FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to a method for synthesis of 2,4,6-trihydroxytoluene (methylphloroglucinol). Method is carried out by hydrolysis of 2,4,6-triaminotoluene salt aqueous solution in acid medium in boiling in the presence of ammonium salt wherein chloride, fluoride, sulfate ammonium are taken as ammonium salt. As 2,4,6-triaminotoluene salt the method involves using hydrochloride or sulfate but sulfate is used preferably. The yield of the end compound is above 75% with the high purity degree. Synthesized compound can be used as a component of compositions used in thermal impregnation and isolation of electric engine winding, for preparing thermostable thermoreactive resins or photosensitive and lithographic plates. Invention provides reducing period of the process and simplifying purification of the end compound.
EFFECT: improved method of synthesis.
3 cl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREPARING 2,6-DIAMINO-4-HYDROXYTOLUENE | 2005 |
|
RU2296746C1 |
| METHOD FOR PREPARING 2,4,6-TRIAMINOTOLEUNE AS SULFATE OR PHOSPHATE | 2005 |
|
RU2297408C1 |
| COMBINED METHOD OF OBTAINING 4-AMINO-2,6-DINITRO- AND 2,4,6-TRIAMINOTOLUENES | 2008 |
|
RU2368598C1 |
| 2,4,6-TRIAZIDOTOLUENE AND SYNTHESIS METHOD THEREOF | 2009 |
|
RU2430080C2 |
| MONO- AND DISAZO-DERIVATIVES ON THE BASE OF 2,4,6-TRIAMINOTOLUENE AS AZO DYES AND METHOD OR THEIR PRODUCTION | 1994 |
|
RU2102415C1 |
| 1,3,5-TRIHYDROXYBEZENE SYNTHESIS METHOD | 2008 |
|
RU2389716C2 |
| METHOD OF PREPARING PHENYLTRIFLUOROETHYLAMINES OR THEIR SALTS | 0 |
|
SU791234A3 |
| PROCESS FOR PREPARING PHENYLACETIC ACID DERIVATIVES OR THEIR SALTS | 0 |
|
SU1053743A3 |
| METHOD OF PRODUCING DERIVATIVES OF BIS-(BENAMIDO)-BENZOL OR SALTS THEREOF | 0 |
|
SU691083A3 |
| METHOD OF PRODUCING (+)-4-DI(H-PROPYL)AMINO-6-CARBAMYL-1,3,4,5-TETRAHYDROBENZO C,D -INDOLE OR ITS PHARMACEUTICALLY ACCEPTABLE SALT | 0 |
|
SU1375128A3 |
