The reaction of keto-stabilized sulphonium and arsonium ylides with α-chlorooximes
作者:P. Bravo、G. Gaudiano、P.P. Ponti、C. Ticozzi
DOI:10.1016/s0040-4020(01)93832-3
日期:1972.1
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