HuagongsheHuagongshe Chemie-Druckbericht · Nur für Forschungszwecke
Nitric Acid → Phenol, 2,4-dichloro-3-methyl-6-nitro-
Beteiligte Stoffe
| Rolle | Name | HCID | Einwaage |
|---|---|---|---|
| Edukt | Nitric Acid | HCID 944 | — |
| Edukt | Sulfuric Acid | HCID 1118 | — |
| Edukt | 4-Chloro-3-methylphenol | HCID 1732 | — |
| Edukt | Benzenesulfonic acid, 3,5-dichloro-2-hydroxy-4-methyl- | HCID 3085507 | — |
| Edukt | 5-Chloro-2-hydroxy-4-methylbenzenesulfonic acid | HCID 11042323 | — |
| Produkt | Phenol, 2,4-dichloro-3-methyl-6-nitro- | HCID 170222 | — |
| Produkt | 5-Chloro-2-hydroxy-4-methylbenzenesulfonic acid | HCID 11042323 | — |
Reaktionsschritte
2-NITRO-4,6-DICHLORO-5-METHYLPHENOL IS PREPARED BY THE SULFONATION OF 4-CHLORO-5-METHYLPHENOL TO FORM 2-SULFO-4-CHLORO-5-METHYLPHENOL WHICH IS CHLORINATED TO 2-SULFO-4,6-DICHLORO-5-METHYLPHENOL WHICH IS IN TURN REACTED WITH NITRIC ACID TO FORM THE DESIRED PRODUCT. The sulfonation is carried out with concentrated sulfuric acid at elevated temperatures to form 2-sulfo-4-chloro-5-methylphenol. Thereafter the reaction mixture is diluted with water to a sulfuric acid content of 20-30%. The resulting 2-sulfo-4-chloro-5-methylphenol is chlorinated with chlorine at elevated temperature and normal or elevated pressures to form 2-sulfo-4,6-dichloro-5-methylphenol which is then reacted with nitric acid.
Herkunft & Nachweise
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patentnummer | US04038328 |
| Quelldatensatz | uspto-grants-1977_07 |
| ORD ID | ord-8f514fe2b26543cfad44a0bd46bdb41c |
| Quellennotiz | uspto-grants-1977_07 |