PROCESS FOR PREPARING 7-OXY-5,6-PHTHALYLPHENOXAZINE DERIVATIVES Russian patent published in 1996 - IPC

Abstract RU 2067096 C1

FIELD: organic synthesis, more particularly aniline dye industry. SUBSTANCE: product: 7-oxy-5,6- phthalylphenoxazine derivatives of formula I: wherein X is hydrogen, halogen or lower alkyl. Reagent 1: 1- (triazene-N-sulfonate)-2-phenyloxy-4-hydroxyanthraquinone of formula II: . Reaction conditions: in ethylene glycol or glycerol in the presence of alkali at 150-180 C. EFFECT: more efficient preparation process.

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RU 2 067 096 C1

Authors

Levdanskij V.A.

Polezhaeva N.I.

Vylegzhanin S.M.

Kuznetsov B.N.

Dates

1996-09-27—Published

1994-03-05—Filed