Sodium Thiosulfate → HCID 22938752, Verbindung

To a solution of aluminum lithium hydride (0.58 g) in THF (51.4 ml) was added dropwise a solution of methyl 1-propyl-1,2,3-triazole-4-carboxylate (2.6 g) in THF (26 ml) at 0° C. The mixture was stirred for 1 hour at room temperature, and an aqueous solution of saturated sodium thiosulfate was added to the mixture at 0° C. The mixture was filtered with Celite, and washed with ethanol. The solvent was removed under reduced pressure, and the obtained residue was purified by silica gel column chromatography, to give 4-hydroxymethyl-1-propyl-1,2,3-triazole (1.9 g). To 4-hydroxymethyl-1-propyl-1,2,3-triazole (1.9 g) was added thionyl chloride (32 ml) at 0° C., and the mixture was heated to reflux for 1 hour. After allowing the mixture to be cooled to room temperature, the solvent was removed under reduced pressure, to give 4-chloromethyl-1-propyl-1,2,3-triazole (1.75 g).