62802-42-0 ,Some common heterocyclic compound, 62802-42-0, molecular formula is C4H2ClFN2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.
A large microwave vial was charged with potassium (2Z)-2-buten-2-yltrifluoroborate (Sigma- Aldrich, 900 mg, 5.6 mmol), potassium phosphate (3.54 g, 16.7 mmol) and 2-chloro-5- fluoro-pyrimidine (686 ^L, 5.6 mmol). DMF (10 mL) and water (2 mL) were added and the mixture was deoxygenated with an Ar stream. Tetrakis(triphenylphosphine)palladium (642 mg, 0.56 mmol) was added, and the slurry was again deoxygentaed with an Ar stream. The vial was then capped and heated in the microwave at 95 C for 12 h. The reaction mixture was then partitioned between water (60 mL) and diethyl ether (2X). The combined organic layers were washed with water (1X) and brine (1X), dried over anhydrous sodium sulfate, and concentrated in vacuo. The residue was purified by silica gel chromatography (eluent: pure DCM) to provide 403.1 (476 mg, 56% yield) as a light yellow oil. LCMS-ESI (pos.) m/z: 153.2 (M+H)+.
According to the analysis of related databases, 62802-42-0, the application of this compound in the production field has become more and more popular.
Reference:
Patent; AMGEN INC.; 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.; HORNE, Daniel B.; HOUZE, Jonathan; KALLER, Matthew R.; KAYSER, Frank; KHAKOO, Aarif Yusuf; KOPECKY, David J.; LAI, Su-Jen; MA, Zhihua; MEDINA, Julio C.; MIHALIC, Jeffrey T.; NISHIMURA, Nobuko; OLSON, Steven H.; PATTAROPONG, Vatee; SWAMINATH, Gayathri; WANG, Xiaodong; WANSKA, Malgorzata; YANG, Kevin; YEH, Wen-Chen; (700 pag.)WO2018/97945; (2018); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia