Dicyanobenzanthrone compounds
AssigneeCiba-Geigy Corporation
InventorHansrudolf Schwander
Life of this patent
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Abstract
The dyes of formula (1) as indicated in claim 1 are obtained by reacting 1-aminoanthraquinones with malodinitrile in the presence of titanium tetrachloride and a tertiary amine. These dyes are suitable e.g. for dyeing polyester material.
Claims14
A compound of the formula ##STR32## wherein R is hydrogen or C.sub.1 -C.sub.8 alkyl which is unsubstituted or substituted by OH, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkoxy which is substituted by OH, or by phenyl, phenoxy or phenylcarbamoyl, the phenyl moiety in each of which may be substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or phenoxy, or R is C.sub.5 -C.sub.8 cycloalkyl which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, or R is a naphthyl or phenyl radical which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, fluorine, chlorine, bromine, nitro, C.sub.1 -C.sub.4 alkylcarbonylamino or C.sub.1 -C.sub.4 alkoxycarbonyl, and
- X is hydrogen or a halogen which is in 6- or 7-position.
A process for the preparation of a compound of the formula ##STR33## wherein R is hydrogen or C.sub.1 -C.sub.8 alkyl which is unsubstituted or substituted by OH, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkoxy which is substituted by OH, or by phenyl, phenoxy or phenylcarbamoyl, the phenyl moiety in each of which may be substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or phenoxy, or R is C.sub.5 -C.sub.8 cycloalkyl which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, or R is a naphthyl or phenyl radical which is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, fluorine, chlorine, bromine, nitro, C.sub.1 -C.sub.4 alkylcarbonylamino or C.sub.1 -C.sub.4 alkoxycarbonyl and
- X is hydrogen or a halogen which is in 6- or 7-position, which comprises reacting an aminoanthraquinone of formula ##STR34## wherein X and R are as defined for formula (1), with malodinitrile in an inert solvent and in the presence of titanium tetrachloride and a tertiary amine.
Dependencies are inferred from the claim text.