Abstract: There are provided new 2-(2,2-difluorocyclopropyl)alkyl esters of general formula I ##STR1## in which Y, R.sub.1-7 and n have the meanings given in the description and processes for their preparation. The new compounds can be used to combat insects and mites.

Abstract: There are provided new alkane and alkoxyalkane derivatives of the general formula I ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4 and A have the meanings given in the description, processes for their preparation and insecticidal and acaricidal compositions containing these compounds.

Abstract: The invention relates to new aromatic alkane derivatives of the general formula ##STR1## in which R.sub.1 is aryl or aryl substituted by C.sub.1-4 alkyl, halo-C.sub.1-4 alkyl, phenyl-C.sub.1-4 alkyl, C.sub.2-4 alkenyl, halo-C.sub.2-4 alkenyl, phenyl-C.sub.2-4 alkenyl, C.sub.2-4 alkynyl, halo-C.sub.2-4 alkynyl, phenyl-C.sub.2-4 alkynyl, C.sub.1-4 alkoxy, halo-C.sub.1-4 alkoxy, phenyl-C.sub.1-4 alkoxy, C.sub.2-4 alkenyloxy, halo-C.sub.2-4 alkenyloxy, phenyl-C.sub.2-4 alkenyloxy, C.sub.2-4 alkynyloxy, halo-C.sub.2-4 alkynyloxy, phenyl-C.sub.2-4 alkynyloxy, alkylsulphonyloxy, haloalkylsulphonyloxy, arylsulphonyloxy, halo, cyano, nitro, aryloxy, haloaryloxy, C.sub.1-4 alkyl-aryloxy, or nitroaryloxy,R.sub.2 is hydrogen or C.sub.1-4 alkyl,R.sub.3 is hydrogen, cyano or ethynyl,R.sub.4 is phenyl or pyridyl or these groups substituted by one or more of C.sub.1-6 alkyl, halo-C.sub.1-6 alkyl, phenyl-C.sub.1-6 alkyl, C.sub.1-6 alkyl interrupted by an O-, N- or S- atom, C.sub.2-4 alkenyl, halo-C.sub.2-4 alkenyl, phenyl-C.

Abstract: Novel 7-(Aryloxy)-2-naphthoxyalkanecarboxylic acid derivatives of the formula I ##STR1## in racemic or separated isomeric form, have herbicidal activity.

Abstract: New substituted benzyl-type ethers of formula I ##STR1## in which R.sub.1 is aryl or aryl substituted by C.sub.1-4 -alkyl, halo-C.sub.1-4 -alkyl, phenyl-C.sub.1-4 -alkyl, C.sub.2-4 -alkenyl, halo-C.sub.2-4 -alkenyl, phenyl-C.sub.2-4 -alkenyl, C.sub.2-4 -alkynyl, halo-C.sub.2-4 -alkynyl, phenyl-C.sub.2-4 -alkynyl, C.sub.1-4 -alkoxy, halo-C.sub.1-4 -alkoxy, phenyl-C.sub.1-4 -alkoxy, C.sub.2-4 -alkenyloxy, halo-C.sub.2-4 -alkenyloxy, phenyl-C.sub.2-4 -alkenyloxy, C.sub.2-4 -alkynyloxy, halo-C.sub.2-4 -alkynyloxy, phenyl-C.sub.2-4 -alkynyloxy, alkylsulfonyloxy, haloalkylsulfonyloxy, arylsulfonyloxy, halo, cyano, nitro, aryloxy, haloaryloxy, C.sub.1-4 -alkyl-aryloxy, or nitroaryloxy,R.sub.2 is hydrogen or C.sub.1-4 alkyl,R.sub.3 is hydrogen, cyano or ethynyl,R.sub.4 is phenyl or pyridyl or one of these groups substituted by one or more of C.sub.1-6 -alkyl, halo-C.sub.1-6 -alkyl, phenyl-C.sub.1-6 -alkyl, C.sub.1-6 -alkyl interrupted by an O--, N-- or S-- atom, C.sub.2-4 -alkenyl, halo-C.sub.2-4 -alkenyl, phenyl-C.

