Abstract: A dithiolphosphoric acid ester of the formula, ##STR1## wherein R is methyl or ethyl group, and when R is methyl group, A is iso-butyl, sec-butyl or tert-butyl group and B is methyl, ethyl or n-propyl group, when R is ethyl group and A is sec-butyl or tert-butyl group, B is methyl group, and when R is ethyl group and A is iso-butyl group, B is methyl, ethyl or n-propyl group, which is useful as a soil pesticidal composition for pests in soil.

Abstract: A soil disinfectant composition for preventing and controlling diseases caused by pathogenic fungi living in soil, which comprises an effective amount of at least one of phenylphosphinic acid and its salts as an active ingredient, and at least one inert carrier or diluent.

Abstract: A fungicidal composition which comprises as an active ingredient a fungicidally effective amount of a compound of the formula: ##STR1## wherein X is a hydroxyl group or a hydroxyamino group, or its salt and an inert carrier or diluent.

Abstract: A soil disinfectant composition for preventing and controlling diseases caused by pathogenic fungi living in soil, which comprises an effective amount of at least one of phenylphosphinic acid and its salts as an active ingredient, and at least one inert carrier or diluent.

Abstract: Phosphoro-thioates or dithioates of the formula (I), ##STR1## wherein R is a C.sub.1 -C.sub.3 alkyl group, R.sub.1 is a C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.4 alkylamino or allylamino group, R.sub.2 is a halogen atom, a C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.3 alkyl group, R.sub.3 is a hydrogen or halogen atom or a C.sub.1 -C.sub.3 alkyl group, R.sub.4 is a C.sub.1 -C.sub.3 alkyl group, and X is an oxygen or sulfur atom, provided that when R.sub.1 is a C.sub.1 -C.sub.4 alkylamino or allylamino group, X is an oxygen atom, a process for producing phosphoro-thioates or dithioates of the formula (I) characterized by condensing a pyrimidine of the formula (II), ##STR2## wherein Y is a halogen atom, and R.sub.2, R.sub.3 and R.sub.4 are as defined above, with a thio- or dithio-phosphate of the formula, ##STR3## wherein M is an alkali metal atom or an ammonium group, and R, R.sub.

Abstract: Organophosphorus esters of the formula (I), ##STR1## wherein R is a C.sub.1 -C.sub.2 alkyl group, R.sub.1 is a C.sub.1 -C.sub.2 alkyl, C.sub.1 -C.sub.2 alkoxy, C.sub.1 -C.sub.4 alkylamino, phenyl or phenoxy group, R.sub.2 and R.sub.3, which may be the same or different, are each a C.sub.1 -C.sub.5 alkyl or methoxy C.sub.2 -C.sub.3 alkyl group and X is an oxygen or sulfur atom, a method for producing organophosphorus esters of the formula (I) characterized by condensation reaction of s-triazines of the formula, ##STR2## wherein M is a potassium or sodium atom and R.sub.2 and R.sub.3 are as defined above, with a halogenated compound of the formula, ##STR3## wherein Y is a halogen atom and R, R.sub.1 and X are as defined above, and an insecticide, acaricide and/or nematocide characterized by containing organophosphorus esters of the formula (I) as an active ingredient.

Abstract: Pyrimidin-4-yl-phosphorothionates of the formula (I), ##STR1## wherein R is a C.sub.1 -C.sub.2 alkyl group, R.sub.1 is a C.sub.1 -C.sub.2 alkoxyl or C.sub.1 -C.sub.4 alkylamino group, R.sub.2 and R.sub.3, which may be the same or different, are each a halogen atom, a C.sub.1 -C.sub.3 alkoxyl or methylmercapto group, and X is an oxygen or sulfur atom; a process for producing pyrimidin-4-yl-phosphorothionates of the formula (I) characterized by condensing a 4-hydroxypyrimidine of the formula (II), ##STR2## wherein R.sub.2 and R.sub.3, which may be the same or different, are each a halogen atom, a C.sub.1 -C.sub.3 alkoxyl or methylmercapto group, with a halogen compound of the formula, ##STR3## wherein R is a C.sub.1 -C.sub.2 alkyl, R.sub.1 is a C.sub.1 -C.sub.2 alkoxyl or C.sub.1 -C.sub.

Abstract: Nematocidal O-ethyl S-alkyl S-isopropyl phosphorodithiolates.

Abstract: Pesticidal compositions containing, as active ingredient, a compound of the formula ##STR1## wherein R.sub.1 is lower alkyl, lower alkenyl, lower alkynyl or a radical of the formula ##STR2## IN WHICH X is lower alkyl, halogen or hydrogen and n is zero or an integer of 1 to 5,R.sub.2 is lower alkyl, lower alkenyl or lower alkynyl,R.sub.3 is a radical of the formula ##STR3## or a radical of the formula ##STR4## and Y is oxygen or sulfur.

