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. 3112-31-0, name is 1H-Pyrazole-3,5-dicarboxylic acid, A new synthetic method of this compound is introduced below., SDS of cas: 3112-31-0
A mixture of 31.7 g (0.203 mol) of diacid 1 and 125 mL of methanol was saturated with gaseous HCl. The mixture was refluxed for 3 h and left overnight at room temperature. The precipitate was filtered off and washed with methanol. Yield 23.5 g (63%), white crystals, mp 142-143C. IR spectrum, nu, cm-1: 3105 br (NH), 1710 s (C=O), 1240 s (C-O-C). 1H NMR spectrum, delta, ppm: 3.82 s (6H, CH3), 6.36 s (1H, 4-H), 14.43 s (1H, NH).
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:
Article; Kharaneko; Russian Journal of Organic Chemistry; vol. 52; 9; (2016); p. 1322 – 1325; Zh. Org. Khim.; vol. 52; 9; (2016); p. 1334 – 1337,4;,
Pyrazole – Wikipedia,
Pyrazoles – an overview | ScienceDirect Topics