Back to results
US 4,053,625 AGranted
Insecticides
AssigneeSumitomo Chemical Company, Limited
InventorsIsao Ono, Yoshitoshi Okuno, Toshio Nishioka, Nobushige Itaya
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeSumitomo Chemical Company, Limited
InventorsIsao Ono, Yoshitoshi Okuno, Toshio Nishioka, Nobushige Itaya
Estimating the term…
A cyclopropanecarboxylic acid ester of the formula (I), ##STR1## wherein R.sub.1 is a hydrogen atom, methyl group or a fluorine, chlorine or bromine atom, R.sub.2 is a fluorine, chlorine or bromine atom, and each of R.sub.3 and R.sub.4 is independently a hydrogen atom, a C.sub.1 -C.sub.3 alkyl, C.sub.2 -C.sub.3 alkenyl or C.sub.2 -C.sub.3 alkynyl group, an alkyl- or halogen-substituted aryl, unsubstituted aryl group or an aralkyl group, which possesses various useful insecticidal and acaricidal activities and can be prepared by reacting an alcohol, halide or arylsulfonate compound of the formula (II), ##STR2## wherein R.sub.3 and R.sub.4 have the same meanings as defined above and A is a hydroxyl group, a halogen atom or an arylsulfoxy group, with a cyclopropanecarboxylic acid of the formula (III), ##STR3## wherein R.sub.1 and R.sub.2 have the same meanings as defined above, or its reactive derivative.
A cyclopropanecarboxylic acid ester of the formula (I), ##STR29## wherein R.sub.1 is a hydrogen atom, methyl group or a fluorine, chlorine or bromine atom, R.sub.2 is a fluorine, chlorine or bromine atom, and each of R.sub.3 and R.sub.4 is independently a hydrogen atom, a C.sub.1 -C.sub.3 alkyl, C.sub.2 -C.sub.3 alkenyl or C.sub.2 -C.sub.3 alkynyl group, an alkyl- or halogen-substituted C.sub.6 -C.sub.8 aryl, unsubstituted C.sub.6 -C.sub.8 aryl group or a C.sub.7 -C.sub.9 aralkyl group.
2,3-Dimethylmaleimidomethyl 2', 2'-dimethyl-3'-(2,2-dichlorovinyl)-cyclopropanecarboxylate.
2-Methyl-3-ethylmaleimidomethyl 2', 2'-dimethyl-3'-(2,2-dichlorovinyl)-cyclopropanecarboxylate.
2,3-Diethylmaleimidomethyl 2', 2'-dimethyl-3'-(2,2-difluorovinyl)-cyclopropanecarboxylate.
2,3-Dimethylmaleimidomethyl 2', 2'-dimethyl-3'-(2,2-dibromovinyl)-cyclopropanecarboxylate.
2-Methyl-3-isopropylmaleimidomethyl 2', 2'-dimethyl-3'-(2-chlorovinyl)-cyclopropanecarboxylate.
An insecticidal composition comprising an inert carrier and as the active ingredient an insectidally effective amount of a cyclopropanecarboxylic acid ester of the formula (I), ##STR30## wherein R.sub.1 is a hydrogen atom, methyl group or a fluorine, chlorine or bromine atom, R.sub.2 is a fluorine, chlorine or bromine atom, and each of R.sub.3 and R.sub.4 is independently a hydrogen atom, a C.sub.1 -C.sub.3 alkyl, C.sub.2 -C.sub.3 alkenyl or C.sub.2 -C.sub.3 alkynyl group, an alkyl- or halogen-substituted C.sub.6 -C.sub.8 aryl or unsubstituted C.sub.6 -C.sub.8 aryl group or a C.sub.7 -C.sub.9 aralkyl group.
Dependencies are inferred from the claim text.