Isoxazolines useful in preparing furans

Details Isoxazolines useful in preparing furans Isoxazolines useful in preparing furans

C - Chemistry, Metallurgy

07

D

260/311.9

C07D 261/04 (2006.01) C07C 45/56 (2006.01) C07D 307/42 (2006.01) C07D 307/68 (2006.01) C07F 7/10 (2006.01) C07F 9/40 (2006.01) C07F 9/653 (2006.01)

Patent

CA 1268465

ABSTRACT OF THE DISCLOSURE: Disclosed and claimed are new isoxazolines of the general formula II: Image (II) in which R1, R2, R3 and R4 are each unsubstituted or halogen-haloalkyl-, alkoxy-, haloalkoxy-, nitro-, cyano-, dialkyl-phosphonyl- or alkoxycarbonyl-substituted alkyl, aryl aralkyl, alkoxycarbonyl or dialkoxyphosphonyl; R2 and R4 may also be each hydrogen and R3 may also be 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 are useful as starting compounds for the preparation of furans.

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