Synthetic Route of 622392-04-5, In the chemical reaction process, reaction time, type of solvent, can easily affect the result of the reaction, thereby determining the yield and properties of the reaction product. An updated downstream synthesis route of 622392-04-5 as follows.
a) 2-Bromo-5- (4- [ 1 ,2,4] triazol- 1 -yl-but- 1 -ynyl)-pyrazine A mixture of 2.00 g (7.0 mmol) 2-bromo-5-iodo-pyrazine, 1.02 g (8.4 mmol) 1- but-3-ynyl- IH-[1, 2,4] triazole, 9.95 g (98.3 mmol) triethylamine, 147 mg (0.8 mmol) copper (I) iodide and 404 mg (0.3 mmol) tetrakis(triphenylphophine) palladium (0) in 30 ml DMF were stirred at room temperature overnight. After addition of 80 ml dichloromethane and 100 ml 0.5N HCl the phases were separated and the organic layer was dried over Na2SCv Column chromatography (silica, ethyl acetaterheptane 0:1 to 1:1) returned 0.90 g (46%) 2-bromo-5-(4-[ 1,2,4] triazol- 1-yl- but-l-ynyl)-pyrazine as a yellow solid. MS: M = 278.0 (ES+) 1H-NMR (400 MHz, D.-DMSO): delta= 3.08 (t, 6.5 Hz, 2H), 4.47 (t, 6.5 Hz, 2H), 8.02 (s, IH), 8.49 (s, IH), 8.62 (s, IH), 8.82 (s, IH).
According to the analysis of related databases, 622392-04-5, the application of this compound in the production field has become more and more popular.
Reference:
Patent; F. HOFFMANN-LA ROCHE AG; WO2007/39226; (2007); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem