Nine 1,3-dichlorobenzene congeners were selected as model compds. to assess the relative rates of proton abstraction from 4- and 5-positions ("ortho" vs. "meta" metalation). Using lithium 2,2,6,6-tetramethylpiperidide as the basic reagent, the chlorine-adjacent 4-position underwent metalation exclusively. In contrast, attack at the chlorine-remote 5-position became significant even in the case of moderately
The present application relates to active compound combinations of pyrazin-2-ylpyrazoles (component A) with at least one further ectoparasiticide or synergists (component B), and to products comprising such active compound combinations. These active compound combinations are suitable for controlling animal pests in the field of veterinary medicine.
The present application relates to active compound combinations of pyrazin-2-ylpyrazoles (component A) with at least one further ectoparasiticide or synergists (component B), and to products comprising such active compound combinations. These active compound combinations are suitable for controlling animal pests in the field of veterinary medicine.