COMBINED METHOD OF OBTAINING 4-AMINO-2,6-DINITRO- AND 2,4,6-TRIAMINOTOLUENES Russian patent published in 2009 - IPC C07C209/36 C07C211/45 C07C211/50 

FIELD: chemistry.

SUBSTANCE: invention relates to organic chemistry and particularly to a combined method of obtaining 4-amino-2,6-dinitro- and 2,4,6-triaminotoluenes, which involves reacting a solution of 2,4,6-triaminotoluene in aliphatic alcohol with titanium trichloride in aqueous solution of hydrochloric acid in molar ratio of 2,4,6-triaminotoluene to titanium trichloride equal to 1:(8-9), with subsequent removal of aliphatic alcohol in a vacuum and extraction of the obtained 4-amino-2,6-dinitrotoluene in form of its hydrochloride through filtration. The filtrate undergoes electrochemical reduction in a diaphragm cell, which has a cathode and an anode. The catholyte is subsequently evaporated in a vacuum at temperature 50-60°C and the formed 2,4,6-triaminotoluene is extracted in form of its trihydrochloride through filtration with subsequent return of the obtained filtrate to the reaction.

EFFECT: proposed method is not explosive and virtually produces no wastes.

2 cl, 4 ex