method for preparation of pharmaceutical preparations and methods for preparation of new sulfonyl 1 - 5 (6) - substituted benzi - midazoolderivaten.

摘要

Sulphonylbenzimidazole derivatives of formula IMAGE wherein R2 represents IMAGE and the substituents R, R5 and R6 are defined in Claim 1, are prepared by reacting a corresponding sulphonylbenzimidazole which instead of the substituent R2 has a group IMAGE with a C1-C7-alkyl-magnesium halide or C1-C7-alkyl-lithium and then performing a hydrolysis. Dehydration of the compounds of formula I gives compounds which contain the group IMAGE The compounds prepared may be used for the control of viruses.