Adding a certain compound to certain chemical reactions, such as: 42098-25-9, name is 5-Chloro-1-methyl-4-nitro-1H-pyrazole, belongs to pyrazoles-derivatives compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 42098-25-9, Formula: C4H4ClN3O2
Example 354 5-amino-2-(2,6-difluorophenyl)-N-[1-methyl-5-(9-oxa-3,7-diazabicyclo[3.3.1]nonan-3-yl)pyrazol-4-yl]thiazole-4-carboxamide 354 [1008] RRN No.1703,1706,1708,1710Step A. To a microwave reaction vial was added 5-chloro-1-methyl-4-nitro-1H-pyrazole (141 mg, 0.88 mmol), tert-butyl 9-oxa-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate (200 mg, 0.88 mmol). Ethanol (8 mL) and diisopropylethylamine (0.92 mL, 5.25 mmol) were added and the mixture was irradiated with a microwave for 60 min at 130 C. The mixture was cooled, concentrated and purified via flash chromatography, ethyl acetate/ heptane 0% to 100% to afford yellow oil tert-butyl 7-(2-methyl-4-nitro-pyrazol-3-yl)-9-oxa-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate (202 mg, 65%).
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