Abstract: A process for the preparation of a compound of the formula ##STR1## where Z and R are defined herein. A compound of formula II ##STR2## where R.sub.1 defined herein, is reacted with hydrazine hydrate and then subjected to hydrolysis to form the compound of formula I ##STR3## and the compound of the formula I is reacted with the aldehyde of the formula ##STR4## into the resulting compound of the formula IV.

Abstract: The invention relates to a process for the preparation of a compound of formula ##STR1## useful as intermediate for the preparation of pesticides, wherein R is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 cycloalkyl, C.sub.1 -C.sub.4 alkyl substituted by from 1 to 10 halogen atoms or by from 1 to 3 radicals selected from the group consisting of C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 alkylthio and phenyl, phenyl or phenyl substituted by from 1 to 3 radicals selected from the group consisting of halogen, methyl, ethyl, methoxy, methylthio and nitro, which comprises reacting with hydrazine hydrate a compound of formula ##STR2## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.6 cycloalkyl, C.sub.1 -C.sub.4 alkyl substituted by from 1 to 9 chlorine atoms, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 alkylthio, C.sub.1 -C.sub.3 alkylsulfinyl, C.sub.1 -C.sub.

Abstract: The invention relates to a process for the preparation of a compound of formula ##STR1## useful as intermediate for the preparation of pesticides, wherein R is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 cycloalkyl, C.sub.1 -C.sub.4 alkyl substituted by from 1 to 10 halogen atoms or by from 1 to 3 radicals selected from the group consisting of C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 alkylthio and phenyl, phenyl or phenyl substituted by from 1 to 3 radicals selected from the group consisting of halogen, methyl, ethyl, methoxy, methylthio and nitro, which comprises reacting with hydrazine hydrate a compound of formula ##STR2## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.6 cycloalkyl, C.sub.1 -C.sub.4 alkyl substituted by from 1 to 9 chlorine atoms, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 alkylthio, C.sub.1 -C.sub.3 alkylsulfonyl, C.sub.1 -C.sub.

Abstract: The invention relates to a process for the preparation of a compound of formula ##STR1## useful as intermediate for the preparation of pesticides, wherein R is hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.3 -C.sub.6 cycloalkyl, C.sub.1 -C.sub.4 alkyl substituted by from 1 to 10 halogen atoms or by from 1 to 3 radicals selected from the group consisting of C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 alkylthio and phenyl, phenyl or phenyl substituted by from 1 to 3 radicals selected from the group consisting of halogen, methyl, ethyl, methoxy, methylthio and nitro, which comprises reacting with hydrazine hydrate a compound of formula ##STR2## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.3 -C.sub.6 cycloalkyl, C.sub.1 -C.sub.4 alkyl substituted by from 1 to 9 chlorine atoms, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 alkylthio, C.sub.1 -C.sub.3 alkylsulfinyl, C.sub.1 -C.sub.

Abstract: Mercapto-bis-[1,3,4-oxa- and -thiadiazoles] ##STR1## in which X.sub.1 and X.sub.2 independently of one another are oxygen or sulfur, R.sub.1 is hydrogen or C.sub.1 -C.sub.5 alkyl which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.3 alkoxy or cyano; C.sub.3 -C.sub.7 alkenyl which is unsubstituted or substituted by halogen; or C.sub.3 -C.sub.7 alkynyl which is unsubstituted or substituted by halogen,R.sup.2 is hydrogen, C.sub.1 -C.sub.5 alkyl, C.sub.1 -C.sub.3 alkoxy which is unsubstituted or substituted by halogen, C.sub.1 -C.sub.3 alkylthio which is unsubstituted or substituted by halogen, C.sub.3 -C.sub.7 alkenylthio which is unsubstituted or substituted by halogen, C.sub.3 -C.sub.7 alkylnylthio which is unsubstituted or substituted by halogen, --SH, phenyl which is unsubstituted or substituted by halogen or ##STR2## in which R.sub.3 and R.sub.4 are C.sub.1 -C.sub.3 alkyl, and processes for the preparation of the compounds of the formula I are described.

Abstract: 2-Mercapto-1,3,4-oxadiazoles and 2-mercapto-1,3,4-thiadiazoles of the formula I ##STR1## in which X.sub.1 and X.sub.2 independently of one another are oxygen or sulfur, R.sub.1 is difluoromethyl or 3,4,4-trifluoro-3-butenyl, R.sub.2 is hydrogen or C.sub.1 -C.sub.3 alkyl and R.sub.3 is hydrogen, C.sub.1 -C.sub.5 alkyl which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy, C.sub.3 -C.sub.7 alkenyl which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy, C.sub.3 -C.sub.7 alkynyl which is unsubstituted or substituted by halogen or C.sub.1 -C.sub.3 alkoxy, or phenyl which is unsubstituted or substituted by halogen, NO.sub.2, CF.sub.3, C.sub.1 -C.sub.3 -alkyl or C.sub.1 -C.sub.3 alkoxy, or wherein, furthermore, R.sub.2 and R.sub.3 together can form the methylene chain (--CH.sub.2 --)n as a constituent of a 5- or 6-membered ring with the heteroatom X.sub.1, in which n is 3 or 4, and processes for the preparation of the compounds of the formula I are described.

