Abstract: Organosilyl compounds of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are alkyl, substituted alkyl, alkenyl, alkynyl, cycloalkyl, phenyl or substituted aryl, R.sup.4 and R.sup.5 are alkyl or hydrogen and Y is CH.sub.2, oxygen, nitrogen or alkyl-substituted nitrogen, their salts and fungicides containing these compounds.

Abstract: Brefeldin A derivatives of the formula ##STR1## where R is alkyl, unsubstituted or substituted alkanoyl, unsubstituted or substituted aralkyl, unsubstituted or substituted benzoyl, a radical of the formula (R.sup.1 O).sub.2 P(O)-- or a radical R.sup.2 R.sup.3 R.sup.4 Si, and the use of brefeldin A and brefeldin A derivatives of the formula I for combatting unwanted plant growth.

Abstract: Organosilyl compounds of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are alkyl, substituted alkyl, alkenyl, alkynyl, cycloalkyl, phenyl or substituted aryl, R.sup.4 and R.sup.5 are alkyl or hydrogen and Y is CH.sub.2, oxygen, nitrogen or alkyl-substituted nitrogen, their salts and fungicides containing these compounds.

Abstract: Silylalkyl thioalkanoates of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, Q and n have the meanings mentioned in the description, are used for controlling undesirable plant growth.

Abstract: Thiadiazinones of the formula ##STR1## where R.sup.1 and R.sup.2 are identical or different and are each hydrogen, alkyl, cycloalkyl, phenyl or substituted aryl and R.sup.3 is phenyl or haloalkyl-substituted, alkyl-substituted, alkoxy-substituted or haloalkoxy-substituted or alkyl- or halo-substituted phenyl, are used in fungicides.

Abstract: Sulfonamides are prepared by reacting ammonia or an amine with a halosilane and then reacting the resulting silylamine with sulfuryl chloride in the presence of a solvent which is inert under the reaction conditions.The sulfonamides are used as intermediates for drugs and crop protection agents, and are starting materials for the preparation of alkylamidosulfonyl chlorides.

Abstract: 2-(Hydroxyphenoxy)-carboxylates are prepared by a process wherein a dihydroxybenzene (A) is reacted with a 2-halo-fatty acid ester (B) of an alcohol, phenol or oxime of no more than 10 carbon atoms, in a molar ratio of A:B.gtoreq.1.5, in the presence of calcium hydroxide in dimethylsulfoxide, at from 0.degree. to 100.degree. C.

Abstract: 1,2,4,6-Thiatriazine-1,1-dioxides of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, Y and n have the meanings given in the description, are used for controlling undesirable plant growth.

Abstract: Dihydrothiophenecarboxylates of the formula ##STR1## where R.sup.1 and R.sup.2 have the meanings given in the description, are used for controlling undesirable plant growth.

Abstract: 2H-1,2,4,6-Thiatriazin-3-one,1,1-dioxides of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 have the meanings given in the description, are used for controlling undesirable plant growth.

Abstract: Butadiene dinitriles are prepared by reacting a quaternary ammonium compound with malodinitrile in the presence of an alkanol and then reacting the product with an alkali metal compound.The butadiene dinitriles obtainable by the process of the invention are valuable starting materials for the preparation of dyes, pesticides, drugs and vitamins.

Abstract: 2-Aminopyridine derivatives are prepared by reacting a quaternary ammonium compound with malodinitrile in the presence of an alkanol, followed by reaction with ammonia in the presence of an alkanol, water and/or an ether to give aminonicotinonitrile and, if desired, then reacting this product with an alkali metal compound to give aminonicotinic acid.The 2-aminopyridine derivatives obtainable by the process of the invention are valuable starting materials for the preparation of pesticides, drugs, vitamins and dyes.

Abstract: Silyl-benzimidazole-2-carbamic acid esters of the formula I ##STR1## where Y and Z are hydrogen or a silyl radical of the formula ##STR2## where R.sup.1, R.sup.2 and R.sup.3 independently of one another are unsubstituted or halogen-substituted alkyl, alkenyl or alkynyl of up to 12 carbon atoms, cycloalkyl of up to 7 carbon atoms which is unsubstituted or substituted by alkyl or alkynyl of up to 4 carbon atoms, or phenyl which is unsubstituted or substituted by halogen or alkyl of up to 4 carbon atoms, and R is alkyl of up to 4 carbon atoms, with the proviso that Y and Z are not both hydrogen, and their use as fungicides.The new active ingredients are particularly suitable for combating harmful phycomycetes, ascomycetes and fungi imperfecti.

