FREMGANGSMAADE TIL FREMSTILLING AF N-SULFONYLURINSTOFFER

• Main Authors: NEMETH, SANDOR, BELAK, MARIA, DIOSZEGINE, ERZSEBET EICHHARDT, DUKAI, JOZSEF, BESENYEI, GABOR, NAGY, LAJOS, TOEMOERDI, ELEMER, SIMANDI, LASZLO, SZABO, MARIA, SOEPTEI, CSABA
• Format: Patent
• Language: Danish
• Published: 02.10.1989
• Edition: 4
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; APPARATUS THEREFOR; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; GENERAL METHODS OF ORGANIC CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention relates to a process for preparing sulphonyl-ureas of the general formula (I) (I) wherein Ar1 represents a phenyl, naphthyl or thienyl group, the derivatives thereof substituted by C1-4 alkyl, C1-4 haloalkyl, (halo)alkoxycarbonyl, (halo)alkyloxy, nitro, cyano groups as well as by halogen atoms, Ar2 represents a phenyl, pyridyl, pirimidinyl or triazinyl group and the derivatives thereof substituted by C1-4 (halo)alkyl, C1-4 (halo)alkyloxy, amino, O-acyl, O-arylsulphonyl, O-(substituted carbamoyl) groups as well as by halogen atoms. According to the invention N-halogen aryl sulphonamidate is reacted in the presence of a carbonylating catalyst, carbon monoxide and an aromatic amine, optionally in the presence of a phase transfer catalyst, or N-halogen aryl sulphonamidate is reacted with carbon monoxide in the presence of a carbonylating catalyst, and optionally in the presence of a phase transfer catalyst, then the obtained reaction mixture is further reacted with an aromatic amine or an N-halogen-arylamine-alkali metal salt is reacted with aryl-sulphonamid in the presence of a carbonylating catalyst, carbon monoxide and optionally in the presence of a phase transfer catalyst or an amine, amine dihalogenid, aryl sulphonamid are reacted in the presence of a carbonylating catalyst and carbon monoxide and the obtained reaction mixture is worked up in a known manner. The thus prepared sulphonyl-ureas are biologically active compounds, which are used in the pharmaceutical industry and for regulating plant growth.