反应详情

温度

100 °C

Into a 500 mL three-neck flask were put 6.5 g (26 mmol) of 4-bromodiphenylamine, 7.5 g (26 mmol) of 9-phenyl-9H-carbazole-3-boronic acid, and 400 mg (1.3 mmol) of tri(o-tolyl)phosphine. The atmosphere in the flask was replaced with nitrogen. To the mixture were added 100 mL of toluene, 50 mL of ethanol, and 14 mL (0.2 mol/L) of potassium carbonate aqueous solution. Under reduced pressure, this mixture was degassed while being stirred. After the degassing, 67 mg (30 mmol) of palladium(II) acetate was added to the mixture. This mixture was refluxed at 100° C. for 10 hours. After the reflux, an aqueous layer of this mixture was extracted with toluene, and the extract was combined with an organic layer and then washed with a saturated saline solution. The organic layer was dried with magnesium sulfate. After the drying, this mixture was subjected to gravity filtration. The obtained filtrate was condensed to give an oily light brown substance. This oily substance was purified by silica gel column chromatography (a developing solvent was a mixed solvent of hexane:toluene=4:6). A white solid obtained after the purification was recrystallized with dichloromethane/hexane to give 4.9 g of a white solid, which was the object of the synthesis, in a yield of 45%.

1. customInto a 500 mL three-neck flask were put
2. customUnder reduced pressure, this mixture was degassed
3. extractionAfter the reflux, an aqueous layer of this mixture was extracted with toluene
4. washwashed with a saturated saline solution
5. dry with materialThe organic layer was dried with magnesium sulfate
6. filtrationAfter the drying, this mixture was subjected to gravity filtration
7. customcondensed
8. customto give an oily light brown substance
9. customThis oily substance was purified by silica gel column chromatography (a developing solvent
10. customA white solid obtained
11. customafter the purification
12. customwas recrystallized with dichloromethane/hexane