The present invention relates to pyridazinylmethyl sulfonamides of formula I
wherein R
a
, n, R
1
, R
2
, R
3
, A, Y and Het are as defined in the claims, to the N-oxides, and salts thereof and their use for combating harmful fungi, and also to compositions and seed comprising at least one such compound. The invention also relates to a process and intermediates for preparing these compounds.
The present invention relates to pyridazinylmethyl sulfonamides of formula (I) wherein Ra, n, R1, R2, R3, A, Y and Het are as defined in the claims, to the N-oxides, and salts thereof and their use for combating harmful fungi, and also to compositions and seed comprising at least one such compound. The invention also relates to a process and intermediates for preparing these compounds.