The invention relates inter alia to compounds of the general formula (I)
in which the A
1
-A
4
, T, n, W, Q, R
1
and B
1
-B
4
radicals are each as defined in the description. Also described are processes for preparing the compounds of the formula (I). The inventive compounds are especially suitable for controlling insects, arachnids and nematodes in agriculture, and ectoparasites in veterinary medicine.
The present invention relates to a process for preparing compounds of the formula (I)
starting from compounds of the formula (II)
in which R
1
, R
2
and R
3
have the abovementioned meaning and where R
1
and R
3
are not simultaneously hydrogen in any compound.
The invention further provides the compounds of the formulae (IVa), (IVb), (V) and (VI) in which R
1
, R
2
, R
3
, R
5
, M and n have the abovementioned meaning.
The invention relates to antiparasitic combinations comprising inter alia to compounds of the general formula (I) in which the A1-A4, T, n, W, Q, R1 and B1 -B4 radicals are each as defined in the description. Also described are processes for preparing the compounds of the formula (I). The combinations further comprise ectoparasiciticides, anthelmintics or anti-protozoal agents. The combinations are especially suitable for controlling ectoparasites, helminths and/or protozoa on or in animals.
The present invention relates to a process for preparing compounds of the formula (I)
starting from compounds of the formula (II)
wherein R
1
, R
2
, R
3
and R
3′
are defined in according to the invention.