o-Chloro-cyclohexanone oxime and its analog were synthesized with cyclohexanone,
cyclohexene and 2-methyl-2-butene. The results show that almost theoretical yield foro-Chloro-
cyclohexanone oxime is obtainable with chloro-oximation reaction from hexanone, chlorine and
hydroxylamine hydrochloride at0~5℃, and thathigh yield forα-chloro-α-methylbutanone oxime is
also securablewith the addition reaction from alkene and nitrous acid ester followed by rearranging the
resultant in ethanol solven