A common heterocyclic compound, 402-61-9, name is 5-Methyl-1H-pyrazole-3-carboxylic acid, molecular formula is C5H6N2O2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. 402-61-9.
[(VIVO)(C5H5N2O2)2H2O]2H2O (2) VO(acac)2 (0.0265 g,0.1 mmol) and 5-pyrazol-1H-pyrazol-3-carboxylic acid (0.025 g,0.2 mmol) were mixed and stirred for 3 h in a solution of 95%methanol (8 mL) at room temperature. After two days, purplecrystals of complex were obtained. Yield (based on V): 0.036 g,48.78%. Anal. Calc. For C10H16N4O8V: C, 32.35; H, 4.3; N, 15.09.Found: C, 32.35; H, 4.28; N, 15.05.
The synthetic route of 5-Methyl-1H-pyrazole-3-carboxylic acid has been constantly updated, and we look forward to future research findings.