Abstract: Novel compounds of the formula ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.12 alkyl that is unsubstituted or substituted by halogen, phenyl, C.sub.1 -C.sub.3 alkoxy or by hydroxy, C.sub.1 -C.sub.3 alkyl that is substituted by carbonyl, O-alkylcarboxy, amino or by a heterocycle, unsubstituted or halo-substituted C.sub.3 -C.sub.7 cycloalkyl or unsubstituted cyclopropylmethyl, unsubstituted or halo-substituted C.sub.3 -C.sub.7 alkenyl, unsubstituted or halo-substituted C.sub.3 -C.sub.7 alkynyl, benzyl that is unsubstituted or mono-, di-or tri-substituted in the nucleus by C.sub.1 -C.sub.4 alkyl, halogen, nitro, cyano or by trifluoromethyl, or is the radical R.sub.2 --(O--CH.sub.2 --CH.sub.2 --)n wherein R.sub.2 is hydrogen or C.sub.1 -C.sub.4 alkyl and n is a number from 1 to 3, as active ingredients for controlling nematodes that parasitise plants and for preventing damage to cultivated plants caused by nematode attack.

Abstract: The invention relates to 2-mercapto-5-pyridyl-1,3,4-oxadiazoles and 2-mercapto-5-pyridyl-1,3,4-thiadiazoles of the formula I ##STR1## wherein X is oxygen or sulfur,R' is C.sub.1 -C.sub.3 alkyl which is substituted by bromine, fluorine, C.sub.1 -C.sub.3 alkoxy or cyano; unsubstituted or halogen-substituted C.sub.3 -C.sub.7 alkenyl; unsubstituted or halogen-substituted C.sub.4 -C.sub.7 alkynyl,R is C.sub.1 -C.sub.3 alkyl, unsubstituted C.sub.1 -C.sub.3 alkoxy or C.sub.1 -C.sub.3 alkoxy which is substituted by halogen or C.sub.1 -C.sub.3 alkoxy; unsubstituted or halogen-substituted C.sub.3 -C.sub.7 alkenyl; C.sub.3 -C.sub.7 alkynyl, C.sub.1 -C.sub.3 alkylthio, halogen, cyano, hydroxy, amino or amino which is substituted by one or two C.sub.1 -C.sub.3 alkyl groups; or is aminocarbonyl; andn is 0, 1, 2, 3 or 4,to the preparation of the compounds of formula I and to novel intermediates for the synthesis of these compounds. The compounds of formula I have nematicidal properties.

Abstract: 2-Mercapto-5-pyrazinyl-1,3,4-oxadiazoles and 2-mercapto-5-pyrazinyl-1,3,4-thiadiazoles of formula I ##STR1## wherein X is oxygen or sulfur,R' is C.sub.1 -C.sub.5 alkyl, unsubstituted or substituted by halogen, C.sub.1 -C.sub.3 alkoxy or cyano; unsubstituted or halogen-substituted C.sub.3 -C.sub.7 alkenyl; unsubstituted or halogen-substituted C.sub.3 -C.sub.7 alkynyl,R is C.sub.1 -C.sub.3 alkyl, unsubstituted C.sub.1 -C.sub.3 alkoxy or C.sub.1 -C.sub.3 alkoxy which is substituted by halogen or C.sub.1 -C.sub.3 alkoxy; halogen, cyano, hydroxy, amino or amino which is substituted by one or two C.sub.1 -C.sub.3 alkyl groups; or is aminocarbonyl; andn is 0, 1, 2 or 3, the preparation thereof and novel intermediates for their synthesis are disclosed.The compounds of formula I have nematicidal properties. Nematicidal compositions which contain at least one compound of formula I as active ingredient, methods of using said compounds and of the compositions containing them for controlling nematodes are also disclosed.

