Abstract: Novel insecticides of the formula ##STR1## in which R is a hydrogen atom or a lower alkyl group,X is a halogen atom, a lower alkyl group, a lower alkoxy group, a lower alkylthio-group, a lower alkylsulfinyl group, a lower alkylsulfonyl group, a lower alkenyl group, a lower alkynyl group, an aryl group, an aryloxy group which may be optionally substituted by a halogen atom, an arylthio group which may be optionally substituted by a halogen atom, or an aralkyl group,l is 1, 2, 3 or 4,m is 2, 3, or 4, andn is 0, 1, 2 or 3,or salts thereof. Intermediates therefor of the formula ##STR2## are also new.

Abstract: Novel arthropodicidally active benzamides of the formula ##STR1## in which X is a halogen atom, a lower alkyl group, a lower alkoxy group or a halogen-substituted lower alkyl group,Y is a halogen atom or a lower alkyl group,n is 0, 1 or 2,Z is an oxygen or sulfur atom, andR is a halogen-substituted lower alkyl group, a halogen-substituted lower alkoxy group, a halogen-substituted lower alkylthio group, a halogen-substituted lower alkylsulfinyl group of a halogen-substituted lower alkylsulfonyl group.

Abstract: A pesticidal nitromethylene derivative of the formula ##STR1## in which R is a hydrogen atom or a lower alkyl group,m is 2, 3 or 4, andn is 0, 1, 2 or 3,is produced by reacting a compound of the formula ##STR2## in which R' each independently is a lower alkyl group, or together are an alkylene group forming a ring with the adjoining sulfur atoms.

Abstract: Pesticidally active novel nitromethylene-tetrahydropyrimidines of the formula ##STR1## wherein X represents a halogen atom.

Abstract: The invention relates to new organic phosphoric acid esters represented by the general formula ##STR1## wherein X represents O, S or NH,Y represents O or S,R.sup.1 represents a lower alkyl group,R.sup.2 represents a lower alkyl group or a lower alkoxy-lower alkyl group,R.sup.3 represents a fluoro-substituted lower alkyl group,Z represents a lower alkyl group, a lower alkoxy group or a halogen atom, andn represents 0 or 2,which can be used as pesticidally active agents.

Abstract: This invention relates to novel phosphonic acid esters represented by the following general formula (I) ##STR1## wherein R.sup.1 represents a lower alkyl group or an aryl group,R.sup.2 represents a lower alkyl group or a lower alkoxy-lower alkyl group,R.sup.3 represents a fluoro-substituted lower alkyl group,X represents an oxygen or sulfur atom,Y represents an oxygen or sulfur atom or a group of the formula ##STR2## in which R.sup.4 represents a hydrogen atom or a lower alkyl group, Z represents a hydrogen atom, a halogen atom or a lower alkyl group, andn represents 0 or 2,which can be used as insecticidal, miticidal and nematocidal agents.

Abstract: Organophosphate derivatives of the formula ##STR1## in which X is O, S or NH,Y is O or S,R.sup.1 is a lower alkyl group,R.sup.2 is a lower alkyl group or a lower alkoxy-lower alkyl group,R.sup.3 is a fluoro-substituted lower alkyl group, andn is 0 or 2.which possess pesticidal properties. The phenols of the phenyl esters are also new.

Abstract: An organophosphate of the formula ##STR1## wherein R.sup.1 is an alkyl group containing 3 to 4 carbon atoms or an alkoxyethyl group having an alkoxy moiety containing 1 to 4 carbon atoms,R.sup.2 is a hydrogen atom or a methyl group, andR.sup.3 is an alkyl group containing 1 to 4 carbon atoms or a phenyl group which may be substituted by at least one member selected from the group consisting of a halogen atom, a trifluoromethyl group, a nitro group, an alkyl group containing 1 to 4 carbon atoms, and an alkoxy group containing 1 to 4 carbon atoms,which possesses pesticidal, e.g. insecticidal, acaricidal and nematocidal, activity.

Abstract: O-Alkyl-S-alkyl-S-acyloxyethyl-phosphorodithioldates of the formula ##STR1## wherein R is an alkyl group having 1 to 6 carbon atoms,R.sup.1 is an alkyl group having 1 to 6 carbon atoms or an alkoxyethyl group having 1 to 6 carbon atoms in the alkyl part, andR.sup.2 is an alkoxy group having 1 to 6 carbon atoms, an amino group mono- or di-substituted by an alkyl group having 1 to 6 carbon atoms, an unsubstituted anilino group, or an anilino group substituted at the N-position by an alkyl group having 1 to 6 carbon atoms,which possess pesticidal, e.g. insecticidal, acaricidal and nematicidal, properties.

