Abstract: 3-Formyltetrahydrothiopyrans are prepared by hydrogenating a 3-formyl-5,6-dihydro-2H-thiopyran in the presence of a catalyst containing nickel, cobalt, platinum, copper and/or silver; if necessary, the 3-formyl-5,6-dihydro-2H-thiopyrans are prepared by converting bis-(.beta.-formylethyl) sulfides and/or 3-formyl-4-hydroxytetrahydrothiopyrans in the presence of an acidic catalyst, and, if required, these bis-(.beta.-formylethyl) sulfides and/or 3-formyl-4-hydroxytetrahydrothiopyrans are prepared by reacting an acrolein with hydrogen sulfide (a) in the presence of a basic catalyst and of methylene chloride, aromatic hydrocarbons and/or 1,1,2-trichloroethane as solvents, and/or (b) in the presence of a carboxamide.The compounds obtainable by the process according to the invention are useful starting materials for the preparation of dyes, drugs and pesticides.

Abstract: Cyclohexane-1,3-dione derivatives of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, A and X have the meanings given in the description, and their use for controlling undesirable plant growth.

Abstract: Aniline derivatives of the formula ##STR1## where R.sup.1 is alkoxy, alkylthio, unsubstituted or substituted cycloalkoxy or the radical --NR.sup.2 R.sup.3, X is --CH.sub.2 --, --CH(OH)-- or --CO--, A is an unsubstituted or substituted alkylene chain, B is unsubstituted or substituted methylene or dimethylene, Z is hydrogen, halogen, alkyl, alkoxy, haloalkyl or haloalkoxy, and n is 1, 2 or 3, are used for controlling undesirable plant growth.

Abstract: Substituted phenols of the general formula I ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each hydrogen or an aliphatic or aromatic hydrocarbon radical, are prepared by dehydrogenating a cyclic alcohol of the general formula II ##STR2## or a cyclic ketone of the general formula III ##STR3## where one of the broken lines can be an additional C-C bond, in the gas phase at from 150.degree. to 380.degree. C. over a supported noble metal catalyst, by a process in which the dehydrogenation catalyst used is palladium or platinum on an aluminum spinel carrier, in particular an aluminum spinel which has a BET specific surface area of from 5 to 150 m.sup.2 /g or, for the dehydrogenation of cyclohexenones, preferably from 10 to 50 m.sup.2 /g. Particularly suitable aluminum spinels are those which, in addition to aluminum, contain magnesium, zinc, cobalt or nickel.

Abstract: 3-Formyl-5,6-dihydro-2H-pyran is prepared by conversion of acrolein in the presence of water, acids and halohydrocarbons of 1 to 6 carbon atoms and 1 to 6 halogen atoms as solvents at from 60.degree. to 150.degree. C. The 3-formyl-5,6-dihydro-2H-pyran obtained by the novel process is a valuable starting material for the preparation of dyes and crop protection agents.

Abstract: 2,6-Dimethylmorpholine containing a high proportion of the cis compound is prepared by cyclization of diisopropanolamine (1,1'-iminobispropan-2-ol) in the presence of sulfuric acid, with simultaneous addition of the components and full utilization of the heat of reaction.

Abstract: Novel chloroacetic acid cyclohexylamides of the formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 have the meanings given in the description, their preparation and their use as herbicides.

Abstract: .alpha.-Azolylglycols of the formula ##STR1## where R.sup.1 is alkyl, R.sup.2 is alkyl or unsubstituted or substituted phenyl or biphenyl, R.sup.3 is hydrogen, alkyl, alkenyl, alkynyl or unsubstituted or substituted benzyl and X is CH or N, their plant-tolerated salts and metal complexes, their preparation, and their use as plant growth regulators.

Abstract: Aromatic amines (anilines) are obtained directly or via the corresponding cycloaliphatic amines by an aminating/hydrogenating reaction of phenols with ammonia and hydrogen over a supported palladium catalyst which also contains elements from group 1b, 2b or 7b of the periodic table as well as iron, cobalt or nickel, as such or in the form of their compounds, and, preferably, an inorganic base, said catalysts also having dehydrogenating properties.

Abstract: A process for the preparation of pyrazoles by reacting a pyrazoline with sulfur or selenium in a solvent.

