KR830005307A - Method for preparing basic oxazine dyes - Google Patents

Abstract

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Description

Method for preparing basic oxazine dyes

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Claims (1)

As described in the text, the reaction between the nitroso compound represented by the following general formula (II) and the aminophenol represented by the general formula (III) to the nitroso compound represented by the general formula (IV) and the general formula ( Water and / or organic media in which the reaction with the compound represented by V) is either present or absent with zinc chloride or other metal salts, neutral or by addition of diacids such as sodium, potassium or ammonium In performing, at room temperature without heating, acetic anhydride and other acid anhydrides represented by the following general formula (VI) are generated at least in a quantity contained in the stoichiometry or generated in the reaction zone and baked. Method for producing a basic oxazine dye, characterized in that to prepare a dye represented by the general formula (I). In the formula above R _{1 is a} hydrogen atom, an unsubstituted alkyl group, alkenyl group or aralkyl group, R _{2 is a} substituted or unsubstituted alkyl group, alkenyl group, cycloalkyl group, aryl group or aralkyl group, R _{3 is a} hydrogen atom, an alkyl group or an alkoxy group, R ' _{3 is a} hydrogen atom or an alkyl group, R _{4 is a} hydrogen atom, a substituted or unsubstituted alkyl group, an aliphatic or aralkyl group, R _{5 is a} hydrogen atom or a substituted or unsubstituted alkyl group, R _{6 is a} hydrogen atom, an alkyl group or an alkoxy group, R` <sub>6 is a</sub> hydrogen atom or an alkyl group, R <sub>7</sub> ; A hydrogen atom, an alkyl group or a group which forms a benzene ring together with R <sub>6</sub> , R <sub>7</sub> `is a hydrogen atom or an alkyl group, R _{8 is a} substituted or unsubstituted alkyl group, R _{9 is an} alkoxy group or an amino group or an amino group substituted with one or two alkyl groups, X : Display the negative ion, the negative ion is YCOO And or Y'COO In the case of the nitroso compound (II) or (IV) is not used in the form of an acid salt for the reaction, Y and Y 'are both different from or identical to each other, and each is linear or branched and has an alkyl group containing 1 to 6 carbon atoms or an alkyl group or halogen atom and nitro group containing 1 to 6 carbon atoms as a substituent , An alkyl group, an alkoxy group and the like, and a phenyl group containing three or less substituents. Any one of Y and Y 'may represent a hydrogen atom. ※ Note: The disclosure is based on the initial application.