Abstract:
1. A PROCESS FOR THE CONTINUOUS PRODUCTION OF ANTHRANILIC ACID WHICH COMPRISES REACTING A STRATING COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE ALKALI METAL SALTS OF PHTHALAMIC OF STAGES, THE FRIST REACTION AQUEOUS MEDIUM IN A PLURALITY OF STAGES, THE REACTION STAGES FOR CONVERTING THE STARTING COMPOUND INTO THE ALKALI METAL SALT OF PHENYL ISOCYANATE-2-CARBOXYLIC ACID BEING CARRIED OUT UNDER SUBSTANTIALLY ADIABATIC CONDITIONS WHILE SUBSTANTIALLY AVOIDING ANY BACKMIXING, THE RESULTING REACTION MIXTURE BEING IMMEDIATELY WITHDRAWN FROM THE REACTION ZONE OF SAID FIRST STAGES AND THEN SUPPLIED SUBSTNATIALLY WITHOUT BACKMIXING TO THE REACTION ZONE OF AT LEAST ONE SUBSEQUENT STAGE FOR HYDROLYSIS AND DECARBOXYLATION OF SAID PHENYL ISOCYANATE-2-CARBOXYLIC ACID INTO ANTHRANILLIC ACID, A REDUCING AGENT SELECTED FROM THE GROUP CONSISTING OF SODIUM BOROHYDRIDE, LITHIUM TRIETHOXY ALUMINUM HYDRIDE, SODIUM SULFIDE, SODIUM HYDROGEN SULFIDE, AMMONIUM SULFIDE, SULFUROUS ACID, SULFUR DIOXIDE, SODIUM DITHIONITE, SODIUM, THIOSULFATE, SODIUM FORMALDEHYDE SULFOXYLATE, THIOUREA DIOXIDE, HYDRAZINE AND ITS SALTS, GLUCOSE SODIUM SULFITE AND SODIUM BISULFATE BEING ADDED TO THE REACTION MIXTURE WITHDRAWN FROM THE REACTION ZONE OF SAID FIRST STAGES AND BEFORE THE REACTION HAS BEEN COMPLETED.
Abstract:
Production of 1-methyl-3-phenylindans by dimerization of styrenes in the presence of catalysts and oxidizing agents. The products are starting materials for the production of dyes and pesticides.
Abstract:
MANUFACTURE OF AROMATIC O-AMINONITRILES BY REACTION OF AROMATIC O-AMINOCARBOXAMIDES WITH DEHYDRATING AGENTS. AROMATIC O-AMINONITRILES ARE INTERMEDIATES IN THE MANUFACTURE OF DYES.
Abstract:
The production of 1-methyl-3-phenylindans by dimerization of styrenes in the presence of catalysts and poly-merization inhibitors. The products are valuable starting materials for the production of dyes and pesticides.
Abstract:
PRODUCTION OF 1-METHYL-3-PHENYLINDANS BY DIMERIZATION OF STYRENES IN THE PRESENCE OF A CATALYST AND A SURFACTANT. THE COMPOUNDS OBTAINABLE BY THE PROCESS OF THE INVENTION ARE VALUABLE STARTING MATERIALS FOR THE PRODUCTION OF DYES AND PRESTICIDES.
Abstract:
MANUFACTURE OF 1,2,3,3-TETRA-SUBSTITUTED INDOLENINIUM SALTS BY REACTING A SUBSTITUTED INDOLE WITH AN ALKYLATING AGENT IN THE PRESENCE OF COMPOUNDS OF METALS IN GROUP II OF THE PERIODIC SYSTEM. THE COMPOUND SPRODUCED BY THE PROCESS OF THE INVENTION ARE VALUABLE INTERMEDIATES FOR THE MANUFACTURE OF DYES AND PESTICIDES.
Abstract:
The production of o-benzoylbenzoic acid by oxidation of indanes with nitrogen dioxide in the presence of selenium dioxide. The compound which can be prepared by the process according to the invention is a valuable starting material for numerous syntheses. It is of special significance as a starting material for the production of anthraquinone.