Abstract: Phosphorothiolates represented by the formula, ##STR1## wherein R is an alkyl; A is an alkyl, haloalkyl, alkenyl, alkinyl, alkylthioalkyl, phenylthioalkyl, phthalimidoalkyl or phenylalkyl; X is hydrogen, a halogen or an alkyl; and n is an integer of 1 to 5, are obtained by (1) reacting sodium or potassium hydrosulfide with a compound represented by the formula, ##STR2## WHEREIN R, X and n have the same significances as mentioned above, to prepare a thiophosphate represented by the formula, ##STR3## wherein R, X and n have the same significances as mentioned above; and M is an alkali metal, and then (2) reacting said thiophosphate with a halide represented by the formula,Y -- Awherein A has the same significance as mentioned above; and Y is a halogen.The phosphorothiolates have insecticidal and fungicidal activities.

Abstract: The present invention relates to new herbicidal phosphorothioate (phosphorodithioate) derivatives and to preparation thereof.

Abstract: Process for preparing 5-methyl-2-nitrophenol of high purity by sulfonating tri-m-cresyl phosphate, nitrating the sulfonated tri-m-cresyl phosphate, hydrolyzing the nitrated, sulfonated tri-m-cresyl phosphate to obtain a mixture of nitro-m-cresols, steam-distilling the mixture, and repeatedly washing the distillate with a dilute aqueous alkaline solution.

Abstract: Phosphorothiolates represented by the formula, ##STR1## wherein R is an alkyl; A is an alkyl, haloalkyl, alkenyl, alkinyl, alkylthioalkyl, phenylthioalkyl, phthalimidoalkyl or phenylalkyl; X is hydrogen, a halogen or an alkyl; and n is an integer of 1 to 5, are obtained by (1) reacting sodium or potassium hydrosulfide with a compound represented by the formula, ##STR2## WHEREIN R, X, and n have the same significances as mentioned above, to prepare a thiophosphate represented by the formula, ##STR3## wherein R, X and n have the same significances as mentioned above; and M is an alkali metal, and then (2) reacting said thiophosphate with a halide represented by the formula,Y--Awherein A has the same significance as mentioned above; and Y is a halogen.The phosphorothiolates have insecticidal and fungicidal activities.

Abstract: Compounds of the formula ##STR1## WHERE R.sub.1 is lower alkenyl, optionally substituted by chlorine or bromine, or R.sub.1 is alkoxyalkyl; R.sub.2 and R.sub.3 are lower alkyl; R.sub.4 is lower alkyl, lower alkoxy or halogen; and n is zero or an integer of 1-5, which are useful as herbicides, insecticides, acaricides and nematocides.

Abstract: The present invention relates to compounds of the formula: ##STR1## wherein R.sub.1 is lower alkyl, lower alkenyl, lower alkynyl, cycloalkyl, unsubstituted aralkyl, lower alkyl or halogen-substituted aralkyl or halogen-substituted alkenyl; R.sub.2 is lower alkyl; Y is hydrogen or methyl and X is lower alkyl; n is an integer of 1 to 5, and a method of producing these compounds. These compounds are eminently suited for killing weeds, injurious insects, nematodes and acaricides.

Abstract: Amidophosphorothiolate compounds, for example N-(O-methyl-S-n-propyldithiolphosphorylacetyl)-tetrahydroquinoline, are provided which have herbicidal activity.

Abstract: A process for preparing 5-methyl-2-nitrophenol from di-m-cresyl carbonate in high yield, by a specific combination of sulfonation, nitration, hydrolysis and steam distillation, is provided.

Abstract: O-alkyl-O-(3-methyl-6-nitrophenyl)-N-secondary butyl-phosphorothionoamidate, which possesses herbicidal properties.

Abstract: A phenylenediamine compound of the formula: ##SPC1##Wherein R.sub.1 is a lower alkyl group or a phenyl group which may bear one to five substituents, R.sub.2 is a lower alkyl group, A is an alkyl group, an alkenyl group, an alkynyl group, a haloalkyl group, a phenyl group, a cyanoalkyl group, a lower alkylthioalkyl group, a haloalkenyl group, a lower alkoxyalkyl group, a lower alkoxycarbonylalkyl group, a lower alkylcarbamoylalkyl group or a phenylalkyl group which may bear one to five substituents on the benzene ring and X is an oxygen atom or a sulfur atom, which is useful as a pesticide effective in preventing and controlling simultaneously two or more kinds of plant diseases and can be produced by reacting an amidophosphoric ester of the formula: ##SPC2##Wherein R.sub.1, A and X are each as defined above with an alkoxycarbonyl isothiocyanate of the formula: ##EQU1## wherein R.sub.2 is as defined above.

Abstract: Thio(dithio)-phosphorate of the formula, ##SPC1##Wherein A represents an alkyl having up to 6 carbon atoms; B represents lower alkyl having up to 4 carbon atoms; Y represents halogen, methoxy or ethoxy; X represents oxygen or sulfur; R.sub.1 represents alkyl having up to 6 carbon atoms, phenyl, phenyl substituted by halogen or phenyl substituted by lower alkyl having up to 4 carbon atoms; R.sub.2 represents hydrogen or alkyl having up to 6 carbon atoms; R.sub.3 represents hydrogen or alkyl having up to 6 carbon atoms; and n represents 0, 1 or 2, which is useful as a pesticide.