ES400481A1 - Procedure for preparing imidazole derivatives of active surface. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Procedure for preparing surface-active imidazole derivatives of the formula **(See formula)** where Z or one of the Y represents the group: **(See formula)** and where Y or Z can each represent hydrogen or a substituent group chosen from lower alkyl groups with up to 6 carbon atoms, halogen, nitro or cyano, or both radicals Y can form part of a benzene ring substituted with a group chosen from lower alkyl groups with up to 6 carbon atoms, halogen, nitro, hydroxyl or amino; represents an alkyl group with 7 to 22 carbon atoms or an alkylphenyl or alkylbenzyl group with 8 to 16 carbon atoms in the alkyl chain; R2 is a group with the same meaning as R1 or is a lower alkyl or hydroxyalkyl group with 1 to 6 carbon atoms; said hydroxyalkyl group being optionally ethoxylated with 1 to 20 ethoxy residues; provided that if at least one of R1 and R2 is alkyl, it has 10 to 22 carbon atoms; R3 is a lower alkyl or hydroxyalkyl group with 1 to 6 carbon atoms, said hydroxyalkyl group being optionally ethoxylated with 1 to 20 ethoxy residues; n is 1-4; and X is an anion, or they have the corresponding zwitterionic structure: **(See formula)** where Z or one of the Y represents the group: **(See formula)** and where the symbols are defined as above; characterized in that it comprises condensing an appropriate halocarboxylic acid with an appropriate substituted ortho-phenylenediamine; and condensing the product with a tertiary amine to provide the quaternary ammonium compound. (Machine-translation by Google Translate, not legally binding)