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. 144689-93-0, name is Ethyl 4-(1-hydroxy-1-methylethyl)-2-propylimidazole-5-carboxylate, A new synthetic method of this compound is introduced below., HPLC of Formula: C12H20N2O3
Weigh 24.0 g of compound 1, 55.7 g of compound 2, And add 124g of potassium carbonate, Then 200 mL of butanone was added, Warmed to 60 C, Stir for two hours, Cool to 45 , The composite catalyst (a mixture of polyethylene glycol 400 and N, N-dimethylacetamide in a mass ratio of 5: 1) Continue stirring for 4 hours, TLC detection, Show two kinds of raw materials are not left. The reaction is over, filter, The filtrate was collected, concentrate, Get oil, A mixture of 50 mL of ethanol and water (2: 1 by volume) Stirring, A large number of solid precipitation, filter, Collect the solid, Washed with 50mL n-hexane beating, The target compound 67.3g, Yield 93.8% The HPLC purity was 99.3%.
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; Disha Pharmaceutical Group Co., Ltd.; Zhang Zhaoxing; Zhang Hongqiang; Qin Litai; Li Wei; Li Zongwen; Xia Haijian; (6 pag.)CN103012382; (2016); B;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem