Potassium Carbonate → 2-[3-(dibenzothiophen-4-yl)phenyl]-1-phenyl-1H-benzimidazole

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Reaction Steps

In a 50 mL three-neck flask were put 1.2 g (3.3 mmol) of 2-(3-bromophenyl)-1-phenyl-1H-benzimidazole, 0.8 g (3.3 mmol) of dibenzothiophene-4-boronic acid, and 50 mg (0.2 mmol) of tri(ortho-tolyl)phosphine. The atmosphere in the flask was replaced with nitrogen. To this mixture were added 3.3 mL of a 2.0 mmol/L aqueous solution of potassium carbonate, 12 mL of toluene, and 4 mL of ethanol. This mixture was stirred to be degassed under reduced pressure. To this mixture was added 7.4 mg (33 mmol) of palladium(II) acetate, and the mixture was stirred at 80° C. for 6 hours under a nitrogen stream.

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