Adding a certain compound to certain chemical reactions, such as: 912773-24-1, name is 6-Bromoimidazo[1,2-a]pyrazine, belongs to pyrazines compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 912773-24-1, SDS of cas: 912773-24-1
To a solution of 6-bromoimidazo[1,2-a]pyrimidine (2.4 g, 12.1 mmol) in DMF, were sequentially added (4-methylpiperazin-1-yl)(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)methanone (80% of 4.1 g, 12.1 mmol), a solution of NaHCO3 (3.1 g, 36.3 mmol) in water (30 mL), water (3 mL) and (A-Phos)2PdCl2 (400 mg, 0.60 mmol). The reaction mixture was heated at 90 C. for 4 h, then was diluted with water (100 mL) and extracted with EtOAc (3*100 mL). The combined organic layer was dried over Na2SO4, filtered and concentrated under reduced pressure. The residue was purified by flash column chromatography (silica gel, eluent CHCl3/MeOH 95:5 to 85:15) to afford of (4-(imidazo[1,2-a]pyrazin-6-yl)phenyl)(4-methylpiperazin-1-yl)methanone (1.5 g, 65%). 1H NMR (400 MHz, CDCl3) delta 8.60 (d, J=2.0 Hz, 1H), 8.10 (d, J=4.0, 1H), 7.80 (d, J=8.0 Hz, 1H), 7.58 (m, 4H) 7.39 (d, J=8.0, 1 H), 3.84 (br s, 2H), 3.50 (br s, 2H), 2.40 (br s, 4H), 2.35 (s, 3H); MS (ESI) m/z 322 [M+1]
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Reference:
Patent; Agency for Science, Technology and Research; Nacro, Kassoum; Duraiswamy, Athisayamani Jeyaraj; Rao, Lohitha; US2014/371199; (2014); A1;,
Pyrazine – Wikipedia,
Pyrazine | C4H4N2 – PubChem