89202-89-1, name is 1,4-Dimethyl-1H-pyrazole-3-carboxylic acid, belongs to pyrazoles-derivatives compound, is considered to be a conventional heterocyclic compound, which is widely used in drug synthesis. The chemical synthesis route is as follows. COA of Formula: C6H8N2O2
Intermediate 971 ,4-Dimethyl-1 H-pyrazole-3-carbonyl chloride Thionyl chloride (4 ml) was added to 1 ,4-dimethyl-1 H-pyrazole-3-carboxylic acid (0.5g) and the reaction was heated at 800C for 2h. Further thionyl chloride (2ml) was added and the reaction was heated at 800C for 1 h. The reaction was evaporated, then azeotroped with toluene to give title compound, 511 mg. 1H NMR (CDCI3) delta 7.3 (s, 1 H), delta 4 (s, 3H), delta 2.2 (s, 3H).
The synthetic route of 89202-89-1 has been constantly updated, and we look forward to future research findings.