Add time:08/18/2019         Source:sciencedirect.com

The reaction of α-chlorooximes or the isomeric nitrosochlorides with keto-stabilized dimethylsulphonium or triphenylarsonium ylides affords trans-5-acyl-Δ2-isoxazolines (VIIa-m) in good yields. The NOCI adducts of ethylpropenyl ether and ethylstyryl ether on reaction with dimethylsulphonium phenacylide lead directly to the corresponding 3-substituted-5-benzoylisoxazo]es. Dimethylsulphonium carbethoxymethylide on reaction with 2-chloro-2-phenylacetone oxime affords the oxime of β-acetylcinnamic acid ethyl ester, while on reaction with 2-chlorocyclooctanone oxime leads to the thioether IXd.

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