Abstract: The present invention relates to a novel process for preparing halogenated di-substituted benzylamines, particularly halogenated dialkylbenzylamines.

Abstract: The present invention relates primarily to a process for preparing certain phosphorus-containing cyanohydrins of the formula (I), and also to certain phosphorus-containing cyanohydrins per se and to their use for the preparation of glufosinate and/or glufosinate salts. The present invention further relates to certain mixtures particularly suitable for preparing the phosphorus-containing cyanohydrins of the formula (I).

Abstract: The present invention relates to a novel process for preparing halogenated di-substituted benzylamines, particularly halogenated dialkylbenzylamines.

Abstract: Method for preparing certain oximes and oxime O-methyl ethers by reacting poorly water-soluble carbonyl compounds with salts of hydroxylamine or hydroxylamine O-methyl ether or the free base of hydroxylamine in the presence of certain phosphoric esters or salts thereof of the formula (I) wherein R1, R2 and X are defined as specified in the description.

Abstract: The present invention relates to a novel process for preparing cis-alkoxy-substituted spirocyclic phenylacetylamino acid esters and cis-alkoxy-substituted spirocyclic 1H-pyrrolidine-2,4-dione derivatives, and also to novel intermediates and starting materials which are produced and/or used in the process according to the invention.

Abstract: The present invention relates to a novel process for preparing cis-alkoxy-substituted spirocyclic phenylacetylamino acid esters and cis-alkoxy-substituted spirocyclic 1H-pyrrolidine-2,4-dione derivatives, and also to novel intermediates and starting materials which are produced and/or used in the process according to the invention.

Abstract: Method for preparing certain oximes and oxime O-methyl ethers by reacting poorly water-soluble carbonyl compounds with salts of hydroxylamine or hydroxylamine O-methyl ether or the free base of hydroxylamine in the presence of certain phosphoric esters or salts thereof of the formula (I) wherein R1, R2 and X are defined as specified in the description.

Abstract: The present invention relates to a novel process for preparing cis-alkoxy-substituted spirocyclic phenylacetylamino acid esters and cis-alkoxy-substituted spirocyclic 1H-pyrrolidine-2,4-dione derivatives, and also to novel intermediates and starting materials which are produced and/or used in the process according to the invention.

Abstract: The present invention relates to a process for preparing cyanimino-1,3-thiazolidines, which are important building blocks for the preparation of crop protection active ingredients and pharmaceuticals, by the following scheme: where A is an alkali metal and X represents an acid radical.

Abstract: A process is described for producing 2-chloroallyl isothiocyanate from 2,3-dichloro-1-propene by reacting the 2,3-dichloro-1-propene with a thiocyanate in the presence of a phase transfer catalyst, without diluent or in the presence of up to 15 percent by weight based on 2,3-dichloropropene and simultaneously in the presence of an excess of from 10 to 200 mol percent of 2,3-dichloro-1-propene based on the thiocyanate. A process starting from 1,2,3-trichloropropane is also described.

Abstract: A process is described for producing 2-chloroallyl isothiocyanate from 2,3-dichloro-1-propene by reacting the 2,3-dichloro-1-propene with a thiocyanate in the presence of a phase transfer catalyst, without diluent or in the presence of up to 15 percent by weight based on 2,3-dichloropropene and simultaneously in the presence of an excess of from 10 to 200 mol percent of 2,3-dichloro-1-propene based on the thiocyanate. A process starting from 1,2,3-trichloropropane is also described.

Abstract: The present invention relates to a process for preparing cyanimino-1,3-thiazolidines, which are important building blocks for the preparation of crop protection active ingredients and pharmaceuticals, by the following scheme: where A is an alkali metal and X represents an acid radical.

Abstract: The invention concerns a new method for producing optically active 1-phenylethylamines, wherein (a) racemic 1-phenylethylamines are reacted with (S)-(-)-N-phenylcarbamate lactic acid in the presence of an aliphatic or aromatic hydrocarbon and in the presence of a lower aliphatic alcohol, wherein the reaction components are measured so that for every mole of racemic amine, between 0.25 and 0.5 mole of (S)-(-)-N-phenylcarbamate lactic acid are present, the reaction mixture is then concentrated at a liquid-phase temperature of up to 40.degree. C.

Abstract: A new process for the racemization of optically active 1-aryl-alkylamines of the formula (I) ##STR1## in which Ar represents optionally substituted aryl andR represents alkyl,which is characterized in that compounds of the formula (I) which largely have the R- or S-configuration at the carbon atom marked by * are reacted with metal alkoxides in dimethyl sulphoxide, optionally in the presence of appropriate alcohols, at temperatures between 0.degree. C. and 200.degree. C.

Abstract: A process for the preparation of a sulphonylisourea of the formula ##STR1## in which R.sup.1 is an optionally substituted radical selected from the group consisting of alkyl, aralkyl, aryl and heteroaryl,R.sup.2 is alkyl or aralkyl,R.sup.3 is hydrogen, halogen or in each case optionally substituted alkyl or alkoxy,R.sup.4 is hydrogen, halogen or in each case optionally substituted alkyl or alkoxy andZ is nitrogen or a CH grouping,which comprises reacting an isourea of the formula ##STR2## with a sulphonyl halide of the formulaR.sup.1 --SO.sub.2 --X (III)in whichX is halogen,in the presence of an acid acceptor at a temperature between about -20.degree. C. and +50.degree. C. Some of the compounds II are new.

Abstract: A process for making the known fungicide intermediate 2-(4-chlorophenyl ethyl)-2-tert.-butyloxirane of the formula ##STR1## comprising (a) mixing a solution of trimethylsulphonium bromide of the formula(CH.sub.3).sub.3 S.sup..sym. Br.sup..crclbar. (II)in a methanol/toluene mixture with preheated toluene and simultaneously distilling off a methanol/toluene mixture at a temperature between 65.degree. and 110.degree. C. until a suspension having a solids content between 10 and 70% by weight is formed, and(b) reacting the suspension of trimethylsulphonium bromide in toluene thus obtained with 1-(4-chlorophenyl)-4,4-dimethylpentan-3-one of the formula ##STR2## in the presence of solid potassium hydroxide, diethylene glycol and water at a temperature between 20.degree. and 120.degree. C.