Abstract: A process for the production of a phosphoro chloride thiolate of the formula ##STR1## wherein R.sup.1 is alkyl, alkoxyalkyl, aryl, or aryl substituted by alkyl, alkoxy or halogen, andR.sup.2 is alkyl,comprising reacting a mixture of a dialkyl chlorophosphite of the formula(R.sup.2 O).sub.2 PCland an alkyl dichloro-phosphite of the formula(R.sup.2 O)PCl.sub.2with a sulphenyl chloride of the formulaR.sup.1 SClto produce a mixture of a phosphorochloridothiolate of the formula ##STR2## and a phosphorodichloridothiolate of the formula ##STR3## and reacting the mixture without isolation with an alcohol of the formulaR.sup.2 OHin the presence of a dehydrochlorinating agent thereby to convert the phosphorodichloridothiolate of the formula ##STR4## to additional phosphorochloridothiolate ##STR5## The starting mixture is produced by reacting phosphorus trichloride with a trialkyl phosphite, or with an alcohol in the presence of a dehydrochlorinating agent.

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: Combating insects, acarids and nematodes with O-ethyl-S-n-propyl-O-(substituted phenyl)-phosphorothiolates of the general formula ##STR1## wherein X is halogen, lower alkyl, nitro, cyano, lower alkylmercapto, lower alkylsulfinyl, lower alkoxycarbonyl or lower alkyl carbonyl, andm is 1, 2 or 3.

Abstract: O-ethyl-S-n-propyl-dithiophosphoric acid phenyl or naphthyl esters, i.e. O-ethyl-S-n-propyl-O- or S-optionally substituted phenyl or naphthyl-phosphorothionothiol- or dithiolates, of the formula ##STR1## in which X is an oxygen or sulfur atom, andZ is a group of the formula ##STR2## Y is a halogen atom or a lower alkyl, lower alkoxy, lower alkylmercapto, lower alkylsufinyl, nitro, cyano or phenyl group, andm is 0, 1, 2 or 3,Which possess insecticidal, acaricidal and nematocidal properties.

Abstract: S-alkoxyethyl-phenyl-di- and -tri-thiophosphonic acid esters of the formula ##STR1## in which R.sup.1 and R.sup.2 each independently is C.sub.1 -C.sub.6 alkyl,X is oxygen or sulfur,Y is C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 alkylmercapto or halogen, andn is 1 or 2,Which possess insecticidal, acaricidal and nematocidal properties.

Abstract: O-ethyl S-n-propyl-O-(substituted phenyl)-phosphorothiolates of the general formula ##STR1## wherein X is halogen, lower alkyl, nitro, cyano, lower alkylmercapto, lower alkylsulfinyl, lower alkoxycarbonyl or lower alkyl carbonyl, andm is 1, 2 or 3, which possess insecticidal, acaricidal and nematocidal properties.

Abstract: Amidothionophosphonic acid ester compounds of the formula: ##STR1## in which R is alkyl of from 1 to 6 carbon atoms or lower cycloalkyl;Y is hydrogen, halogen or alkyl or alkoxy of from 1 to 6 carbon atoms; andZ is nitro or cyano;Are outstandingly effective as herbicides and exhibit particularly selective action.

Abstract: O-aryl-alkoxyethyl-thiolphosphoric acid ester amides of the formula ##EQU1## in which R.sup.1 is hydrogen or lower alkyl,R.sup.2 is lower alkyl, andX is a group of the formula ##SPC1##In whichm is 0, 1, 2 or 3, andEach Y independently is halogen, lower alkyl, lower alkoxy, lower alkylmercapto, lower alkoxycarbonyl, nitro or phenyl,which possess insecticidal, acaricidal and nematocidal properties.

Abstract: O-ethyl-S-n-propyl-O-(substituted phenyl)-phosphorothiolates of the general formula ##SPC1##WhereinX is halogen, lower alkyl, nitro, cyano, lower alkylmercapto, lower alkylsulfinyl, lower alkoxycarbonyl or lower alkyl carbonyl, andm is 1, 2 or 3,Which possess insecticidal, acaricidal and nematocidal properties.

Abstract: Phosphoro-amido-thioates, i.e. O-alkyl-O-[2-nitro-4-(alkyl, alkoxy and chloro)-phenyl]-N-alkyl-phosphoro-amido-thioates and O-alkyl-O-[2-nitro-4-(optionally alkyl, alkoxy and chloro)-phenyl]-N-cycloalkyl-phosphoro-amido-thioates, or O-alkyl-O-[2-nitro-4-(alkyl, alkoxy and chloro)-phenyl]-N-alkyl-amido-thionophosphates and O-alkyl-O-[2-nitro-4-(optionally alkyl, alkoxy and chloro)-phenyl]-N-cycloalkyl-amido-thionophosphates, which possess herbicidal properties and which may be produced by conventional methods.

Abstract: O-ethyl-S-n-propyl-dithiophosphoric acid phenyl or naphthyl esters, i.e. O-ethyl-S-n-propyl-O- or S- optionally substituted phenyl or naphthyl-phosphorothionothiol-- or dithiolates, of the formula ##EQU1## in which X is an oxygen or sulfur atom, andZ is a group of the formula ##SPC1##Y is a halogen atom or a lower alkyl, lower alkoxy, lower alkylmercapto, lower alkylsulfinyl, nitro, cyano or phenyl group, andm is 0, 1, 2 or 3, which possess insecticidal, acaricidal and nematocidal properties.

Abstract: O-ethyl-S-n-propyl-S-optionally substituted-benzyl-phosphoro(thiono)dithiolates of the formula ##EQU1## in which X stands for an oxygen or sulfur atom,Y stands for a halogen atom or a lower alkyl, lower alkoxy, lower alkylmercapto, lower alkylsulfinyl, nitro or cyano group, andm is 0, 1, 2 or 3,Which possess insecticidal, acaricidal and nematocidal properties.