Application of 1193-21-1, Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps,and cheap raw materials. 1193-21-1, name is 4,6-Dichloropyrimidine. A new synthetic method of this compound is introduced below.
(a) 4-Chloro-6-[4-(trifluoromethyl)phenyl]pyrimidine. To a 500-mL, round-bottomed flask was added 4,6-dichloropyrimidine (14 g, 95 mmol, Aldrich), 4-(trifluoromethyl)phenylboronic acid (6.0 g, 32 mmol, Aldrich), acetonitrile (95 mL) and 1 M aqueous solution of sodium carbonate (95 mL). The mixture was deoxygenated by sparging with N2 for 15 min, and Pd(PPh3)4 (1.9 g, 1.6 mmol, Strem) was added. The resulting yellow mixture was heated at 80 C. with stirring for 15 h. After allowing to cool to 25 C., the mixture was evaporated under reduced pressure. The residue was diluted with 10% aqueous solution of NaHCO3 and extracted with CH2Cl2. The combined extracts were dried over Na2SO4, filtered and evaporated under reduced pressure. The residue was purified by silica gel column chromatography (gradient: 1.5-10% EtOAc/hexane) to give the title compound as a white solid. MS (ESI, pos. ion) m/z: 259 [M+1].
At the same time, in my other blogs, there are other synthetic methods of this type of compound,1193-21-1, 4,6-Dichloropyrimidine, and friends who are interested can also refer to it.
Reference:
Patent; Doherty, Elizabeth M.; Katon, Jodie; Norman, Mark H.; Retz, Daniel M.; Wang, Xianghong; Bo, Yunxin Y.; Tamayo, Nuria; Nishimura, Nobuko; Liao, Hongyu; US2006/241296; (2006); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia