HCID 11845249, compound → 6,7-dihydro-4H-pyrazolo[5,1-c][1,4]thiazine-2-carbaldehyde

Participants

Reaction Steps

MnO2 (activated) (11.46 g) was added to the CHCl3 (135 mL) solution of (6,7-dihydro-4H-pyrazolo[5,1-c][1,4]thiazin-2-yl)methanol (2.31 g) and refluxed for 1 h under a nitrogen atmosphere. The reaction mixture was filtered through a pad of Celite. The filtrate was concentrated under a reduced pressure. The residue was applied to silica gel column chromatography, then the column was eluted with n-hexane-AcOEt (1/1). The titled compound was obtained as pale yellow crystals (1.78 g, 78%).

Provenance & Evidence