Abstract: Aromatic silanes are prepared by reacting an aromatic halogen compound with a disilane in the presence of a palladium complex and a phosphite or phosphine.The aromatic silanes obtainable by the process of the invention are valuable intermediates for the preparation of drugs, dyes and pesticides.

Abstract: N-Methyl-N-silyl-carbamates of the formula ##STR1## where R.sup.1 denotes hydrogen or unsubstituted or halogen-substituted alkyl of a maximum of 4 carbon atoms, R.sup.2, R.sup.3 and R.sup.4 are identical or different and each denotes alkyl of a maximum of 4 carbon atoms, and R.sup.5 denotes alkyl of a maximum of 4 carbon atoms or phenyl, processes for their manufacture, and their use for combating pests.

Abstract: 3,4,5,6-Tetrahydro-thiatriazine-3,5-dione-1,1-dioxides of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 have the meanings given in the main text, which possess herbicidal properties.

Abstract: 6H-1,2,4,6-Thiatriazine-1,1-dioxides of the formula ##STR1## where R.sup.1 and R.sup.2 are an aliphatic radical, a cycloaliphatic radical or a substituted aliphatic radical, R.sup.1 may also be unsubstituted or substituted phenyl, unsubstituted or substituted benzyl, or tetrahydrofurylmethyl and R.sup.2 may also be lower alkoxycarbo-lower alkoxy, lower alkylmercapto-carbo-lower alkoxy, lower alkoxy-carbo-lower alkylmercapto, lower alkylmercapto-carbo-lower alkylmercapto, unsubstituted or substituted aryl or unsubstituted or substituted benzyl,R.sup.3 is hydrogen, an aliphatic radical, a cycloaliphatic radical or substituted aliphatic radical,R.sup.4 and R.sup.5 are lower alkyl and R.sup.5 may also be hydrogen,X and Y are oxygen, sulfur, sulfinyl or sulfonyl andX.sup.1 is oxygen or sulfur, and herbicides containing these compounds.

Abstract: Azolyl-silyl-glycol ethers of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 denote C.sub.1-4 -alkyl or phenyl, R.sup.4 denotes C.sub.1-4 -alkyl, halogen or phenyl, m denotes one of the integers 0, 1, 2 and 3, and X and Y denote CH or N, salts thereof which are tolerated by plants, their manufacture, and their use as fungicides.

Abstract: 5,6-Dihydro-1,2,4,6-thiatriazin-5-one-1,1-dioxides of the formula ##STR1## where R.sup.1 is hydrogen, a metal atom or an unsubstituted or substituted ammonium radical,R.sup.2 is a saturated or unsaturated straight-chain aliphatic radical of up to 10 carbon atoms, a cycloaliphatic radical or 3 to 7 carbon atoms, a branched saturated or unsaturated aliphatic radical of 3 to 10 carbon atoms, a halogen-, alkoxy- or alkylmercapto-substituted aliphatic radical of 2 to 10 carbon atoms tetrahydrofuryl substituted methyl, a cycloalkoxy-substituted aliphatic radical of 4 to 10 carbon atoms, unsubstituted or halogen-substituted benzyl or phenyl, halophenyl, or alkylphenyl of a total of up to 10 carbon atoms,R.sup.3 is hydrogen, a straight-chain aliphatic radical of up to 10 carbon atoms, a cycloaliphatic radical of 3 to 7 carbon atoms, a branched aliphatic radical of 3 to 10 carbon atoms, haloalkyl, or alkoxyalkyl of 2 to 10 carbon atoms andX is oxygen and may also be sulfur if R.sup.

Abstract: 6H-1,2,4,6-Thiatriazine-1,1-dioxides of the formula I ##STR1## where R.sup.1 is an aliphatic radical, a cycloaliphatic radical, a substituted aliphatic radical, a cycloalkoxy-substituted aliphatic radical, unsubstituted or substituted phenyl, or unsubstituted or substituted benzyl, R.sup.2 is hydrogen, an aliphatic radical, a cycloaliphatic radical or substituted alkyl, X is oxygen, sulfur, sulfinyl or sulfonyl and Hal is halogen, herbicides containing these compounds, processes for their preparation, and methods for using the products as herbicides.