Abstract: Novel compounds of the formula ##STR1## in which R' represents C.sub.1 -C.sub.5 -alkyl, halogen, trifluoromethyl or C.sub.1 -C.sub.3 -alkoxy;R" represents C.sub.1 -C.sub.5 -alkyl or halogen; andR"' represents C.sub.1 -C.sub.5 -alkyl that is unsubstituted or is substituted by from 1 to 6 halogen atoms, C.sub.1 -C.sub.5 -alkenyl that is unsubstituted or is substituted by from 1 to 6 halogen atoms, or C.sub.1 -C.sub.5 - alkynyl that is unsubstituted or is substituted by from 1 to 6 halogen atoms;m represents 0, 1, 2 or 3 andn represents 0 or 1; andX.sub.1 and X.sub.2 each represents, independently of the other, oxygen or sulphur,as active ingredients for controlling plant parasite nematodes and for preventing damage to cultivated plants caused by nematode attack.

Abstract: The invention relates to a composition for protecting keratinous material, in particular woollen textiles, from attack by pests that feed on keratin, in particular moth and beetle larvae, which composition contains, as active ingredient combination, a specifically substituted 5-(pyridyloxyphenylcarbamoyl)barbituric acid or a salt thereof and a synthetic pyrethroid, as well as to a process comprising the use of this active ingredient combination for providing said material with a protective finish against attack by pests that feed on keratin.

Abstract: Oxime phosphates of the formula ##STR1## wherein R.sub.1 is C.sub.1 -C.sub.6 -alkyl,R.sub.2 is C.sub.1 -C.sub.7 -alkoxy or C.sub.1 -C.sub.6 -alkylthio,R.sub.3 is hydrogen, C.sub.1 -C.sub.6 -alkyl or cyano,A.sub.1, A.sub.2, A.sub.3 and A.sub.4 are each hydrogen or halogen,A.sub.5 is hydrogen, halogen, trifluoromethyl or C.sub.1 -C.sub.6 -alkyl, andX is oxygen or sulfur,a process for producing them, and their use for combating pests.

Abstract: The invention relates to O,S-dialkyl-O-phenyl-thiophosphates and dithiophosphates of the formula ##STR1## wherein R.sub.1 represents methyl or ethyl,R.sub.2 represents n-propyl, i-butyl or sec.-butyl,R.sub.3 and R.sub.4 each represents hydrogen, chlorine, bromine, methyl or ethyl,R.sub.5 represents a group of the formula ##STR2## X represents oxygen or sulfur, which compounds possess useful pesticidal, in particular acaricidal and insecticidal properties.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is Methyl or ethyl, R.sub.2 is C.sub.1 -C.sub.4 -alkyl or allyl, R.sub.4 is halogen, methyl or trifluoromethyl and R.sub.5 is hydrogen, halogen, methyl or trifluoromethyl and their tautomers exhibit valuable insecticidal properties.

Abstract: Carbimidocarbonylphenylformamidines of the formula ##STR1## wherein each of R.sub.1 to R.sub.6 represents hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, trifluoromethyl or cyano, a process for their production and their use in pest control.

Abstract: 1,3,5-Triazapenta-1,4-dienes of the formula ##STR1## wherein each of R.sub.1, R.sub.2 and R.sub.3 represents hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, trifluoromethyl or cyano, and R.sub.4 represents C.sub.1 -C.sub.4 alkyl which is unsubstituted or substituted by halogen, a process for their manufacture and their use in pest control.

Abstract: 1,3,5-Triazapenta-1,4-dienes of the formula ##STR1## wherein each of R.sub.1 to R.sub.6 represents hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, trifluoromethyl or cyano, a process for their manufacture and their use in pest control.

Abstract: Compounds of the formula I ##STR1## wherein R.sub.1 represents a phenyl group substituted by one or two members selected from the group consisting of halogen, alkyl having at most 3 carbon atoms, trifluoromethyl, nitro and cyano; and either(i) R.sub.2 represents an alkyl group having at most 5 carbon atoms andR.sub.3 represents a methyl group or(ii) R.sub.2 and R.sub.3 together represent a tetramethylene or pentamethylene group;With the proviso that, when R.sub.2 and R.sub.3 both represent methyl groups or when R.sub.2 and R.sub.3 together represent a tetramethylene or pentamethylene group, R.sub.1 may not represent a 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl or 4-fluorophenyl group, possess valuable insecticidal properties.

Abstract: The compound of the formula I ##STR1## exhibits valuable insecticidal properties and is in particular useful for combating pests of the species Heliothis virescens in cotton cultures.

Abstract: The invention provides a method for controlling insect pests at a locus which comprises applying to said locus a compound of the formula I ##STR1## wherein R.sub.1 and R.sub.2 both represent a methyl group or together represent a tetramethylene or pentamethylene group and R.sub.3 represents a phenyl, 3-chlorophenyl, 4-chlorophenyl, 3,4-dichlorophenyl or 4-fluorophenyl group.