FREMGANGSMÅDE TIL FREMSTILLING AF SUBSTITUEREDE 1,3-DIHYDRO-2H-INDOL-2-ONER

Process for preparing 1,3-dihydro-2H-indol-2-ones, starting from thioalkyl-, or thiocycloalkyl-substituted indol-2-one compounds, involving a) dissolving or suspending the thioalkyl-, or thiocycloalkyl-substituted indol-2-one compounds in a polar solvent, b) adding a sulfur-containing salt to the solution or suspension, and c) heating the reaction mixture under reflux at a temperature which corresponds at most to the boiling temperature of the solvent. Use of the inventively prepared 1,3-dihydro-2H-indol-2-one as intermediates for the synthesis of fine chemicals and active ingredients from pharmacy and/or agriculture.