Novel process for the production of sulfonylureas

Claim 1

THE PROCESS WHICH COMPRISES REACTING A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MONOALKALI METAL AND ALKALINE EARTH METAL SALTS OF AN ARYLSULFONAMIDE HAVING THE FORMULA RSO2NH2, WHEREIN R IS AN ARYL MOIETY SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED AND SUBSTITUTED PHENYL, THIENYL AND PYRIDYL RADICALS, SAID SUBSTITUTED RADICALS HAVING SUBSTITUENTS CHOSEN FROM THE GROUP CONSISTING OF HALOGEN, NITRO, AMINO, ACETYLAMINO, LOWER ALKYL AND LOWER ALKOXYL, IN AN INERT POLAR ORGANIC SOLVENT SELECTED FROM THE CLASS CONSISTING OF N,N-LOWER DIALKYL DERIVATIVES OF LOWER ALKANE HYDROCARBON CARBOXAMIDES, LOWER DIALKYL SULFOXIDES AND LOWER DIALKYL SULFONES WITH AN ARYL N-SUBSTITUTED CARBAMATE HAVING THE FORMULA R''NHCOXR", WHEREIN X IS A MEMBER OF THE GROUP CONSISTING OF OXYGEN AND SULFUR, R'' IS A MEMBER OF THE GROUP CONSISTING OF PHENYL, P-CHLOROPHENYL, PBROMOPHENYL, P-TOLYL, P-ANISYL, ALKYL HAVING FROM ONE TO TEN CARBON ATOMS, ALKENYL HAVING FROM THREE TO EIGHT CARBON ATOMS, CYCLOALKYL HAVING FROM THREE TO SIX CARBON ATOMS AND CYCLOALKYLAKYL HAVING FROM FOUR TO NINE CARBON ATOMS, AND R" IS A MEMBER OF THE GROUP CONSISTING OF PHENYL, P-CHLOROPHENYL, P-BORMOPHENYL, PNITROPHENYL, P-TOLYL, P-ANISYL, A-NAPHTHYL AND B-NAPHTHYL, SAID PROCESS BEING CONDUCTED AT A TEMPERATURE THAT IS IN THE RANGE OF FROM ABOUT 20*C. TO ABOUT 150*C. FOR ABOUT ONE-HALF TO ABOUT TEN HOURS.