| abstract |
PROCEDURE FOR THE PREPARATION OF A DERIVATIVE OF IMIDAZOLIDINDIONE SUBSTITUTED WITH A PHENYL OR PHENOXY RADICAL OF FORMULAS (I) OR (II), WHERE X IS O,S,SO,O SO2; AND H, CH3,CH3O, PH, PHO, F, CL OR BR IN POSITIONS 6 OR 8 AND AR IS PH OR OPH IN POSITIONS 6 OR 8. IT CONSISTS IN CONDENSING THE CORRESPONDING KETONE OF FORMULAS (III) OR (IV) WITH SODIUM OR POTASSIUM CYANIDE AND AMMONIUM CARBONATE, THE REACTION TAKING PLACE IN AN INERT POLAR ORGANIC SOLVENT IN WHICH THE REACTING SUBSTANCES AND THE REACTIVE SUBSTANCES ARE MUTUALLY MISCIBLE AT A TEMPERATURE BETWEEN 50 AND 150 G, DURING A PERIOD OF TWO TO FORTY-EIGHT HOURS , ABOUT. PREFERRED ORGANIC SOLVENTS ARE CYCLIC ETHERS, LOWER ALKYLENE GLYCOLS, AND WATER-MISCIBLE LOWER ALKANOLS. *FORMULA* |