VERFAHREN ZUR HERSTELLUNG VON OXIRANEN

1. Process for the preparation of oxiranes of the formula see diagramm : EP0219799,P8,F1 in which X represents 4-chlorobenzyl, 4-phenylphenoxy or 1H-(1,2,4)-triazolyl, characterized in that dimethyl sulphate is treated with an excess of dimethyl sulphide and the trimethylsulphonium methylsulphate th...

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Bibliographic Details
Main Authors REISER,WOLF,DR, FEYEN,PETER,DR
Format Patent
LanguageGerman
Published 30.04.1987
Edition4
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:1. Process for the preparation of oxiranes of the formula see diagramm : EP0219799,P8,F1 in which X represents 4-chlorobenzyl, 4-phenylphenoxy or 1H-(1,2,4)-triazolyl, characterized in that dimethyl sulphate is treated with an excess of dimethyl sulphide and the trimethylsulphonium methylsulphate thereby formed, of the formula (CH3 )3 S(anion) CH3 SO4 (cation) is reacted, without prior isolation, with a ketone of the formula see diagramm : EP0219799,P8,F2 in which X has the abovementioned meaning in the presence of solid potassium hydroxide or sodium hydroxide in dimethyl sulphide, optionally in the presence of a polar, aprotic diluent, at temperatures between 0 degrees C and 50 degrees C.
Bibliography:Application Number: DE19853537817