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2 276 145

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(51)

IPC

C07D279/36(2006-01-01)

(21) (22)

Application

2005103033/04, 2005-02-07

(24)

Start date

2005-02-07

(22)

Actual filing date

2005-02-07

(45)

Published

2006-05-10

(72)

Inventor

Levdanskij Vladimir AleksandrovichPolezhaeva Natal'Ja IvanovnaVinokurova Ljudmila NikolaevnaPolezhaeva Irina ViktorovnaLevdanskij Aleksandr Vladimirovich

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Gosudarstvennyj Tekhnologicheskij Universitet"

METHOD FOR PREPARING DERIVATIVES OF 5,6-PHTHALYLPHENOTHIAZINE-S,S-DIOXIDE Russian patent published in 2006 - IPC C07D279/36

Abstract RU 2276145 C1

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to a method for preparing derivatives of 5,6-phthalylphenothiazine-S,S-dioxide. Invention describes a method for preparing 5,6-phthalylphenothiazine-S,S-dioxide of the general formula: wherein X means hydrogen, halogen atom or lower alkyl; Y means hydrogen atom or hydroxy-group. Method involves heating derivative of 2-phenylsulfonylanthraquinone in an organic solvent wherein 1-(triazene-N-sulfonate)-2-phenylsulfonylanthraquinone of the general formula: wherein X and Y have above given values is used as derivative of 2-phenylsulfonylanthraquinone that is boiled in ethylene glycol medium in the presence of alkali or heated in glycerol medium at temperature 190-230°C. Invention provides simplifying technology of the process and expanding assortment of the end products. Prepared compounds can be used in plants of aniline-dyeing industry for preparing anthraquinone dyes.

EFFECT: improved preparing method.

2 tbl, 4 ex

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RU 2 276 145 C1

Authors

Levdanskij Vladimir Aleksandrovich

Polezhaeva Natal'Ja Ivanovna

Vinokurova Ljudmila Nikolaevna

Polezhaeva Irina Viktorovna

Levdanskij Aleksandr Vladimirovich

Dates

2006-05-10—Published

2005-02-07—Filed