Abstract: New 2-phenoxy propionic acid derivatives of pentite are disclosed, of the general Formula ##STR1## in which one of the substituents Y is the group ##STR2## and pairs of other substituents Y are the group ##STR3## wherein Z is phenyl, 2-pyridyl, or 2-quinoxalinyl, or phenyl, 2-pyridyl or 2-quinoxalinyl substituted one or more times the same or differently by halogen, C.sub.1 -C.sub.6 -alkoxy, C.sub.1 -C.sub.6 -alkyl, nitro or trifluoromethyl andR.sub.1 and R.sub.2 are the same or different and are each hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -alkyl substituted one or more times the same or differently by halogen, C.sub.1 -C.sub.6 -alkoxy, phenoxy or halogen phenoxy, aryl-C.sub.1 -C.sub.3 -alkyl, aryl-C.sub.1 -C.sub.3 -alkyl substituted one or more times the same or differently by C.sub.1 -C.sub.6 -alkyl, halogen, C.sub.1 -C.sub.6 -alkoxy, nitro or trifluoromethyl, C.sub.3 -C.sub.

Abstract: New 1,2,3-thiadiazol-3-in-5-yliden-urea derivatives are disclosed of the general formula ##STR1## in which R.sub.1 is hydrogen or an, if necessary, interrupted one or more times oxygen or sulfur atom, C.sub.1 -C.sub.4 -alkyl group,R.sub.2 is an, if necessary interrupted one or more times by oxygen or sulfur atoms C.sub.1 -C.sub.4 -alkyl group, an, if necessary, substituted one or more times by alkyl C.sub.3 -C.sub.8 cycloalkyl group, an, if necessary, substituted one or more times by alkyl and/or halogen and/or alkylthio and/or alkoxy and/or trifluoromethyl and/or nitro aromatic hydrocarbon group or an, if necessary, substituted heterocyclic, at least one N-atom-containing, hydrocarbon group or R.sub.1 and R.sub.2 together with the N-atom are morpholino-, piperidino- or pyrolidino,R.sub.3 is an, if necessary, substituted C.sub.1 -C.sub.10 -alkyl group, a C.sub.2 -C.sub.6 -alkenyl, or C.sub.3 -C.sub.6 -alkenyl group, or an, if necessary, substituted aryl-C.sub.1 -C.sub.

Abstract: New 1,2,3-thiadiazole-5-yl-urea derivatives as plant growth regulating agents are provided, including processes for producing and using these compounds. The new 1,2,3-thiadiazole-5-yl-urea derivatives have the formula ##STR1## in which R.sub.1 is an aromatic hydrocarbon group which may be substituted with one or more members of the group consisting of C.sub.1 -C.sub.6 -alkyl, halogen, C.sub.1 -C.sub.6 -alkoxy, nitro and trifluoromethyl and R.sub.2 is hydrogen, a monovalent metal or its metal equivalent, a substituted or unsubstituted C.sub.1 -C.sub.6 -alkyl, a C.sub.3 -C.sub.6 -alkenyl or alkinyl, a substituted or unsubstituted aryl- C.sub.1 -C.sub.2 -alkyl or the group aryl-C.sub.1 -C.sub.2 -alkyl ##STR2## wherein R.sub.3 is hydrogen, a substituted or unsubstituted C.sub.1 -C.sub.10 -alkyl, C.sub.2 -C.sub.6 -alkenyl, a C.sub.2 -C.sub.6 -alkenyl, an aryl-C.sub.1 -C.sub.2 -alkyl, a C.sub.3 -C.sub.8 -cycloaliphatic hydrocarbon group which may be substituted with one or more C.sub.1 -C.sub.

Abstract: New 1,2,3-thiadiazole-5-yl-urea derivatives of the formula ##STR1## wherein R.sub.1 is hydrogen or a C.sub.1 -C.sub.4 alkyl group which may be interrupted by one or more sulfur or oxygen atoms, R.sub.2 is a C.sub.1 -C.sub.4 alkyl which may be interrupted by one or more sulfur or oxygen atoms, a cycloaliphatic hydrocarbon group which may be substituted by one or more alkyl groups, an aromatic hydrocarbon group which may be substituted by one or more members of the group consisting of alkyl, halogen, alkyl thio, alkoxy, trifluoromethyl and nitro, or a heterocyclic hydrocarbon group which may be substituted containing at least one nitrogen atom, R.sub.3 is hydrogen, a C.sub.1 -C.sub.10 alkyl group which may be substituted, a C.sub.2 -C.sub.8 alkenyl, an aryl-C.sub.1 -C.sub.2 alkyl, a C.sub.3 -C.sub.8 -cycloaliphatic hydrocarbon group which may be substituted with one or more C.sub.1 -C.sub.

Abstract: The invention concerns new xylite derivatives, methods for the production of these compounds as well as compositions containing them having growth regulatory activity for plants.