Abstract: O-alkyl-S-alkyl-O-haloalkyl-phosphates of the formula ##STR1## in which R.sup.1 and R.sup.2 each independently is alkyl with 1-4 carbon atoms,X is halogen, andY is halogenoalkyl with 1-4 carbon atoms,which possess arthropodicidal and nematicidal properties.

Abstract: O-Ethyl-S-n-propyl-O-2,2,2-trihaloethylphosphoro (thiono) thiolates of the formula ##STR1## wherein Y is an oxygen atom or a sulfur atom, and X is a halogen atom.

Abstract: O,S-Dialkyl-O-haloalkyl-phosphorothiolates of the formula ##STR1## in which R.sup.1 is alkyl with 1-8 carbon atoms,R.sup.2 is alkyl with 1-8 carbon atoms or alkoxyalkyl with 2-8 carbon atoms,X is hydrogen, halogenoalkyl with 1-8 carbon atoms or alkoxy with 1-8 carbon atoms, andY is halogen, which possess insecticidal, acaricidal and nematocidal properties.

Abstract: O-Alkyl-S-n-propyl-N-sulfonyl-phosphoric acid ester amides of the formula ##STR1## in which R.sup.1 is methyl or ethyl,R.sup.2 is C.sub.1 -C.sub.6 alkyl or alkenyl, C.sub.1 -C.sub.6 alkyl substituted by aryl, phenyl, C.sub.1 -C.sub.6 alkylphenyl, or halophenylR.sup.3 is C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkyl substituted by halogen, phenyl, C.sub.1 -C.sub.6 alkylphenyl, C.sub.1 -C.sub.6 alkoxyphenyl, or nitrophenyl, andX is oxygen or sulfur.Which possess insecticidal, acaricidal and nematicidal properties.

Abstract: O,S-Dialkyl-N-substituted N-sulfonyl-phosphoramidothiolates of the formula ##STR1## in which R.sup.1 is ethyl, n-butyl or sec.-butyl,R.sup.2 is alkyl with 1-6 carbon atoms, alkenyl with 2-6 carbon atoms, phenyl, or phenyl substituted with up to two substituents selected from the group consisting of halogen and akyl with 1-6 carbon atoms, andR.sup.3 is alkyl or halogen-substituted alkyl with 1-6 carbon atoms, aralkyl, phenyl or phenyl substituted with up to two substituents selected from the group consisting of halogen, alkyl with 1-6 carbon atoms and nitro,Which possess insecticidal, acaricidal and nematicidal properties.

Abstract: O-Alkyl-S-n-propyl-N-sulfonyl-phosphoric acid ester amides of the formula ##STR1## in which R.sup.1 is methyl or ethyl,R.sup.2 is C.sub.1 -C.sub.6 alkyl or alkenyl, C.sub.1 -C.sub.6 alkyl substituted by aryl, phenyl, C.sub.1 -C.sub.6 alkylphenyl, or halophenylR.sup.3 is C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkyl substituted by halogen, phenyl, C.sub.1 -C.sub.6 alkylphenyl, C.sub.1 -C.sub.6 alkoxyphenyl, halophenyl, or nitrophenyl, andX is oxygen or sulfur,Which possess insecticidal, acaricidal and nematicidal properties.

Abstract: O-Alkyl-N-sulfamyl-phosphoramidothiolates of the formula ##STR1## in which R.sup.1 is alkyl with 1-6 carbon atoms,R.sup.2 is alkyl or alkenyl with up to 6 carbon atoms,R.sup.3 is alkyl with 1-6 carbon atoms or aryl,R.sup.4 is alkyl with 1-6 carbon atoms,R.sup.5 is alkyl with 1-6 carbon atoms or aryl, andX is oxygen or sulfur,Which possess insecticidal, acaricidal, nematicidal and fungicidal properties.

Abstract: Organophosphoric acid ester anhydrides of the formula ##STR1## in which R.sup.1 is alkyl with 1-6 carbon atoms, andR.sup.2 is alkoxy, alkylthio, alkylamino or dialkylaminoWhich possess arthropodicidal and nematicidal properties.