1,1,1-Trichloroethane → 4-Chlorophenyl-2-[2-(1,2,4-triazol-1-yl)-prop-2-yl]-oxirane

Beteiligte Stoffe

Reaktionsschritte

A mixture of 4'-chloro-2-methyl-2-(1H-1,2,4-triazol-1-yl)propiophenone (1.375 g), trimethyl sulphoxonium iodide (1.6 g), aqueous sodium hydroxide (5N; 13.5 ml.), cetrimide (80 mg.) and 1,1,1-trichloroethane (30 ml.) was heated at 80° for 24 hours. The solution was cooled and diluted with methylene chloride (30 ml.), and the organic layer was separated and dried (MgSO4). Removal of the solvent, followed by flash chromatography of the residue on silica (100 g.) using ethyl acetate/hexane/diethylamine (40:60:3 v/v/v) for elution, gave, after collection of appropriate fractions and evaporation, the title oxirane as an oil in 79% yield, 1.15 g.

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