| 摘要 |
A novel substituted-arylacetic acid ester of the formula, <IMAGE> (I) wherein R1 and R2 are each hydrogen or a halogen atom, a C1-C4 alkyl, C2-C4 alkenyl, C1-C4 alkoxy, cyano, nitro, methylthio, C1-C4 alkanoyl, C1-C4 alkanoyloxy, or C1-C4 alkoxycarbonyl group, or R1 and R2, taken together, may form methylenedioxy, a C3-C5 alkylene or butadienylene (-CH=CH-CH=CH-) ring; R3 is a C2-C4 alkyl, C2-C4 alkenyl, propargyl, C3-C6 cycloalkyl or cyclopropylmethyl group; R4 is hydrogen or a halogen atom, methyl or ethyl group; R5 is allyl, propargyl, 3-butenyl, 3-butynyl, phenyl or benzyl group; and A is oxygen or sulfur atom or -CH=CH- group, which possesses various useful insecticidal and acaricidal activities and can be prepared by reacting a substituted-arylacetic acid of the formula; <IMAGE> wherein R1, R2, R3 and A are each as defined above, or a reactive derivative thereof with an alcohol, or halide or sulfonate thereof of the formula, <IMAGE> wherein R4 and R5 are each as defined above and X is hydroxy group, a halogen atom, alkylsulfonyloxy or arylsulfonyloxy group. |
