Piperazine → HCID 15481711, compound

Participants

Reaction Steps

A mixture of (2R,3S)-2-(2,4-difluorophenyl)-3-methyl-2-(1H-1,2,4-triazol-1-yl)methyloxirane (1.0 g, 4.0 mmol), piperazine (860 mg, 10 mmol) and lithium perchlorate (625 mg, 6 mmol) in acetonitrile (15 ml) was heated under reflux for 48 h. The solvent was removed under reduced pressure, the residue was treated with crushed ice and extracted with ethylacetate (3×30 ml). The combined organic extract was washed with water, brine, dried (Na2SO4) and concentrated to give the title compound as thick viscous gum (1.5 g, 78%). The title compound was also prepared by hydrolysis of 2R,3R-2-(2,4-difluorophenyl)-3-(4-ethoxycarbonylpiperazin-1-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol 1 with 2M sodium hydroxide solution.

Provenance & Evidence