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9-Phenyl-3-[4-(1-phenyl-1H-benzimidazol-2-yl)phenyl]-9H-carbazole synthesis

5synthesis methods
-

Yield:1294411-24-7 80%

Reaction Conditions:

with tetrakis(triphenylphosphine) palladium(0);potassium carbonate in ethanol;water;toluene; for 6 h;Inert atmosphere;Reflux;

Steps:

2.3 Synthesis of BnImCz

3-BrPCz (6.44g, 0.02mol) was added to a three-necked flask, BnImBA (6.91g, 0.022mol), aqueous potassium carbonate (38.3g, 0.06mol), 100ml of toluene, 50ml of ethanol; under nitrogen with stirring was added Pd (PPh3)4(0.23g, 0.2mmol), after the replacement with nitrogen, the reaction was refluxed for 6 hours; after completion of the reaction, was cooled to room temperature, the layers were separated and the organic phase was washed with saturated aqueous sodium chloride solution until neutral, dried over anhydrous sodium sulfate and filtered to give a brown liquid; The solvent was removed by rotary evaporation, silica gel column, eluent VPetroleum ether: VEthyl acetate= 1: 1 was purified to obtain the white solid in 80% yield.

References:

CN104370904,2016,B Location in patent:Paragraph 0062; 0067-0069