| 摘要 |
A phenoxyalkene derivative having the formula <IMAGE> (III) wherein R represents a hydrogen atom, <IMAGE> and Y and Z are the same or different and respectively represent a hydrogen atom, trifluoromethyl group, a halogen atom, a lower alkyl group, nitro group or cyano group; R1 represents a hydrogen atom or a lower alkyl group and R2 represents carboxyl, hydroxymethyl, allyloxycarbonyl, a lower alkoxycarbonyl, a lower haloalkoxycarbonyl, a S-lower alkylthiocarbonyl, carbamoyl, a N-lower alkylcarbamoyl or a N-phenylcarbamoyl group is produced by reacting a phenol compound having the formula <IMAGE> (I) with a dihalogen compound having the formula <IMAGE> wherein R, R1 and R2 are defined above and X1 represents a halogen atom and X2 and X3 are different and respectively represent a hydrogen atom or a halogen atom, by a simultaneous reaction of an etherification and an unsaturated double bond formation, in the presence of a dehydrogenhalide agent and a polar solvent or a combination of a nonpolar solvent and a quaternary ammonium salt or a quaternary phosphonium salt.
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