HALOGENATION OF RYLEN-CARBOXIMIDES WITH ELEMENTARY HALOGEN IN A TWO-PHASE MIXTURE COMPRISING AN ORGANIC SOLVENT AND WATER, WHEREIN FORMED HALOGEN HYDROCIDE IS CONTINUOUSLY REMOVABLE FROM THE ORGANIC SOLVENT

摘要

The invention relates to a method for producing halogenated rylen-carboxymides of general formula (I), wherein variables have the following significance: A and B are jointly an imid residue or, when n is equal to 1, A and B are Hal or one is Hal residue and another a hydrogen residue, R and R' represent independently of each other hydrogen, optionally substituted alkyl, cycloalkyl, aryl or hetaryl; Hal represents chlorine, bromine or iodine; n is equal to 1, 2 or 3; x is equal to from 2 to 8. The inventive method consists in reacting a rylen-carboxymide of general formula (II), wherein A' and B' are together an imid residue or, when n is equal to 1, are together a hydrogen with an elementary halogen in the presence of an inert organic solvent L1 characterised in that a halogen hydrocide formed during the reaction is continuously removed from said L1 solvent.