| abstract |
Use of isoxazolines of the general formula II <IMAGE> in which R<1>, R<2>, R<3> and R<4> denote at least one alkyl, aryl, aralkyl, alkoxycarbonyl or dialkoxyphosphonyl, each of which is unsubstituted or substituted by halogen, haloalkyl, alkoxy, haloalkoxy, nitro, cyano, dialkylphosphonyl or alkoxycarbonyl, or hydrogen, and R<3> also denotes hydroxyalkyl, haloalkyl or hydroxyalkyl which is capped by a detachable protective group, and X denotes hydrogen or a detachable protective group, for the preparation of furans by hydrogenation. |