In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 120984-76-1, name is 2-Bromo-3-methylpyrazine belongs to Pyrazines compound, it is a common compound, a new synthetic route is introduced below. Recommanded Product: 2-Bromo-3-methylpyrazine
4-[3-Methyl-4-(4,4,5,5-tetramethyl-1 ,3 ,2-dioxaborolan-2-yl)phenoxy]furo[3 ,2-c]pyridine (C2) (250 mg, 0.712 mmol), 5-bromo-4,6-dimethylpyrimidine (160 mg, 0.855 mmcl), tris(dibenzylideneacetone)dipalladium(0) (95%, 26.9 mg, 0.142 mmol), tricyclohexyiphosphine (79.9 mg, 0.285 mmcl) and potassium phosphate (302 mg, 1.42 mmol) were combined in a 3:1mixture of 1 ,4-dioxane and water (12 mL), and subjected to irradiation in a microwave reactor at120 00 for 5 hours. The reaction mixture was filtered through Celite; the filtrate was concentrated under reduced pressure, taken up in ethyl acetate, filtered through silica gel (1 g), and concentrated in vacuo. Purification via silica gel chromatography (Gradient: 0% to 100% ethyl acetate in heptane) afforded the product as a colorless oil. Yield: 123 mg, 0.371 mmol,52%. LCMS m/z 332.1 (M+H). 1H NMR (500 MHz, ODd3) oe 8.98 (s, 1H), 8.07 (d, J5.9 Hz, 1H),7.67 (d, J=2.2 Hz, 1H), 7.25-7.27 (m, 1H, assumed; partially obscured by solvent peak), 7.24(br d, J=2.4 Hz, 1H), 7.19 (brdd, J=8.3, 2.4 Hz, 1H), 7.08 (d, J=8.3 Hz, 1H), 6.90 (dd, J=2.2, 1.0 Hz, 1H), 2.27 (s, 6H), 2.04 (s, 3H).
The synthetic route of 120984-76-1 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; PFIZER INC.; COE, Jotham, Wadsworth; ALLEN, John, Arthur; DAVOREN, Jennifer, Elizabeth; DOUNAY, Amy, Beth; EFREMOV, Ivan, Viktorovich; GRAY, David, Lawrence, Firman; GUILMETTE, Edward, Raymond; HARRIS, Anthony, Richard; HELAL, Christopher, John; HENDERSON, Jaclyn, Louise; MENTE, Scot, Richard; NASON, Deane, Milford, II; O’NEIL, Steven, Victor; SUBRAMANYAM, Chakrapani; XU, Wenjian; WO2014/72881; (2014); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem