Some common heterocyclic compound, 120068-79-3, name is 5-Amino-1-(2,6-dichloro-4-(trifluoromethyl)phenyl)-1H-pyrazole-3-carbonitrile, molecular formula is C11H5Cl2F3N4, 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. Recommanded Product: 120068-79-3
General procedure: Phenylpyrazole (0.2 mmol), arylboronic acid (0.4 mmol), NIS (0.2 mmol), [Pd] (10 mol%), NaHCO3 (0.4 mmol) and C2H5OH:H2O (3:1, 10 mL), were added to a Schlenk tube. Then the tube was charged with N2 and the reaction mixture was stirred at 80 C for 18 h. After the completion of the reaction, as monitored by TLC, the mixture was cooled and filtrated. The filtrate was extracted with ethyl acetate and washed with brine. Then the combined organic extracts were dried over Na2SO4, concentrated under vacuum and the resulting residue was purified by silica gel column chromatography to afford the desired products.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 120068-79-3, its application will become more common.
Reference:
Article; Lv, Ting; Zhang, Xiao-Hong; Han, Jiang-Sheng; Zhong, Ping; Journal of Fluorine Chemistry; vol. 137; (2012); p. 44 – 49;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics