Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 3524-32-1, name is 5-Amino-1,3-dimethylpyrazole, A new synthetic method of this compound is introduced below., Product Details of 3524-32-1
General procedure: In a 50 mL single-mouth flask,Salicylaldehyde (1 mmol) was added in sequence,Ethyl cyanoacetate (1 mmol) and 3-methyl-1-phenyl-5-aminopyrazole (1 mmol),Triethylamine (0.1 mmol) and ethanol (8 mL),The reaction was stirred under reflux for 8 h.After the reaction is over,Cool to room temperature.Rotate the solvent under reduced pressure,Get a rough product,The crude product was recrystallized from 95% ethanol.5-amino-1-methyl-3-phenylcoumarin[4,3-d]pyrazolo[3,4-b]pyridine-6(3H)-one (Ia):Yield 63%
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; Soochow University (Suzhou); Shi Daqing; Zhang Mengye; Xu Wentao; Wang Ning; Huang Zhibin; (17 pag.)CN108409748; (2018); A;,
Pyrazole – Wikipedia,
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