Patent ID: 6417388
Filing Date: 2002-07-09
Classification: C07C

Abstract:
A process for preparing alkenyl-substituted bis(oxime ether) derivatives of the formula I, where:R1 is unsubstituted C1-C4-alkyl or C2-C4-alkenyl-, C2-C4-alkynyl- or phenyl-substituted methyl; R2,R4 independently of one another are hydrogen or methyl; R3,R5 independently of one another are hydrogen or C1-C4-alkyl, trifluoromethyl or phenyl and X is â€”C(&boxH;CHCH3)â€”COOCH3, â€”C(&boxH;CHOCH3)â€”COOCH3, â€”C(&boxH;NOCH3)â€”COOCH3, â€”C(&boxH;NOCH3)â€”CONHCH3 or â€”N(OCH3)â€”COOCH3, which comprises rearranging an alkenylalkyl derivative of the formula II, in which the substituents R1 to R5 and X are as defined above, using a base and/or an isomerization catalyst.