METHOD FOR PREPARING BENZOFURAZANS BY REDUCTION OF BENZOFUROXANES Russian patent published in 2006 - IPC C07D271/12 

Abstract RU 2284998 C1

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to a method for synthesis of benzofurazans by reduction of benzofuroxanes in ethylene glycol medium. Sulfur is used as a reducing agent and taken in the amount 0.5-1.0 g-atom per 1 g-mole of furoxane, and the process is carried out at temperature 140-155°C. Proposed method for reduction of benzofuroxanes with sulfur in ethylene glycol is safety and economy.

EFFECT: improved method of synthesis.

4 ex

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RU 2 284 998 C1

Authors

Kondjukov Ivan Zinov'Evich

Beljaev Petr Gur'Evich

Karpychev Jurij Vladimirovich

Khisamutdinov Gil'Mutdin Khisamutdinovich

Valeshnij Sergej Ivanovich

Lajshev Viktor Zjajdullovich

Krotkova Ol'Ga Vsevolodovna

Dates

2006-10-10Published

2005-04-15Filed