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. 89202-89-1, name is 1,4-Dimethyl-1H-pyrazole-3-carboxylic acid, A new synthetic method of this compound is introduced below., COA of Formula: C6H8N2O2
1,4-Dimethyl-1H-pyrazole-3-carbonyl chloride 1,4-Dimethyl-1H-pyrazole-3-carboxylic acid (190 mg) was weighed to a round bottom flask and thionyl chloride (1 ml) was added. The reaction was heated to reflux for 6 h then overnight at RT. After this time thionyl chloride was evaporated and the residue azeotroped with toluene to afford the title compound, 200 mg. 1H NMR (CDCl3) delta 7.2 (m, 1H), 3.98 (s, 3H), 2.27 (s, 3H).
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; Glaxo Group Limited; Hamblin, Julie Nicole; Jones, Paul Spencer; Keeling, Suzanne Elaine; Le, Joelle; Mitchell, Charlotte Jane; Parr, Nigel James; (136 pag.)US9326987; (2016); B2;,
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