Potassium Carbonate → 2-[4-(2,8-diphenyldibenzothiophen-4-yl)phenyl]-1-phenyl-1H-benzimidazole

Participants

Reaction Steps

In a 50-mL three-neck flask were put 1.8 g (5.0 mmol) of 2-(4-bromophenyl)-1-phenyl-1H-benzimidazole, 2.2 g (5.8 mmol) of 2,8-diphenyldibenzothiophen-4-boronic acid, and 76 mg (0.2 mmol) of tri(ortho-tolyl)phosphine. The air in the flask was replaced with nitrogen. To this mixture were added 5.8 mL of a 2.0 mmol/L aqueous solution of potassium carbonate, 19 mL of toluene, and 6 mL of ethanol. Under reduced pressure, this mixture was stirred to be degassed. Then, 11 mg (50 μmol) of palladium(II) acetate was added to this mixture, and the mixture was stirred at 80° C. for 4 hours under a nitrogen stream.

Provenance & Evidence