Abstract: The invention relates to a process for the halogenation of organic compounds in the liquid phase using gaseous halogenating agents, the gaseous halogenating agents being metered into the reaction vessel at such an entry velocity that a gas jet is formed in the reaction mixture at the point of entry of the halogenating agent and the formation of individual gas bubbles at the point of entry is prevented.

Abstract: The invention relates to a process for the preparation of anilines which are m-substituted by chlorine, by selective dehalogenation of more highly chlorinated anilines in an acid medium in the presence of noble metal catalysts and in the presence of optionally substituted phenols.The 3-chloro- or 3,5-dichloroanilines obtainable by the process according to the invention are known intermediate products, and can be used for the preparation of plant protection agents.

Abstract: An improved process for the preparation of an m-halogen-substituted aniline from a polyhalogen substituted aniline by the reaction of the aniline with hydrogen in an acid medium is disclosed wherein the process is carried out in the presence of hydrogen iodide and/or a compound which under the reaction conditions yields hydrogen iodide and in the presence of an optionally substituted phenol.

Abstract: The invention relates to a process for the preparation of optionally p-chlorine-substituted 2,6-diaminotoluene, which is characterized in that 3,4-dichlorotoluene is dinitrated in the presence of an inert, water-immiscible, organic solvent and/or diluent at temperatures of -10.degree. to +100.degree. C. and is subsequently reduced, optionally after intermediate isolation of the dinitro compound, in the presence of an inert organic solvent and/or diluent and/or of water, with partial or complete splitting-off of the chlorine atoms, to give the diamino compound.2,6-Diaminotoluenes are valuable intermediates for the preparation of diisocyanates and polyurethanes; the 2,6-diaminotoluene is furthermore used for the preparation of dyestuffs and antioxidants.

Abstract: Compositions containing ditolyl ethers have outstanding dielectric properties. They are particularly suitable for use as impregnating agents in condensers.

Abstract: The invention relates to a process for the preparation of 4-nitrodiphenylamines by the reaction of halogenonitrobenzenes with primary aromatic amines in the presence of copper or a copper compound, a neutralizing agent and a cyclic diaza compound.

Abstract: Process for the preparation of 4-chloro-2,6-dialkylanilines, characterized in that the ammonium salts of the 2,6-dialkylanilines are reacted with a chlorination agent at -15.degree. to 100.degree. C. in the presence of an inert organic solvent and/or diluent and, if necessary, the presence of Friedel-Crafts catalysts, and 4-chloro-2,6-dialkylaniline is then liberated from the 4-chloro-2,6-dialkylanilinium salt obtained.

Abstract: Fungicidally active N-alkyl-carbamic acid 1,1,2-trimethyl-5-substituted-indan-4-yl esters of the formula ##STR1## in which R.sup.1 is an alkyl group,R.sup.2 is an alkyl or aralkyl group,R.sup.3 is a hydrogen atom, an alkyl group or a halogen atom, andR.sup.4 is a hydrogen atom, an alkyl group, a halogen atom, or an alkoxy or alkylmercapto group.

Abstract: 1,1,3,3-substituted hydroxyindanes of the formula ##STR1## wherein R.sup.1 is selected from the group of hydrogen, halogen and optionally substituted alkyl, cycloalkyl, aralkyl and aryl and the group ##STR2## wherein X is sulphur or the group ##STR3## R.sup.2 and R.sup.3 can be the same or different and are selected from the group of hydrogen, halogen and optionally substituted alkyl, cycloalkyl, aralkyl and aryl group, or, ifR.sup.2 and R.sup.3 are in the ortho position to each other, they may form a condensed carbocyclic 5-membered ring together with the carbon atoms of the benzene ring to which they are attached as substituents,R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8 and R.sup.9 are the same or different and are selected from the group of optionally substituted alkyl, cycloalkyl, aralkyl and aryl orR.sup.4 and R.sup.5 and/or R.sup.6 and R.sup.7 and/or R.sup.8 and R.sup.9 can form a cycloaliphatic ring together with the carbon atom to which they are attached as substituents orR.sup.6 and/or R.sup.

Abstract: In a process for the preparation of 3-phenoxy-benzaldehyde by oxidation of 3-phenoxy-benzyl alcohol of the formula ##STR1## in which m represents a number from 1 to 4,n represents a number from 1 to 5 andR.sup.1 and R.sup.2 are identical or different and denote hydrogen, halogen, alkyl, cycloalkyl, aralkyl, alkoxy, cycloalkoxy, aryloxy or perfluoroalkyl,with an oxygen containing gas in aqueous alkali at a temperature from the solidification point to the boiling point of the reaction mixture in the presence of a platinum metal catalyst and in the presence of lead and/or bismuth and/or tellurium and/or a compound of said lead, bismuth or tellurium.

