Reference of 122-05-4, The chemical industry reduces the impact on the environment during synthesis 122-05-4, name is Pyrazine-2,5-dicarboxylic acid, I believe this compound will play a more active role in future production and life.
Example 42: Synthesis of (tetrakis(2′,6′-difluoro-2, 3′-bipyridinato)(mu-2,5-pyrazinedicarboxylate) diiridium(III), Abbreviation; [Ir(dfpypy)225PDC]2) [0408] [0409] Under argon atmosphere, into a 30 mL Schlenk flask equipped with a stirrer were placed 31 mg (0.15 mmol) of 2,5-pyrazinedicarboxylic acid, 16 mg (0.30 mmol) of sodium methoxide and 20 ml of methanol. And then, the mixture was reacted under stirring at room temperature for 2 hours. After the solvent was distilled off under reduced pressure, 184 mg (0.15 mmol) of di-mu-chloro-tetrakis(2′,6′-difluoro-2, 3′-bipyridinato) diiridium(III) and 25 ml of 2-ethoxyethanol were added to the residue, and then the resultant mixture was reacted under stirring at 110 C for 20 hours. After the completion of the reaction, the solvent was distilled off under reduced pressure. Subsequently, 30 ml of dichloromethane was added to the concentrate, and then the resultant mixture was filtered. The precipitate collected by filtration was washed with pure water, and then dried under reduced pressure, to provide 166 mg of tetrakis(2′,6′-difluoro-2, 3′-bipyridinato)(mu-2,5-pyrazinedicarboxylate) diiridium(III) as an orange solid. (84%) [0410] Additionally, tetrakis(2′,6′-difluoro-2, 3′-bipyridinato)(mu-2,5-pyrazinedicarboxylate) diiridium(III) had the following properties: [0411] 1H-NMR (400MHz, d-DMF, delta (ppm)); 8.64 (d, 2H), 8.51 (s, 2H), 8.46-8.24 (m, 6H), 8.17 (dt, 2H), 7.92 (dd, 2H), 7.73 (ddd, 2H), 7.15 (ddd, 2H), 6.01 (s, 2H), 5.50 (s, 2H) FD-MS (M/Z): 1316 M+
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, Pyrazine-2,5-dicarboxylic acid, other downstream synthetic routes, hurry up and to see.
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;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem