Abstract: A propargyl ester compound of the formula (I), ##STR1## wherein R.sup.1 is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy; Z is C.sub.5 -C.sub.10 alkylene which may be substituted with C.sub.1 -C.sub.4 alkyl; and m is an integer of from 1 to 5; with the proviso that when m is an integer of 2 or more, the substituents represented by R.sup.1 may be the same or different; is incorporated into an acaricidal composition as an active ingredient, which can be used for controlling acarines.

Abstract: A novel pyridylimidazole derivative having the formula; ##STR1## wherein R.sup.1 is a halogen atom, a nitro group or a trifluoromethyl group; R.sup.2 is a C.sub.1 -C.sub.3 haloalkyl group or a C.sub.1 -C.sub.3 haloalkoxy group; R.sup.3 is a C.sub.1 -C.sub.3 alkyl group; R.sup.4 is a tert-butyl group or a C.sub.1 -C.sub.4 haloalkyl group, a process for producing the same and insecticides containing the same as an active ingredient, are disclosed.

Abstract: A novel 4-tert.-butylimidazole derivative having the formula: ##STR1## wherein R.sup.1 is a hydrogen atom, a C.sub.1 -C.sub.3 alkyl group, a C.sub.1 -C.sub.3 alkylthio group or a C.sub.2 -C.sub.3 alkoxyalkyl group; R.sup.2 is a halogen atom, a nitro group or a trifluoromethyl group; R.sup.3 is a C.sub.1 -C.sub.3 haloalkyl group, a C.sub.1 -C.sub.3 haloalkoxy group; X is a nitrogen atom or a group represented by the formula ##STR2## in which Y is a halogen atom or a nitro group, a process for producing the same and insecticides containing the same as an active ingredient, are disclosed.

Abstract: A novel 1-phenylimidazole derivative having the formula: ##STR1## wherein R is a hydrogen atom or a methyl group; X is a fluorine atom, a chlorine atom or a nitro group; Y is a fluorine atom or a chlorine atom; Z is a hydrogen atom, a fluorine atom, a chlorine atom or a bromine atom, a process for producing the same and insecticides containing the same as an active ingredient, are disclosed.

Abstract: The present invention relates to an oxadiazolinone derivative represented by the following general formula, a process for producing the same and insecticides containing the same as an active ingredient: ##STR1## wherein R.sup.1 is a haloalkyl group or a haloalkoxy group; R.sup.2 is a halogen atom, nitro group, trifluoromethyl group of 1-pyrrolyl group; R.sup.3 is a bicycloalkyl group, a methyl- or choro-substituted cycloalkyl group, an alkenyl group, a methyl-substituted cycloalkenyl group, 2-methyl-1,3-dithioran-2-yl group or an alkyl group, wherein the alkyl group may be substituted with a halogen atom, an alkoxy group, an alkylthio group, an alkylsulfinyl group, an alkylsulfonyl group or an alkoxycarbonyl group; R.sup.4 is hydrogen atom or fluorine atom; and X is CR.sup.2 or N.The oxidiazolinone derivative can be used as an insecticide by formulating it into emulsifiable concentrates, wettable powders, dusts, granules, flowable concentrates and poison baits, etc..

Abstract: A novel pyridylimidazole derivative having the formula; ##STR1## wherein R.sup.1 is a hydrogen atom, a C.sub.1 -C.sub.3 alkyl group, a C.sub.1 -C.sub.3 alkylthio group or a C.sub.2 -C.sub.3 alkoxyalkyl group; R.sup.2 is a hydrogen atom or a C.sub.1 -C.sub.4 haloalkyl group; R.sup.3 is a halogen atom, a nitro group or a trifluoromethy group; R.sup.4 is a C.sub.1 -C.sub.3 haloalkyl group or a C.sub.1 -C.sub.3 haloalkoxy group, a process for producing the same and insecticides containing the same as an active ingredient, are disclosed.

Abstract: This invention relates to novel carboxylic acid esters represented by the formula (I) below, methods for their production and insecticides and/or acaricides containing them as an active ingredient, ##STR1## wherein R.sup.1 represents a hydrogen atom, a fluorine atom or a methyl group; and R.sup.2 represents a C.sub.1-5 alkyl group, a C.sub.3-6 cycloalkyl group, a C.sub.3-6 alkenyl group, a C.sub.3-6 alkynyl group or a C.sub.1-5 haloalkyl group.