Abstract: The manufacture of 5-dichloroacetyl-3,3,6-trimethyl-9-oxo-1,5-diazabicyclo?4.3.0!-nonane I by the reaction of 3,3,6-trimethyl-9-oxo-1,5-diaza-bicyclo?4.3.0!nonane II with dichloroacetyl chloride in the presence of a solvent and a base, whereina) this reaction is carried out in a two-phase system comprising a virtually water-insoluble organic solvent and water, and sodium or potassium hydroxide acting as the base is metered in at a rate corresponding to the rate of consumption of the dichloroacetyl chloride such that the aqueous phase exhibits a pH of from 7 to 9, andb) the resulting product is separated.

Abstract: .alpha.,.beta.-Unsaturated ketones of the general formula I ##STR1## where R is an organic radical, are prepared by reacting a corresponding aldehyde R--CHO with acetoacetic acid or one of its salts in the presence of an amine in a two-phase reaction mixture by a process in which the reaction is carried out at a pH of from 6 to 8 in the presence of a catalytic amount of a primary amine.

Abstract: Purification of 7-chloroquinoline-8-carboxylic acids I ##STR1## (X=H, halogen, lower alkyl group) by recrystallization from lower alcohols which are miscible with water, by carrying the recrystallization in the presence of small amounts of a base.The quinolinecarboxylic acids I are valuable crop protection agents.

Abstract: A process for the preparation of cyclohexanedione derivatives of the general formula I ##STR1## where R.sup.1 is C.sub.2 -C.sub.8 -alkyl, C.sub.2 -C.sub.8 -alkenyl, C.sub.3 -C.sub.12 -cycloalkyl, C.sub.5 -C.sub.12 -cycloalkyl with 0-4 olefinically unsaturated bonds, C.sub.2 -C.sub.8 -alkylthioalkyl, C.sub.6 -C.sub.12 -bicycloalkyl with 0-3 olefinically unsaturated bonds, unsubstituted or substituted aryl or hetaryl, or a heterocyclic radical of 4 to 7 atoms of which not more than 3 may be hetero-atoms chosen from O, S and N, the radical being saturated or olefinically unsaturated, by reacting an .alpha.,.beta.-unsaturated ketone (II) with a dialkyl malonate in the presence of a base to give the alkoxycarbonylcyclohexenolone or its salt (III) ##STR2## and acylation, hydrolysis and decarboxylation of (III), wherein the .alpha.,.beta.

Abstract: A process for the preparation of cyclohexanedione derivatives of the general formula I ##STR1## where R.sup.1 is C.sub.2 -C.sub.8 -alkyl, C.sub.2 -C.sub.8 -alkenyl, C.sub.3 -C.sub.12 -cycloalkyl, C.sub.5 -C.sub.12 -cycloalkyl with 0-4 olefinically unsaturated bonds, C.sub.2 -C.sub.8 -alkylthioalkyl, C.sub.6 -C.sub.12 -bicycloalkyl with 0-3 olefinically unsaturated bonds, unsubstituted or substituted aryl or hetaryl, or a heterocyclic radical of 4 to 7 atoms of which not more than 3 may be hetero-atoms chosen from O, S and N, the radical being saturated or olefinically unsaturated, by reacting an .alpha.,.beta.-unsaturated ketone (II) with a dialkyl malonate in the presence of a base to give the alkoxycarbonylcyclohexenolone or its salt (III) ##STR2## and acylation, hydrolysis and decarboxylation of (III), wherein the .alpha.,.beta.

Abstract: Quinoline derivatives of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are hydrogen, methyl, halogen or nitro, R.sup.5 is a thiophene, pyrrole, oxazole, thiazole, imidazole, isoxazole, isothiazole, pyrazole, thiadiazole, oxadiazole or triazole radical which is substituted or unsubstituted, or is a substituted furan radical, and microbicidal agents containing these compounds.

Abstract: Compounds of the formula I ##STR1## where R.sup.1 and R.sup.2 are identical or different and are each hyrogen or alkyl of 1 to 5 carbon atoms, the radicals X are identical or different substituents selected from the group consisting of halogen, cyano, trifluoromethyl, nitro, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, unsubstituted or substituted phenyl or hydrogen, m is from zero to 5, n is an integer from 2 to 6 and Y is --CO-- or --CH(OH)--, their intermediates of the formula (II) ##STR2## and the use of the compounds (I) as plant growth regulators.

Abstract: Pyridazinone derivatives of the formula ##STR1## where R.sup.1 is alkyl, alkenyl, cycloalkyl or unsubstituted or substituted phenyl, R.sup.2 is chlorine or bromine, R.sup.3 is hydrogen, alkyl, cycloalkyl or unsubstituted or substituted phenyl and X is SO or SO.sub.2, with the proviso that R.sup.1 is not methyl when X is SO.sub.2, R.sup.2 is chlorine and R.sup.3 is phenyl, and fungicides containing these compounds.

Abstract: Cyclohexenol derivatives of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, X and A have the meanings stated in the description, are used for controlling undesirable plant growth.

Abstract: Pyridazinone derivatives of the formula I ##STR1## where R.sup.1 is hydrogen, unsubstituted or substituted alkyl, cycloalkyl, or unsubstituted or substituted phenyl or is carboxyl, hydroxymethyl or --CH.sub.2 O--COR.sup.3, where R.sup.3 is alkyl, or is --CH.sub.2 O[CH.sub.2 CH.sub.2 O].sub.p R.sup.4, where R.sup.4 is alkyl or phenyl and p is 1, 2 or 3,R.sup.2 is phenyl, unsubstituted or substituted vinyl or 2-propenyl,X is halogen,m is 1 or 2 andn is 1, 2, 3 or 4, and fungicides containing these compounds.

Abstract: Cyclohexane-1,3-dione derivatives of the formula ##STR1## where A is tetrahydropyran-4-yl, 3-methyltetrahydropyran-4-yl, 1,4-dioxanyl, 5,5-dimethyl-1,3-dioxan-2-yl, 2,5-dimethyl-1,4-dioxan-3-yl, 2,6-dimethyl-1,4-dioxan-3-yl, 2-methyl-1,3-dithiolan-2-yl, 2,6-dimethyltetrahydrothiopyran-3-yl, 2-methyl-1,3-dithian-2-yl or unsubstituted or substituted 1,3-dioxepan-5-yl, R.sup.1 is hydrogen or methoxycarbonyl, R.sup.2 is alkyl and R.sup.3 is alkyl, alkenyl, haloalkenyl or propargyl, are used for controlling undesirable plant growth of grass species, especially in broadleaved crops and monocotyledon crops which do not belong to the grass family.

Abstract: Aromatic azomethines are prepared by reacting anilines with formaldehyde and then removing the greater part of the water by distillation, low-boiling alcohols, in certain amounts, being present during the distillation and, if desired, during the reaction or during a part thereof.The aromatic azomethines obtainable by the novel process are valuable starting materials for the preparation of herbicides, especially pre-emergence herbicides and post-emergence herbicides, fungicides, insecticides, bacteriostatic agents, fungistatic agents and vulcanization accelerators.

Abstract: The manufacture of substantially pure 4-amino-5-chloro-1-phenylpyridaz-6-one by reaction of 4,5-dichloro-1-phenylpyridaz-6-one with ammonia in the presence of phenol-4-sulfonic acid.