1260243-04-6, name is Ethyl 5-amino-1H-pyrazole-4-carboxylate, 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. category: pyrazoles-derivatives
To 5-amino-1H-pyrazole-4-carboxylic acid ethyl ester (250 mg, 1.61 mmol) in DCM (10 mL) was added di-tert-butyl dicarbonate (352 mg, 1.61 mmol) and diisopropylethylamine (702 mu, 521 mg, 4.03 mmol) and the reaction stirred at rt overnight. Reaction mixture was diluted with DCM, water added, separated, washed with brine, dried (MgSC ), filtered and concentrated in vacuo. Flash chromatography afforded 1-tert-butyl 4-ethyl 3-aminopyrazole-1,4-dicarboxylate as a white solid (122 mg, 30percent yield). [MH]+ = 256.2
The synthetic route of 1260243-04-6 has been constantly updated, and we look forward to future research findings.