PROCESS OF PREPARING FURANS
    105.
    发明专利

    公开(公告)号:CA1271967A

    公开(公告)日:1990-07-24

    申请号:CA602408

    申请日:1989-06-09

    Applicant: BASF AG

    Abstract: Disclosed and claimed is a process of preparing furans by hydrogenation of isoxazolines of the general formula II: (II) in which: R1, R2, R3 and R4 are each hydrogen, unsubstituted or halogenhaloalkyl-, alkoxy-, haloalkoxy-, nitro-, cyano-, dialkyl-phos-phonyl- or allcoxycarbonyl-substituted alkyl, aryl, aralkyl, alkoxycarbonyl or dialkoxyphosphonyl, R3 is also hydroxyalkyl which is unblocked or blocked by a detachable protective group or is haloalkyl and X is hydrogen or a detachable protective group. The isoxazolines of the general formula II except those in which R1 and R3 are hydrogen are novel substances that are also claimed.

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