27258-33-9, name is 1-Methyl-1H-pyrazole-5-carbaldehyde, 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. Safety of 1-Methyl-1H-pyrazole-5-carbaldehyde
General procedure: A mixture of the corresponding secondary phosphinechalcogenide1 (1.00 mmol) and carbaldehyde2 or 4 (1.05 mmol) in toluene(2 ml) was stirred at 23-50 C for 6 to 94 h in argon atmosphere (seeOnline Supplementary Materials for details). Toluene was removed undervacuum, and the residue was washed with Et2O (1 ml), dissolved in CHCl3and re-preciptatedwith n-hexane. The resulting solid was collected, driedunder vacuum to afford alcohols 3 or 5.
The synthetic route of 27258-33-9 has been constantly updated, and we look forward to future research findings.