FIELD: chemistry.
SUBSTANCE: invention relates to organic chemistry, specifically to a method for synthesis of compounds of general formula given below, wherein R1 denotes 2-COOH, 4-COOH, 2-NO2, 4-NO2, 2-MeO, 4-MeO and 4-C4H9, from aromatic amines in aqueous medium. Method comprises diazotisation and azo coupling at temperature 18-20 °C. Method further includes, in distilled water as initial substrate, dissolving aromatic amine and p-toluene sulphonic acid, adding sodium nitrite and then 10 % aqueous alkaline solution of 2-naphthol, after which reaction mass is treated with hydrochloric acid to pH 4-5, precipitate is filtered and washed with distilled water.
EFFECT: method enables to obtain desired azo product with high output without using organic solvents.
1 cl, 1 tbl, 8 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING M-CHLOROBENZOPHENONE | 2008 |
|
RU2361854C1 |
| METHOD OF PRODUCING SUBSTITUTED AROMATIC COMPOUNDS | 2015 |
|
RU2584423C1 |
| METHOD OF OBTAINING META-CHLOROBENZOPHENONE AS HALF-PRODUCT OF ANTICONVULSIVE MEDICATION "HALODIF" | 2012 |
|
RU2510638C1 |
| AGENT FOR REDUCING BLOOD PLASMA CHOLESTEROL AND TRIGLYCERIDES | 2013 |
|
RU2545693C1 |
| DYES BASED ON 3,5-DINITROANILINE AND 2-AMINO-4,6-DINITROTOLUENE | 2004 |
|
RU2273652C1 |
| METHOD OF PRODUCING DIRECT BLACK DYE C | 2008 |
|
RU2413744C2 |
| METHOD FOR SYNTHESIS OF 2,1-DIAZONAPHTHALINONE-CHLORIDE-5-SULPHONIC ACID | 2009 |
|
RU2409560C2 |
| SAFE METHOD FOR PRODUCING 2-METHYL-5-NITROTHETRAZOLE AND A MICROREACTOR FOR ITS IMPLEMENTATION | 2018 |
|
RU2675599C1 |
| METHOD OF SYNTHESIS OF DERIVATIVES OF 3-AMINO-2-MERCAPTOBENZOIC ACID (VARIANTS), DERIVATIVES OF BENZOTHIAZOLE AND METHOD OF THEIR SYNTHESIS | 1996 |
|
RU2176241C2 |
| 3-PHENOXYPHENYL-CONTAINING 1,3-DIKETONES AS STARTING COMPOUNDS FOR PRODUCING CHELATE COMPLEXES THEREOF WITH COPPER (II) IONS AND METHOD OF PRODUCING 3-PHENOXYPHENYL-CONTAINING 1,3-DIKETONES | 2012 |
|
RU2475473C1 |
