Application of 51516-70-2,Some common heterocyclic compound, 51516-70-2, name is 5-Amino-1-(4-fluorophenyl)-1H-pyrazole-4-carbonitrile, molecular formula is C10H7FN4, 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.
General procedure: To a stirred solution of the intermediate compounds 1a-1d (1 mmol) and triethylamine (2 mmol) in DMF (12 mL) medium, a mixture of EDCI (1 mmol) and HOBt (1mmol) was added and the reaction mixture was stirred at room temperature for 30 min, then a mixture of compounds 2a-2d (1 mmol) and DMF (5 mL) was added, the reaction was stirred at room temperature. And the reaction progress was monitored by TLC. After completion of the reaction, the product was added into chloroform, then extracted from chloroform with water, and washed successively with 0.2 mol/L hydrochloric acid, water,2 mol/L sodium hydroxide, water, saturated sodium chloride, then dried, concentrated and purified by preparative thin layer chromatography (PE:EA = 8:1) followed by recrystallization from ethanol.
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 5-Amino-1-(4-fluorophenyl)-1H-pyrazole-4-carbonitrile, its application will become more common.
Reference:
Article; Xiao, Jin-Jing; Liao, Min; Chu, Ming-Jie; Ren, Zi-Li; Zhang, Xin; Lv, Xian-Hai; Cao, Hai-Qun; Molecules; vol. 20; 1; (2015); p. 807 – 821;,
Pyrazole – Wikipedia,
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