METHOD FOR PREPARING 2,6-DIAMINO-4-HYDROXYTOLUENE Russian patent published in 2007 - IPC C07C215/80 C07C213/00 

Abstract RU 2296746 C1

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to the improved method for synthesis of 2,6-diamino-4-hydroxytoluene. Method involves hydrolysis of triaminotoluene sulfate in water at temperature 35-40°C followed by neutralization of hydrolyzate with alkali and soda to pH = 7-8, and isolation of ready product by extraction with ethyl acetate and evaporation of extract under vacuum. Method allows selective carrying out the process by amino-group at p-position to methyl group to obtain the end substance with high yield and high purity degree.

EFFECT: improved method of synthesis.

1 sch, 1 ex

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RU 2 296 746 C1

Authors

Shakhnes Aleksandr Khananovich

Shevelev Svjatoslav Arkad'Evich

Rusanov Aleksandr L'Vovich

Komarova Ljudmila Grigor'Evna

Dates

2007-04-10Published

2005-11-15Filed