Abstract: Polyhalogenated cinnamic acids and cinnamic acid derivatives are prepared by reacting diazonium salts accessible from polyhalogenated anilines with acrylic acid or acrylic acid derivatives in the presence of a homogeneous, palladium-containing catalyst at about ?5 to about +100° C. Some of the cinnamic acids and cinnamic acid derivatives obtainable in this way are new. Cinnamic acids and cinnamic acid derivatives which can be prepared according to the invention can be used for the preparation of indanones which are precursors for agro- and pharmaceutical chemicals and for substances having liquid-crystalline properties.

Abstract: A process is provided for preparing optionally substituted arylated benzylamines from the corresponding optionally substituted aryl halides and optionally substituted benzylamines using a specific solvent mixture, a base and a catalyst comprising a palladium compound and a bisaryldialkylphosphine.

Abstract: An advantageous process is provided for preparing methyl 4-(aminomethyl)benzoate by esterifying 4-(aminomethyl)benzoic acid and subsequently obtaining the methyl 4-(aminomethyl)benzoate, this process proceeding under specific pH and temperature control and isolation of the hydrochloride of methyl 4-(aminomethyl)benzoate formed as an intermediate being avoidable.

Abstract: An advantageous process is provided for preparing methyl 4-(aminomethyl)benzoate by esterifying 4-(aminomethyl)benzoic acid and subsequently obtaining the methyl 4-(aminomethyl)benzoate, this process proceeding under specific pH and temperature control and isolation of the hydrochloride of methyl 4-(aminomethyl)benzoate formed as an intermediate being avoidable.

Abstract: A process is provided for preparing optionally substituted arylated benzylamines from the corresponding optionally substituted aryl halides and optionally substituted benzylamines using a specific solvent mixture, a base and a catalyst comprising a palladium compound and a bisaryldialkylphosphine.

Abstract: 2-Alkyl-3-aryl- or -heteroaryloxaziridines are prepared in a particularly advantageous manner by oxidizing corresponding N-alkyl-aryl- or -heteroarylaldimines with an aromatic percarboxylic acid or a salt thereof in the presence of water, a water-soluble base, and a water-miscible solvent, at temperatures below 30° C. Using this method, it is also possible to obtain novel 2-alkyl-3-aryloxaziridines.

Abstract: Polyhalogenated cinnamic acids and cinnamic acid derivatives are prepared by reacting diazonium salts accessible from polyhalogenated anilines with acrylic acid or acrylic acid derivatives in the presence of a homogeneous, palladium-containing catalyst at about ?5 to about +100° C. Some of the cinnamic acids and cinnamic acid derivatives obtainable in this way are new. Cinnamic acids and cinnamic acid derivatives which can be prepared according to the invention can be used for the preparation of indanones which are precursors for agro- and pharmaceutical chemicals and for substances having liquid-crystalline properties.

Abstract: Polyhalogenated cinnamic acids and cinnamic acid derivatives are prepared by reacting diazonium salts accessible from polyhalogenated anilines with acrylic acid or acrylic acid derivatives in the presence of a homogeneous, palladium-containing catalyst at about ?5 to about +100° C. Some of the cinnamic acids and cinnamic acid derivatives obtainable in this way are new. Cinnamic acids and cinnamic acid derivatives which can be prepared according to the invention can be used for the preparation of indanones which are precursors for agro- and pharmaceutical chemicals and for substances having liquid-crystalline properties.

Abstract: 2-Alkyl-3-aryl- or -heteroaryloxaziridines are prepared in a particularly advantageous manner by oxidizing corresponding N-alkyl-aryl- or -heteroarylaldimines with an aromatic percarboxylic acid or a salt thereof in the presence of water, a water-soluble base, and a water-miscible solvent, at temperatures below 30° C. Using this method, it is also possible to obtain novel 2-alkyl-3-aryloxaziridines.

Abstract: 2-Alkyl-3-aryl- or -heteroaryloxaziridines are prepared in a particularly advantageous manner by oxidizing corresponding N-alkyl-aryl- or -heteroarylaldimines with an aromatic percarboxylic acid or a salt thereof in the presence of water, a water-soluble base, and a water-miscible solvent, at temperatures below 30° C. Using this method, it is also possible to obtain novel 2-alkyl-3-aryloxaziridines.

Abstract: A process is provided for preparing 4-hydroxy-3-nitrobiphenyl from 4-hydroxy-biphenyl by nitrating in the position adjacent to the phenolic hydroxyl group in high selectivity and yield, and the nitric acid used as the nitrating reagent is metered into the reaction system in a specific manner.

Abstract: This invention relates to a process for preparing N-substituted hydroxylamines from N-substituted aryl- or heteroaryloxaziridines by acid hydrolysis and isolation of the N-substituted hydroxylamines in the form of their salts.

Abstract: A process is provided for preparing 4-hydroxy-3-nitrobiphenyl from 4-hydroxy-biphenyl by nitrating in the position adjacent to the phenolic hydroxyl group in high selectivity and yield, and the nitric acid used as the nitrating reagent is metered into the reaction system in a specific manner.

Abstract: Polyhalogenated cinnamic acids and cinnamic acid derivatives are prepared by reacting diazonium salts accessible from polyhalogenated anilines with acrylic acid or acrylic acid derivatives in the presence of a homogeneous, palladium-containing catalyst at about −5 to about +100° C. Some of the cinnamic acids and cinnamic acid derivatives obtainable in this way are new. Cinnamic acids and cinnamic acid derivatives which can be prepared according to the invention can be used for the preparation of indanones which are precursors for agro- and pharmaceutical chemicals and for substances having liquid-crystalline properties.

Abstract: 2-Alkyl-3-aryl- or -heteroaryloxaziridines are prepared in a particularly advantageous manner by oxidizing corresponding N-alkyl-aryl- or -heteroarylaldimines with an aromatic percarboxylic acid or a salt thereof in the presence of water, a water-soluble base, and a water-miscible solvent, at temperatures below 30° C. Using this method, it is also possible to obtain novel 2-alkyl-3-aryloxaziridines.

Abstract: This invention relates to a process for preparing N-substituted hydroxylamines from N-substituted aryl- or heteroaryloxaziridines by acid hydrolysis and isolation of the N-substituted hydroxylamines in the form of their salts.