Adding a certain compound to certain chemical reactions, such as: 62802-42-0, 2-Chloro-5-fluoropyrimidine, 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, Recommanded Product: 2-Chloro-5-fluoropyrimidine, blongs to pyrimidines compound. Recommanded Product: 2-Chloro-5-fluoropyrimidine
To a solution of 2-chloro-5-fluoropyrimidine (10.0 g, 75.46 mmol, Sigma Aldrich) in DMF (100 mL) was added tributyl(vinyl)tin (31.1 g, 98.09 mmol) at ambient temperature. The reaction mixture was purged with N2 for 5 mm and then Pd(PPh3)4 (2.62 g, 2.26 mmol) was added. The reaction mixture was further degassed with N2 for 5 mm and then stirred at 100 C for 24 h. After completion of the reaction (m onitored by TLC), the reaction mixture was cooled to ambient temperature and quenched with water (100 mL). The aqueous layer was extracted with Et20 (2 x 100 mL) and the combined organic layers were washed with brine (100 mL), dried over anhydrous Na2504, and then concentrated in vacuo providing initial product which was purified by silica gel column chromatography (Redisep column 120 g; elution: 6% EtOAc in hexanes). This provided Example 351.1 (8.0 g, 85% yield) as an oil. 1H NMR (400 MHz, CDC13) oe 8.58 – 8.49 (m, 2H), 6.86 (dd, J = 17.4, 10.6 Hz, 1H), 6.53 (d,J= 17.3 Hz, 1H), 5.70 (d,J= 10.6 Hz, 1H).
At the same time, in my other blogs, there are other synthetic methods of this type of compound,62802-42-0, 2-Chloro-5-fluoropyrimidine, and friends who are interested can also refer to it.
Reference:
Patent; AMGEN INC.; BROWN, Matthew; CHEN, Ning; CHEN, Xiaoqi; CHEN, Yinhong; CHENG, Alan C.; CONNORS, Richard V.; DEIGNAN, Jeffrey; DRANSFIELD, Paul John; DU, Xiaohui; FU, Zice; HARVEY, James S.; HEATH, Julie Anne; HEUMANN, Lars V.; HOUZE, Jonathan; KAYSER, Frank; KHAKOO, Aarif Yusuf; KOPECKY, David J.; LAI, Su-Jen; MA, Zhihua; MEDINA, Julio C.; MIHALIC, Jeffrey T.; OLSON, Steven H.; PATTAROPONG, Vatee; SWAMINATH, Gayathri; WANG, Xiaodong; WANSKA, Malgorzata; YEH, Wen-Chen; (815 pag.)WO2018/97944; (2018); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia