FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to an improved method for synthesis of 2,4,6-triaminotoluene as stable sulfate or phosphate. Method involves hydrogenation of 2,4,6-trinitrotoluene with hydrogen on palladium catalyst in an organic solvent medium wherein the hydrogenation reaction of 2,4,6-trinitrotoluene is carried out under atmosphere pressure with addition of activated carbon in the amount 2-10% of mass of 2,4,6-tyrinitrotoluene and isolation of 2,4,6-triaminotoluene. For reduction of 2,4,6-trinitrotoluene catalyst of preceding reduction reaction is used with addition of 2-10% of fresh catalyst. Method allows decreasing amount of used catalyst and increasing yield of the end substance.
EFFECT: improved method of synthesis.
3 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| COMBINED METHOD OF OBTAINING 4-AMINO-2,6-DINITRO- AND 2,4,6-TRIAMINOTOLUENES | 2008 |
|
RU2368598C1 |
| METHOD OF OBTAINING 4-HYDROXYLAMINO-2,6-DINITROTOLUENE AND 3,5 DINITRO-1 - HYDROXYLAMINOBENZOL | 2007 |
|
RU2337092C1 |
| METHOD OF SYNTHESIS OF 1-ETHYL-2-AMINOMETHYLPYRROLIDINE | 1995 |
|
RU2081111C1 |
| MONO- AND DISAZO-DERIVATIVES ON THE BASE OF 2,4,6-TRIAMINOTOLUENE AS AZO DYES AND METHOD OR THEIR PRODUCTION | 1994 |
|
RU2102415C1 |
| AROMATIC NITRO COMPOUND HYDROGENATION CATALYST | 1999 |
|
RU2156654C1 |
| METHOD FOR PREPARING 2,4,6-TRIHYDROXYTOLUENE | 2005 |
|
RU2292329C1 |
| METHOD OF OBTAINING 5(6)-AMINO-2-(4-AMINOPHENYL)BENZIMIDAZOLE FROM 2',4,4'-TRINITROBENZANILIDE | 2013 |
|
RU2547261C2 |
| METHOD OF PRODUCING O-CHLOROANILINE | 2015 |
|
RU2606394C1 |
| PROCESS FOR PREPARING 2-( 4′-ISOBUTYLPHENYL) PROPIONIC ACID (IBUPROPHENE) OR ITS VERSIONS | 1988 |
|
RU2005715C1 |
| METHOD FOR PRODUCTION OF ESTERS OF AMINOBENZOIC ACIDS | 1995 |
|
RU2096403C1 |