Abstract: The present invention provides a process for the preparation of an alkylthiomethylphenol or arylthiomethylphenol of the general formula ##STR1## in which m, n, R and R.sup.1 have the meaning mentioned in the specification, in which a hydroxymethylphenol of the general formula ##STR2## is reacted with a mercaptan or thiophenol at a temperature of from 20.degree. to 200.degree. C., if appropriate in the presence of a diluent.

Abstract: A process for the preparation of a 4-aminodiphenyl amino derivative which comprises:(a) contacting a hydroxybenzene of the formula ##STR1## wherein R is hydroxyl or amino with an aniline compound of the formula ##STR2## wherein R.sub.1 represents hydrogen or an alkyl radical in the presence of a .gamma.-aluminum oxide containing catalyst; and(b) contacting the product from step (a) with ammonia in the presence of the same .gamma.-aluminum oxide containing catalyst used in step (a).

Abstract: A process for the preparation of 4-nitroso-diphenylamine by rearranging N-nitroso-diphenylamine according to Fischer-Hepp to o-dichlorobenzene, under the effect of alcoholic hydrochloric acid and working up the suspension of the 4-nitroso-diphenylamine-hydrochloride.

Abstract: 1,1-Dimethyl-indan-4-yl N-alkyl-carbamic acid esters of the formula ##STR1## in which R.sup.1 is alkyl, andR.sup.2 and R.sup.3 each independently is hydrogen or alkyl, which possess fungicidal and arthropod development-inhibiting properties.

Abstract: In the preparation of a 1-alkyl- and 2-aryl-thio-methylphenol of the formula ##STR1## in which R.sup.1 is, or the radicals R.sup.1 are, in the 3-, 5- and/or 6-positions relative to the hydroxyl group and each independently is a hydrogen or halogen atom, or an alkyl, cycloalkyl, aryl, aralkyl or alkoxy group,n is 1, 2, or 3, andR.sup.2 is an optionally substituted alkyl group having 1 to 12 carbon atoms, an optionally substituted cycloalkyl group having 3 to 6 carbon atoms, an optionally substituted phenyl radical or an optionally substituted aralkyl radical,by reacting a phenol of the formula ##STR2## with formaldehyde or an formaldehyde producing compound and with a mercaptan or a thiophenol of the formulaR.sup.2 --S--H.the improvement which comprises effecting the reaction at a temperature of about 90.degree. to 220.degree. C.

Abstract: A dielectric composition comprising a mixture of monoisopropylated diphenyls and polyisopropylated diphenyls, especially a mixture of 30 to 60 parts by weight of monoisopropylated diphenyls and 70 to 40 parts by weight of polyisopropylated diphenyls, the polyisopropylated diphenyls preferably being made up in turn of 60 to 85 parts by weight of diisopropylated diphenyls, 10 to 35 parts by weight of triisopropylated diphenyls and 0.5 to 5 parts by weight of tetraisopropylated diphenyls, these latter amounts being based upon the total amount of the polyisopropylated diphenyls.

Abstract: A process for the preparation of a-phenoxy-benzaldehyde which comprises contacting the 3-phenoxy-benzyl alcohol of the formula ##STR1## wherein R.sup.1 and R.sup.2 are identical or different and represent hydrogen or halogen with an aqueous solution of a dichromate in the presence of aqueous sulphuric acid at a temperature in the range of 50.degree. to 125.degree. C. The 3-phenoxy-benzaldehyde can be in a mixture of other organic compounds such as obtained by hydrolyzing a 3-phenoxy toluene chlorinated in the side chain at a temperature of 140.degree.-210.degree. C. under pressure.

Abstract: Mixtures of 2- and 4-hydroxybenzyl alcohol with high contents of 4-hydroxybenzyl alcohol are obtained by a process comprising reacting phenol with paraformaldehyde in the presence of a compound which exhibits two or more tertiary nitrogen atoms per molecule and a pK.sub.a value of .gtoreq.6.5 (measured at 20.degree. C. in water).

Abstract: Mixtures of 2- and 4-hydroxybenzyl alcohol with high contents of 4-hydroxybenzyl alcohol are obtained by a process comprising reacting phenol and paraformaldehyde in the presence of a strongly basic catalyst and a polyalkylene polyether.

Abstract: In a process for the preparation of an aryloxyacetic acid by oxidation of aryloxyethanol of the formula ##STR1## wherein m represents 1 or 2,n represents the numeral which results from the difference (6-m) andR either individually or independently of one another represent hydrogen, alkyl, cycloalkyl, aryl, aralkyl, alkoxy, cycloalkoxy, aryloxy, hydroxyl, halogen, alkylcarbonyl, arylcarbonyl, carboxyl or nitro, or represent a benzene ring or cycloalkane ring fused to the phenyl ring,with oxygen or an oxygen-containing gas in an aqueous alkaline medium at a temperature from 0.degree. C. to the boiling point of the reaction mixture in the presence of platinum metals and/or palladium metals containing catalyst, the improvement which comprises carrying out the oxidation in the additional presence of an activator of lead and/or bismuth and/or a compound thereof and optionally in the additional presence of Cadmium and/or its compounds.