Abstract: A process for the preparation of 1,2,3-thiadiazol-5-yl ureas of the general formula ##STR1## in which a 1,2,3-thiadiazol-5-carbohydroxam acid derivative of the formula ##STR2## is dissolved in an inert organic solvent with an acid halide of the formulaR.sub.4 -X IIIto form an acylated derivative which then reacts with an amine of the formula ##STR3## to form the desired product.

Abstract: A process for producing compounds of 1,2,3-thiadiazole-5-carboxylic acid is described. These compounds are effective as herbicides, fungicides and plant growth controllers.

Abstract: A process for making 5-mercapto-1,2,3-triazoles of the formula ##STR1## wherein R.sub.1 is hydrogen or a C.sub.1 -C.sub.4 -alkyl which may also be substituted, the said process comprising(1) as a first step reacting a solution of 1,2,3-thiadiazole-5-carbohydroxamic acid derivative of the formula ##STR2## wherein R.sub.1 has the meaning as above and R.sub.2 is hydrogen or a univalent metal equivalent in an inert organic solvent in the presence of an acid acceptor with a solution in an inert organic solvent of an acid halide of the formulaR.sub.3 --Xso as to form an acylated 1,2,3-thiadiazole-5-carbohydroxamic acid derivative(2) reacting as a solution in an inert organic solvent the carbohydroxamic acid derivative just obtained with an alcohol or phenol of the formulaH--O--R.sub.

Abstract: 1,2,3-Thiadiazole-5-carboxylic acid amide derivatives of the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 have the meaning indicated in the specification. Preferably, R.sub.1 is methyl and R.sub.2 is acetyl, chloroacetyl, propionyl, valeryl, cinnamoyl, cyclohexylcarbonyl, dichlorophenoxyacetyl, benzoyl, halobenzoyl, dichlorobenzoyl or methylbenzoyl, and R.sub.3 is benzyl, halobenzyl, cyclohexyl, methyl-cyclohexyl or cyclohexylmethyl. The compounds have herbicidal, growth regulating, defoliating and fungicidal activity, although not all of these activities will be present in each of the compounds. The compounds are in addition highly selective against agriculturally valuable plants such as various grains, cotton, soybeans and plantation cultures.

Abstract: A process is provided for production of acylhydrazones of formyl-acetic acid ester of the general formula ##STR1## wherein R.sub.1 is an alkyl group with from 1 to 6 carbon atoms and R.sub.2 is an alkoxy group or an amino group. A propiolic acid ester of the general formulaH--C.tbd.C--COOR.sub.1is contacted with hydrazine derivatives of the general formulaH.sub.2 N--NH--CO--R.sub.2in the presence of a solvent such as water or a lower alcohol. The resulting products are technically valuable starting materials for the production of biocides, for example of 1,2,3-thiadiazole derivatives.

Abstract: A process for the preparation of compound of the general formula ##STR1## described, in which a compound of formula ##STR2## is reacted with alcohol or phenol of formula ##STR3## in an organic solvent to form a compound of formula ##STR4## which is converted by acid or base catalyzed reaction to form a compound of formula ##STR5## which is then rearranged in the presence of base to form the desired product.

Abstract: 1,2,3-Thiadiazole-3-in-5-ylidene-urea derivative of the formula ##STR1## in which R.sub.1 is hydrogen or alkyl which may be substituted in one or several places by oxygen or sulfur and wherein R.sub.2 and R.sub.3 have the meaning as given in the attached specification and wherein X is oxygen or sulfur. The compounds have properties suited for controlling the natural growth and natural development of plants and in addition have a superior defoliating property without accompanying unpleasant odors.

Abstract: 1,2,3-Triazole carboxylic acid amides, of the formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4 and n have the meaning defined in the specification in connection with formula I. The compounds have a broad biocidal, particularly herbicidal, insecticidal, acaricidal, fungicidal and nematocidal activity. They have a high degree of selectivity towards agriculturally valuable plants.

Abstract: 1,2,3-Thiadiazole-2-id-derivative of the formula ##STR1## in which R.sub.1 is hydrogen or alkyl which may be substituted in one or several places by oxygen or sulfur and wherein R.sub.1 has the meaning as given in the attached specification and wherein X is oxygen or sulfur and B is a univalent metal atom. The compounds have properties suited for controlling the natural growth and natural development of plants and in addition have a superior defoliating property.

Abstract: There are provided new alkane and alkoxyalkane derivatives of the general formula I in which R1, R2, R3, R4 and A have the meanings given in the description, processes for their preparation and insecticidal and acaricidal compositions containing these compounds.