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2-(2'-fluorobiphenyl-2-yl)-1-methyl-1H-benzoimidazole[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
75%
With [ruthenium(II)(eta6-1-methyl-4-isopropyl-benzene)(chloride)(mu-chloride)]2; potassium carbonate; triphenylphosphine; In benzene; at 150℃; for 24h;Sealed tube;
General procedure: In a 30-mL sealed tube, <strong>[2622-63-1]1-methyl-2-phenylbenzimidazole</strong> (1, 0.25mmol), [RuCl2(p-cymene)]2 (0.0125 mmol), Ph3P (0.075 mmol),K2CO3 (0.50 mmol), and iodoarene (0.25 mmol) were combined inanhydrous benzene (2 mL) under air. The mixture was then stirredat 150 °C for 24 h. The mixture was cooled to r.t., diluted with EtOAc, and filtered through a small pad of Celite. The filtrate was concentrated in vacuo and purified by flash chromatography (silicagel, EtOAc?hexane) to give the analytically pure 2-(biphenyl-2-yl)benzimidazoles.
With carbon disulfide; cycl-isopropylidene malonate; triethylamine; copper(l) chloride; In N,N-dimethyl-formamide; at 100℃; for 4h;Inert atmosphere;
General procedure: A mixture of Meldrum?s acid (1 mmol) and Et3N (2 mmol) in DMF was stirred for 15 min at r.t. Then, CS2 (1 mmol) was added and stirred for 15 min. Then, the obtained mixture was added to a stirred solution of aryl halide (1 mmol) and CuCl (0.1 mmol) in DMF (2 ml), and heated at 100 C for 4h. When the reaction was completed (TLC), the mixture was extracted with CH2Cl2 (3 3ml) and H2O (3ml). The organic layer was separated and dried (Na2SO4) and the solvent was evaporated in vacuo to give the diaryl disulfide. The product was purified by column chromatography on silica gel (EtOAc / Petroleum ether, 1:4).
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