Abstract: A process for the preparation of thiophenols of formula wherein n is an integer from 1 to 5 and R is hydrogen, alkyl hydroxyalkyl, alkylamino, dialkylamino, alkenyl, alkynyl, alkoxy, alkylthio, phenyl, naphthyl, phenoxy, phenylthio, halogen, hydroxy, mercapto, carboxyl, sulfo or heterocyclyl, by reacting phenyldiazonium salts of formula wherein n and R are as defined and X is halogen or hydrogen sulfate, with sulfur at elevated temperature in the presence of an aqueous base and isolating the compounds of formula I.

Abstract: Process for preparing 4,6-dimethoxy-2-(methylsulfonyl)-1,3-pyrimidine by reacting 4,6dichloro-2-(methyltio)-1,3-pyrimidine in an inert organic solvent with an alkali metal methoxide, transfer of the resulting 4,6-dimethoxy-2-(methylthio)-1,3-pyrimidine into an aqueous-acidic medium and subsequent oxidation of this compound, of appropriate in the presence of a catalyst, wherein the oxidation is followed by a purification step in which the aqueous-acidic reaction mixture is adjusted with aqueous base to a pH in the range of 5-8 and stirred either in the presence or in the absence of an organic solvent, and the use of this compound for preparing herbicides, for example 7-[(4,6-dimethoxy-pyrimidin-2-yl)thio]-3-methylphthalide.

Abstract: A process for the preparation of thiophenols of formula (I) wherein n is an integer from 1 to 5 and R is hydrogen, alkyl, hydroxyalkyl, alkylamino, dialkylamino, alkenyl, alkynyl, alkoxy, alkylthio, phenyl, naphthyl, phenoxy, phenylthio, halogen, hydroxy, mercapto, carboxyl, sulfo or heterocyclyl, by reacting phenyldiazonium salts of formula (II) wherein n and R are as defined and X is halogen or hydrogen sulfate, with sulfur at elevated temperature in the presence of an aqueous base and isolating the compounds of formula (I).

Abstract: Method of producing thiobarbituric acid derivatives of formula I wherein R1 is SH, S−M+ or CH3S—, and M+ is an alkali metal ion, by hydrogenolysis of a compound of formula II wherein R2 is chlorine or CH3O—, with a) a hydrogenolysis agent in the presence of an inert solvent and by a direct reaction of the hydrogenolysis product with an alkali metal methylate in methanol, or b) with a hydrogenolysis agent in the presence of an inert solvent and in the presence of a methylation reagent, and subsequently with an alkali metal methylate in methanol, as well as the use of these compound of formula I in the production of 7-[(4,6-dimethoxy-pyrimidin-2-yl)thio]-3-methylphthalide.

Abstract: Process for preparing 4,6-dimethoxy-2-(methylsulfonyl)-1,3-pyrimidine by reacting 4,6dichloro-2-(methyltio)-1,3-pyrimidine in an inert organic solvent with an alkali metal methoxide, transfer of the resulting 4,6-dimethoxy-2-(methylthio)-1,3-pyrimidine into an aqueous-acidic medium and subsequent oxidation of this compound, of appropriate in the presence of a catalyst, wherein the oxidation is followed by a purification step in which the aqueous-acidic reaction mixture is adjusted with aqueous base to a pH in the range of 5-8 and stirred either in the presence or in the absence of an organic solvent, and the use of this compound for preparing herbicides, for example 7-[(4,6 dimethoxy-pyrimidin-2-yl)thio]-3-methylphthalide.

Abstract: Method of producing thiobarbituric acid derivatives of formula I 1

Abstract: (R)(+)-2-[4-(5-chloro 3-fluoropyridin-2-yloxy)-phenoxy]-propionic acid propinyl ester is produced by converting a compound of formula II in an inert organic solvent, without isolation of the intermediate products, with M2CO3, in which M is sodium or potassium, into the compound of formula III reacting this with the compound of formula IV to form the compound of formula V and converting this with a compound of formula VI wherein Z signifies phenylsulphonyl, tosyl, methylsulphonyl, nosyl, bromophenyl, Cl-, Br- or CICO-, into the compound of formula I.