492-98-8, name is 1H,1’H-2,2′-Biimidazole, belongs to imidazoles-derivatives compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. Recommanded Product: 1H,1’H-2,2′-Biimidazole
Example 14: Synthesis of (tetrakis(1-phenylpyrazolato)(mu-biimidazolyl) diiridium(III), Abbreviation; [Ir(ppz)2BIm]2) [0300] [0301] Under argon atmosphere, into a 100 mL Schlenk flask equipped with a stirrer were placed 308 mg (0.30 mmol) of di-mu-chloro-tetrakis(1-phenylpyrazolato) diiridium(III), 40 mg (0.30 mmol) of 2,2′-biimidazole and 60 ml of tetrahydrofuran. And then, the mixture was stirred at room temperature for 7 hours. Subsequently, 83 mg (0.63 mmol) of tert-butoxy potassium (t-BuOK (85 wt% product)) was added to the mixture, and the mixture was reacted under stirring at room temperature for 16 hours. After the completion of the reaction, tetrahydrofuran was distilled off under reduced pressure, and then methylene chloride was added to the residue, and the insoluble substance was removed by filtration. The filtrate was concentrated under reduced pressure. The resultant crude reaction product was subjected to column chromatography with alumina (developing solvent: methylene chloride : 0.5 % triethylamine) for purification, to provide 180 mg of the desired compound as a pale ocher solid. (Isolation yield: 55 %) Additionally, tetrakis(1-phenylpyrazolato)(mu-biimidazolyl) diiridium(III) was a novel compound, which had the following properties: [0302] 1H-NMR (400MHz, CD2Cl2, delta (ppm)); 8.35 (dd, 4H), 7.29 (dd, 4H), 6.76-6.80 (m, 8H), 6.61-6.56 (m, 4H), 6.50-6.48 (m, 4H), 6.39-6.39 (dd, 4H), 6.18 (s, 4H) FD-MS (M/Z): 1088 M+
The synthetic route of 492-98-8 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Ube Industries, Ltd.; FUJIMURA, Osamu; FUKUNAGA, Kenji; IWASA, Takafumi; TANAKA, Yasuhiro; FUJITA, Harunori; MURAKAMI, Tadashi; HONMA, Takashi; MACHIDA, Toshikazu; KASHIHARA, Natsuko; EP2647642; (2013); A1;,
Imidazole – Wikipedia,
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