VERFAHREN ZUR STEREOSELEKTIVEN HERSTELLUNG VON Z- 1,2-DIARYL-ALLYL-CHLORIDEN UND DEREN UMSETZUNG ZU AZOLYLMETHYLOXIRANEN SOWIE NEUE ZWISCHENPRODUKTE.

摘要

Preparation of Z-1,2-diarylallyl chlorides of the general formula I in which the radicals R<1> and R<2> independently of one another are hydrogen, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy or a substituted aromatic radical, and n and m represent 1, 2 or 3, by dehydrating chlorohydrins of the formula II in which the radicals have the abovementioned meanings, at temperatures of up to 50 DEG C in the presence of a carboxylic anhydride and of an organic or inorganic acid, in an inert ether or carboxylate as the solvent, the reaction of these products to give azolylmethyloxiranes, and novel intermediates.