A novel process is provided which roduces intermediates useful in the regiospecific synthes s of benzimidazole antiviral agents. The process comprises reacting a 3-fluoro-4-nitrobenzophenone with an anion of a sL fonamide to yield a 3-substitutedsulfonylamino-4-nitrobenzohenone. Novel intermediates are also disclosed.
本发明提供了一种新工艺,可生产出用于
苯并咪唑类抗病毒药物的区域特异性合成的中间体。该工艺包括使 3-
氟-4-
硝基苯甲酮与 sL 芳酰胺的阴离子反应,生成 3-取代磺酰胺基-4-
硝基苯甲酮。还公开了新的中间体。