| abstract |
The invention relates to new pyrano-pyrazole derivatives, a process for their preparation and their use as pesticides.n n n The new compounds of formula (I) are obtained if substituted aromatic aldehydes of the formula (II) with pyrazolinones of the formula (III) in which formulas R 'to R 4 , Y, X and n have the meaning given in the description, in the presence of a diluent and, if appropriate, in the presence of a catalyst.n n n The compounds are suitable for use as crop protection agents and are particularly notable for their high fungicidal activity. |