Abstract
3-Aryl-2-benzoyloxiranes and alkyl thiocyanates in the presence of an equivalent amount of anhydrous AlCl3 form erythro-N-(2-benzoyl-l-aryl-2-chloroethyl)-S-alkyl thiocarbamates and α-diketones. p-Toly1- and p-anisy1-2-benzoy1-oxiranes do not react with alkyl thiocyanates, but isomerize to the respective α-diketones, and form the threo-chlorohydrins in low yield.
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