

معادلة التفاعل

dioxane

triphenylenyl trifluoromethanesulfonate

bis(pinacolato)diboron

potassium acetate

→

triphenylene-2-boronic acid

المردود 51.9%

المذيبات

water

ظروف التفاعل

المعالجة

1. 1
   درجة الحرارةthe resultant was refluxed
2. 2
   درجة الحرارةwhile heating for 8 hours
3. 3
   استخلاصfollowed by extraction with toluene
4. 4
   أخرىAn aqueous phase was removed
5. 5
   غسيلan organic phase was washed with water and saturated brine
6. 6
   تجفيفdried with magnesium sulfate
7. 7
   أخرىMagnesium sulfate was removed
8. 8
   workup.DISTILLATIONthe solvent was distilled under reduced pressure
9. 9
   أخرىThe resulting residue was purified by means of silica gel column chromatography

الإجراء التجريبي

Under an argon atmosphere, 37.6 g of triphenylenyl trifluoromethanesulfonate, 27.9 g of bis(pinacolato)diboron, 2.45 g of 1,1′-bis(diphenylphosphino)ferrocene palladium (II) dichloride dichloromethane complex, 1.66 g of 1,1′-bis(diphenylphosphino)ferrocene and 29.4 g of potassium acetate were placed in a flask. 600 mL of anhydrous dioxane was added thereto, and the resultant was refluxed with stirring while heating for 8 hours. After cooling to room temperature, 300 mL of water was added to the reaction solution, followed by extraction with toluene. An aqueous phase was removed, and an organic phase was washed with water and saturated brine, and then dried with magnesium sulfate. Magnesium sulfate was removed and the solvent was distilled under reduced pressure. The resulting residue was purified by means of silica gel column chromatography, whereby 14.1 g (yield: 40%) of triphenylene-2-boronic acid picohal ester was obtained.

المصدر