In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 5334-40-7, name is 4-Nitro-1H-pyrazole-3-carboxylic acid belongs to pyrazoles-derivatives compound, it is a common compound, a new synthetic route is introduced below. Application In Synthesis of 4-Nitro-1H-pyrazole-3-carboxylic acid
Thionyl chloride (6.28ml_, 86.07mmol) was added to an ice cooled solution of 4-nitro-1 H- pyrazole-3-carboxylic acid (10.4 g, 66.21 mmol) in methanol (150 ml_). The resulting solution was stirred at RT ON. The day after MeOH was removed under vacuum; toluene was added and dried again. The solid was suspended in pentane and filtered under vacuum to afford methyl 4-nitro-1 H-pyrazole-3-carboxylate (p68, 1 1.15 g, y= 98%) as creamy solid. MS (mlz): 171 .9 [MH]+
The synthetic route of 5334-40-7 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; CHRONOS THERAPEUTICS LIMITED; MICHELI, Fabrizio; CREMONESI, Susanna; SEMERARO, Teresa; TARSI, Luca; GIBSON, Karl Richard; (116 pag.)WO2019/81939; (2019); A1;,
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