Ethanol → Benzene, 1,3-dichloro-5-nitro-

HRID 972665

Reaktionsgleichung

Reaktionsgleichung von HRID 972665
[Cl:1][C:2]1[CH:8]=[C:7]([N+:9]([O-:11])=[O:10])[CH:6]=[C:5]([Cl:12])[C:3]=1N.C(O)C.N([O-])=O.[Na+].S(=O)(=O)(O)O>O>[Cl:1][C:2]1[CH:8]=[C:7]([N+:9]([O-:11])=[O:10])[CH:6]=[C:5]([Cl:12])[CH:3]=1

Komponenten

6

Edukt 4

HCID 702EthanolHCID 1118Sulfuric AcidHCID 74302,6-Dichloro-4-nitroanilineHCID 23668193Sodium Nitrite

Produkt 1

HCID 12064Benzene, 1,3-dichloro-5-nitro-Ausbeute 84 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

Amer. Chem. Soc., 72 (1950), 798, discloses that 2,6-dichloro-4-nitroaniline, ethanol and sodium nitrite can be reacted at the boil, in the absence of water and in the presence of concentrated sulfuric acid, to give 3,5-dichloronitrobenzene in a yield of 84%. A corresponding reaction to give the 3,5-dibromo derivative gives a yield of 91%. The process is unsatisfactory in respect of yield and purity of the end product and simple, reliable and economical operation, especially on an industrial scale.

Quellen und Nachweise

ORD-Eintrag
ord-64167b01dbd041b19e0a44155c074f12
Quelldatensatz
uspto-grants-1977_10
Patentnummer
US04053527

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