Reference of 5932-30-9, These common heterocyclic compound, 5932-30-9, name is Ethyl 5-phenyl-1H-pyrazole-3-carboxylate, 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.
The starting material (100 mg, 0.46 mmol) was dissolved in 10 mL of acetone.Add potassium carbonate (190 mg, 1.38 mmol) and potassium iodide (8 mg, 0.046 mmol),Dimethyl sulfate (31.5 mg, 0.25 mmol), refluxing for 4 h,After TLC detects the reaction, it is filtered.The filter cake was washed with 10 mL of ethyl acetate and 10 mL of dichloromethane until no fluorescence.The filtrates were combined and concentrated.Column chromatography purification (petroleum ether: ethyl acetate = 4:1)Yellow solid99mg,Yield 93.4%,
The synthetic route of 5932-30-9 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; China Pharmaceutical University; Wang Jinxin; Yang Kan; Zhi Zhuoer; Nong Keyi; (8 pag.)CN109232426; (2019); A;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics