Abstract: Novel carbaminic acid phenyl esters of the general formula ##STR1## are described, in which R.sub.1 is C.sub.1 -C.sub.2 -alkoxy-C.sub.1 -C.sub.2 -alkyl, di-C.sub.1 -C.sub.2 -alkoxy-C.sub.1 -C.sub.2 -alkyl, cyano-C.sub.1 -C.sub.2 -alkyl, halogen-C.sub.1 -C.sub.2 -alkyl, phenyl-C.sub.1 -C.sub.2 -alkyl, 1,3-dioxolan-2-yl-methyl, 2-methyl-1,3-dioxolan-4-yl-methyl, 2,2-dimethyl-1,3-dioxolan-4-yl-methyl or aminocarbonylmethyl;R.sub.2 is phenyl optionally mono- or disubstituted by one or more substituents selected from the group consisting of halogen, methyl and methoxy; andR.sub.3 is C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.8 alkenyl, cyclopropyl or trichloromethyl, or R.sub.1 is methyl or ethyl, R.sub.2 is .alpha.-cyanobenzyl or 1-cyano-2-phenylethyl and R.sub.3 is ethyl.

Abstract: Novel carbaminic acid phenyl esters of the general formula ##STR1## are described, in which R.sub.1 is C.sub.1 -C.sub.2 -alkoxy-C.sub.1 -C.sub.2 -alkyl, di-C.sub.1 -C.sub.2 -alkoxy-C.sub.1 -C.sub.2 -alkyl, cyano-C.sub.1 -C.sub.2 -alkyl, halogen-C.sub.1 -C.sub.2 -alkyl, phenyl-C.sub.1 -C.sub.2 -alkyl, 1,3-dioxolan-2-yl-methyl, 2-methyl-1,3-dioxolan-4-yl-methyl, 2,2-dimethyl-1,3-dioxolan-4-yl-methyl or aminocarbonylmethyl;R.sub.2 is phenyl optionally mono- or disubstituted by one or more substituents selected from the group consisting of halogen, methyl and methoxy; andR.sub.3 is C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.8 alkenyl, cyclopropyl or trichloromethyl, or R.sub.1 is methyl or ethyl, R.sub.2 is .alpha.-cyanobenzyl or 1-cyano-2-phenylethyl and R.sub.3 is ethyl.

Abstract: Novel carbaminic acid phenyl esters of the general formula ##STR1## are described, in which R.sub.1 is C.sub.1 -C.sub.2 -alkoxy-C.sub.1 -C.sub.2 -alkyl, di-C.sub.1 -C.sub.2 -alkoxy-C.sub.1 -C.sub.2 -alkyl, cyano-C.sub.1 -C.sub.2 -alkyl, halogen-C.sub.1 -C.sub.2 -alkyl, phenyl-C.sub.1 -C.sub.2 -alkyl, 1,3-dioxolan-2-yl-methyl, 2-methyl-1,3-dioxolan-4-yl-methyl, 2,2-dimethyl-1,3-dioxolan-4-yl-methyl or aminocarbonylmethyl;R.sub.2 is phenyl optionally mono- or disubstituted by one or more substituents selected from the group consisting of halogen, methyl and methoxy; andR.sub.3 is C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.8 alkenyl, cyclopropyl or trichloromethyl, or R.sub.1 is methyl or ethyl, R.sub.2 is .alpha.-cyanobenzyl or 1-cyano-2-phenylethyl and R.sub.3 is ethyl.

Abstract: Herbicidal compositions comprising or consisting of a compound of the formula ##STR1## in which R is an aliphatic, straight chain, branched or cyclic, saturated or unsaturated hydrocarbon residue of 1 to 6 carbons, R.sub.1 is hydrogen or methyl, R.sub.2 is cyanoalkyl or alkoxyalkyl, R.sub.3 is the same or different if more than one and is hydrogen, alkyl, alkoxy, alkylthio or halogen and n is 1 or 2. The compounds have a broad soil and leaf herbicidal effect and are suited particularly for selective weed suppression in cultures like soybeans, peas, alfalfa, potatoes, maize, sorghum, rice, wheat and barley.

Abstract: Novel carbaminic acid phenyl esters of the general formula ##STR1## are described, in which R.sub.1 is C.sub.1 -C.sub.2 -alkoxy-C.sub.1 -C.sub.2 -alkyl, di-C.sub.1 -C.sub.2 -alkoxy-C.sub.1 -C.sub.2 -alkyl, cyano-C.sub.1 -C.sub.2 -alkyl, halogen-C.sub.1 -C.sub.2 -alkyl, phenyl-C.sub.1 -C.sub.2 -alkyl, 1,3-dioxolan-2-yl-methyl, 2-methyl-1,3-dioxolan-4-yl-methyl, 2,2-dimethyl-1,3-dioxolan-4-yl-methyl or aminocarbonylmethyl;R.sub.2 is phenyl optionally mono- or disubstituted by one or more substituents selected from the group consisting of halogen, methyl and methoxy; andR.sub.3 is C.sub.1 -C.sub.8 alkyl, C.sub.2 -C.sub.8 alkenyl, cyclopropyl or trichloromethyl, or R.sub.1 is methyl or ethyl, R.sub.2 is .alpha.-cyanobenzyl or 1-cyano-2-phenylethyl and R.sub.3 is ethyl.

Abstract: 1,3,4-thiadiazole-2-carboxylic acid derivatives of the formula ##STR1## wherein R is C.sub.1 -C.sub.6 -alkyl, C.sub.2 -C.sub.6 -alkenyl, C.sub.2 -C.sub.6 -alkinyl or C.sub.3 -C.sub.6 -cycloalkyl,R.sub.1 is C.sub.1 -C.sub.6 -alkoxycarbonyl, aminocarbonyl, C.sub.1 -C.sub.8 -alkylaminocarbonyl, C.sub.3 -C.sub.6 -cycloalkylaminocarbonyl, di-C.sub.1 -C.sub.8 alkylaminocarbonyl, cyclohexylmethylaminocarbonyl, alkoxyalkylaminocarbonyl, morpholinocarbonyl, pyrrolidinocarbonyl, piperidinocarbonyl or cyano,and n is 0.1 or 2.The compounds wherein n is 1 or 2 have both a high fungicidal and nematocidal activity. The compounds in which n is 0 are the starting products or intermediate products in making the compound in which a sulfonyl or sulfinyl group is present (n=1 or 2) but have also nematocidal properties of their own. All compounds of the invention avoid the undesirable environmental properties and other shortcomings of the prior art products, particularly those of the broadly used mercury compounds.

Abstract: 1,3,4-thiadiazole-2-carboxylic acid derivatives of the formula ##STR1## wherein R is C.sub.1 -C.sub.6 -alkyl, C.sub.2 -C.sub.6 -alkenyl, C.sub.2 -C.sub.6 -alkinyl or C.sub.3 -C.sub.6 -cycloalkyl,R.sub.1 is C.sub.1 -C.sub.6 -alkoxycarbonyl, aminocarbonyl, C.sub.1 -C.sub.8 -alkylaminocarbonyl, C.sub.3 -C.sub.6 -cycloalkylaminocarbonyl, di-C.sub.1 -C.sub.8 -alkylaminocarbonyl, cyclohexylmethylaminocarbonyl, alkoxyalkylaminocarbonyl, morpholinocarbonyl, pyrrolidinocarbonyl, piperidinocarbonyl or cyano,and n is 0.1 or 2.The compounds where n is 1 or 2 have both a high fungicidal and nematocidal activity. The compounds in which n is 0 are the starting products or intermediate products in making the compound in which a sulfonyl or sulfinyl group is present (n=1 or 2) but have also nematocidal properties of their own. All compounds of the invention avoid the undesirable environmental properties and other shortcomings of the prior art products, particularly those of the broadly used mercury compounds.

Abstract: Carbamic acid ester of the formula ##STR1## in which R and R.sub.1 are the same or different and are hydrogen, an aliphatic hydrocarbon residue which may also be substituted, a cycloaliphatic hydrocarbon residue which may also be substituted, an aromatic hydrocarbon residue which may also be substituted or a heterocyclic residue or wherein R and R.sub.1 together with the adjoining nitrogen atom form a heterocyclic residue.The compounds of the invention are herbicidal agents of particularly strong activity.

Abstract: 2-(dimethylcarbamoylimino)-benzthiazoline-3-id-salts of the formula ##STR1## in which B.sup.(+) is a univalent metal equivalent. The compounds have herbicidal activity and may be used in herbicidal compositions.

Abstract: The specification discloses 5-alkylsulfonyl- and 5-alkylsulfinyl-1,3,4-thiadiazol-2-yl ureas which are characterized by a selective herbicidal activity against weeds while being innocuous against crop plants thus providing means and methods for the protection of fields of growing crops against infestation by undesirable weeds and grasses.

Abstract: A urea derivative of the formula ##STR1## in which R is hydrogen, alkyl, alkenyl, cyanoalkyl or phenyl andR.sub.1 is ##STR2## X, if several, being the same or different and X being hydrogen, alkyl, alkoxy, halogenoalkyl, alkylthio, alkylsulfinyl, alkylsulfonyl, halogeno or nitro, and n being an integer from 1 to 3. The compounds are useful as reactive agents in herbicidal composition. The invention also concerns a herbicidal composition in which a compound of the invention is the active agent or one of the active agents.

Abstract: 2-(Dimethylcarbamoylimino)-1,3,4-thiadiazoline-3-carboxylic acid ester derivative of the formula ##STR1## in which R is an aliphatic hydrocarbon and R.sub.1 is an aliphatic hydrocarbon, a halogenated aliphatic hydrocarbon, an aromatic hydrocarbon, a substituted aromatic hydrocarbon, an aliphatic-aromatic hydrocarbon or a substituted aliphatic-aromatic hydrocarbon and X is oxygen or sulfur. The compounds have a high herbicidal activity against weeds.

Abstract: 2-(Dimethylcarbamoylimino)-benzthiazoline-3-carboxylic acid ester of the formula ##STR1## in which R is an aliphatic hydrocarbon, a substituted aliphatic hydrocarbon, an aromatic hydrocarbon or a substituted aromatic hydrocarbon and X is oxygen or sulfur.The compounds have an excellent selectivity action in regard to agricultural plants and also possess a superior herbicidal activity against mono- and di-cotyl weeds.

Abstract: 2-(Dimethylcarbamoylimino)-1,3,4-thiadiazolin-3-carboxylic acid esters of the formula: ##STR1## in which R and R.sub.1 are aliphatic hydrocarbon groups which may be halogenated, and n is 0, 1 or 2, are effective herbicides, and exhibit a high degree of selectivity toward cultivated plants.

Abstract: 1,3,3-trimethyl-6-azabicyclo-(3.2.1)-octane-6-carboxylic acid ester of the formula ##STR1## in which R is an aliphatic hydrocarbon residue which may also be substituted, a cycloaliphatic hydrocarbon residue which may also be substituted, an aromatic hydrocarbon residue which may also be substituted or an araliphatic hydrocarbon residue and wherein X and Y are oxygen or sulphur. The compounds of the invention are characterized by a superior herbicidal activity in particular against monocotyl weeds. They also have excellent selective properties for agricultural plants.The invention also embraces a process of making the compounds of the invention and compositions in which the compounds of the invention form at least one of the active components.

Abstract: A pesticide which contains at least one compound of the formula ##STR1## in which Hal is halogen. The compositions have both a fungicidal and nematicidal action and have a high compatibility with agriculturally and horticulturally useful plants.

Abstract: (5-Alkylureido-1,3,4-thiadiazol-2-ylsulfonyl) acetic acid derivative of the formula ##STR1## in which R.sub.1 and R.sub.2 are hydrogen or alkyl and R.sub.3 is hydrogen, alkyl, univalent metal equivalent, an ammonium group or an alkyl ammonium group. The compositions are used for herbicidal purposes as the active agent in herbicide compositions.

Abstract: [5-(1,3-dimethylureido)-1,3,4-thiadiazol-2-ylthio]-acetic acid methylester (b.p. 113.degree. C.), [5-(1,3,3-trimethylureido)-1,3,4-thiadiazol-2-ylthio]-acetic acid ethylester (b.p. 95.degree. C.) and [5-(3-methylureido)-1,3,4-thiadiazol-2-ylthio]-acetic acid isopropylester (b.p. 143.degree. C.) in which R is hydrogen or alkyl. The compounds are useful as the active agents or one of the active agents in herbicidal compositions.

Abstract: New 1,3,4-thiadiazoles substituted in the 2 and 5 positions for use as soil and seed fungicides, nematocides and the processes therefor.

Abstract: The specification discloses the preparation and use, as fungicides and nematocides, of 2,5-substituted-1,3,4-thiadiazoles having the structure: ##STR1## wherein R.sub.1 is a lower haloalkyl and R.sub.2 is an aliphatic hydrocarbon.The instant invention is directed to methods for the control of fungi and nematodes in soil and seeds and to compounds useful in such methods. In another aspect, the invention is concerned with the preparation of 2,5-substituted-1,3,4-thiadiazoles and formulation for agricultural use in which such compounds are the principal biocidal ingredient.