Abstract: .alpha.-Azolyl-glycol derivatives of the formula ##STR1## where R.sup.1 is alkyl,R.sup.2 is alkyl or unsubstituted or substituted phenyl,R.sup.3 is hydrogen, alkyl, alkenyl, alkynyl or unsubstituted or substituted benzyl,R.sup.4 is unsubstituted or substituted alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkenyl, arylalkyl or heteroarylalkyl or, where n=1, may also be unsubstituted or substituted aryl or heteroaryl,X is CH or N andn is O or 1,their salts and metal complexes tolerated by crop plants, their preparation, and agents containing these derivatives for controlling fungi and regulating plant growth.

Abstract: Aromatic amines, in particular substituted amines, are obtained from corresponding alicyclic alcohols or ketones, in one step, by amination and dehydrogenation with ammonia in the presence of hydrogen and of a palladium catalyst which also contains zinc or cadmium.

Abstract: The present invention relates to acetanilides, processes for the manufacture of these acetanilides, herbicides containing these compounds, and processes for combating the growth of unwanted plants with these compounds.

Abstract: A novel process for the preparation of phenylpropyl halides of the formula ##STR1## by reacting the corresponding phenylpropyl halides, substituted only by R.sup.2 and R.sup.1, with an alcohol, alkyl halide or olefin; and phenylpropyl halides where R.sup.3 has certain meanings.

Abstract: New N-arylpropyl-substituted amines, and salts, molecular compounds and adducts thereof, having a good fungicidal action, fungicides containing these compounds, and processes for manufacturing these compounds.

Abstract: A process for the preparation of cis-2,6-dimethylmorpholine by isomerizing trans-2,6-dimethylmorpholine, wherein trans-2,6-dimethylmorpholine is converted, in the presence of hydrogen and of a catalyst containing palladium as well as zinc, cadmium or manganese or a mixture of these, at from 150.degree. to 250.degree. C. under a pressure of from 1 to 200 bar.

Abstract: A process for the preparation of aralkylamines of the formula ##STR1## where R.sup.1 is hydrogen, an aliphatic hydrocarbon radical, a cycloaliphatic radical or alkoxy,R.sup.2, R.sup.3 and R.sup.4 are hydrogen or alkyl,X.sup.1, X.sup.2, X.sup.3 and X.sup.4 are hydrogen or alkyl,A is ##STR2## X.sup.5, X.sup.6, X.sup.7, X.sup.8, X.sup.9 and X.sup.10 are hydrogen or alkyl andn is 2, 3 or 4,by reacting a secondary amine with a carbonyl compound in the presence of hydrogen and of a hydrogenation catalyst which comprises palladium, mixed with zinc, cadmium, manganese and/or a rare earth metal oxide, on an inert carrier.

Abstract: Insecticidal agents containing, as active ingredients, imidazole derivatives or salts thereof. The imidazole derivatives have the formula ##STR1## where R.sup.1 denotes branched alkyl of 6 to 20 carbon atoms, linear alkyl of 6 to 16 carbon atoms, branched alkenyl of 10 to 20 carbon atoms, linear or branched alkynyl of 3 to 6 carbon atoms, 2-methyl-3-phenylpropyl or 2-methyl-3-phenylpropen-2-yl, phenyl being unsubstituted or mono- or polysubstituted by halogen or alkyl of 1 to 10 carbon atoms, and R.sup.2, R.sup.3 and R.sup.4 denote hydrogen or methyl.These insecticidal agents are suitable as growth regulators and ovicides for controlling insects from the Lepidoptera, Coleoptera, Diptera, Hymenoptera, Heteroptera, Homoptera and Isoptera classes.

Abstract: Novel N-substituted 2,6-dialkylanilines and process for the preparation of N-substituted 2,6-dialkylanilines by reaction of 2,6-dialkylanilines with carbonyl compounds, followed by catalytic hydrogenation with hydrogen. The products are starting materials for the preparation of dyes and pesticides.

Abstract: A novel process for the preparation of phenylpropyl halides of the formula ##STR1## by reacting the corresponding phenylpropyl halides, substituted only by R.sup.2 and R.sup.1, with an alcohol, alkyl halide or olefin; and phenylpropyl halides where R.sup.3 has certain meanings.