Process for the preparation of fluorine-substituted aminobenzodioxoles and -benzodioxanes and new intermediates
AssigneeBayer Aktiengesellschaft
InventorsPeter Andres, Albrecht Marhold
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Abstract
According to the invention, a new process for the preparation of fluorine-substituted aminobenzodioxoles and -benzodioxanes of the formula (I) ##STR1## in which n represents an integer 1 or 2, has been found, in which fluorine-substituted nitro-halogeno-benzodioxoles and -benzodioxanes, which are likewise new, are hydrogenated. The novel intermediates are obtained from fluorine-substituted benzodioxoles and benzodioxanes by halogenation and subsequent nitration. The amino compounds are important starting materials for highly active biocides.
Claims2
Fluorine-substituted nitro-benzodioxoles and -benzodioxanes of the formula (IV) ##STR13## in which Hal represents halogen and n represents an integer 1 or 2.
Process for the preparation of fluorine-substituted nitro-benzodioxoles and -benzodioxanes of the formula (IV) ##STR14## in which Hal represents a halogen atom and n represents an integer 1 or 2, characterised in that fluorine-substituted benzodioxoles or benzodioxanes of the formula (II) ##STR15## in which n has the abovementioned meaning, are halogenated in the 1st step with elemental halogen and nitrated in the 2nd step.
Dependencies are inferred from the claim text.