Reaktion #507648

Reaktionsgleichung

sodium carbonate

1-(4-bromophenyl)-2-methyl-1H-benzimidazole

10-naphthalene-2-yl-anthracene-9-boronic acid

1,2-dimethoxyethane

→

yellowish white solids

Ausbeute 51.6%

1-[4-(10-naphthalene-2-yl-anthracene-9-yl)-phenyl]-2-methyl-1H-benzimidazole

Ausbeute 51.6%

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturwith heating for 7 hours
2. 2
   SonstigeAfter completion of the reaction
3. 3
   Waschenwashed with water
4. 4
   Trocknendried with sodium sulfate
5. 5
   SonstigeRemoving the solvent
6. 6
   workup.DISTILLATIONby distillation

Vorschrift

Dissolving 3.3 g (11 mmol) of 1-(4-bromophenyl)-2-methyl-1H-benzimidazole, 4.0 g (11 mmol) of 10-naphthalene-2-yl-anthracene-9-boronic acid and 0.27 g of tetrakis (triphenylphosphine) palladium into 40 milliliter of 1,2-dimethoxyethane, adding 20 milliliter of 2.0M sodium carbonate aqueous solution, the resultant suspension was refluxed with heating for 7 hours. After completion of the reaction, the precipitated solids were dissolved into the dichloromethane, washed with water and dried with sodium sulfate. Removing the solvent by distillation and by refining the resultant product with the use of a silicagel column chromatography (dichloro methane-ethyl acetate), 2.9 g of yellowish white solids were obtained (yield: 49%). As a result of MS analysis, it was recognized that the yellowish white solids were identified as the aimed substance and that m/e=510 for molecular weight of 510.21.

Quelle