4,6-Dichloro-3-hydroxy-2-nitrobenzoic acid → HCID 10656625, Verbindung

HRID 659989Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 659989
[Cl:1][C:2]1[CH:10]=[C:9]([Cl:11])[C:5]([C:6]([OH:8])=[O:7])=[C:4]([N+:12]([O-])=O)[C:3]=1[OH:15]>[Fe].C(O)(=O)C>[NH2:12][C:4]1[C:3]([OH:15])=[C:2]([Cl:1])[CH:10]=[C:9]([Cl:11])[C:5]=1[C:6]([OH:8])=[O:7]

Komponenten

4

Edukt 1

HCID 106584324,6-Dichloro-3-hydroxy-2-nitrobenzoic acid

Produkt 1

HCID 10656625HCID 10656625, VerbindungAusbeute 94,3 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 23925IronKatalysatorHCID 176Acetic AcidLösungsmittel

Reaktionsbedingungen

Temperatur
80 °C

Versuchsvorschrift

A mixture of 4,6-dichloro-3-hydroxy-2-nitrobenzoic acid (1-6) (700 mg, 2.78 mmol), iron powder (400 mg, 7.16 mmol) and glacial acetic acid (13 mL) was heated at 80° C. for 50 minutes, cooled, and the solids filtered off. The filtrate was concentrated to a brown solid. Subsequent SiO2-gel column chromatography (ethyl acetate/HOAc, 100:1-100:3) gave 2-amino-4,6-dichloro-3-hydroxybenzoic acid (1-8) as a light brown solid (582 mg, 94%). —1H NMR (DMSO-d6): δ 6.68 (s); this is consistent with the literature.4

Aufarbeitung

  1. temperaturecooled
  2. filtrationthe solids filtered off
  3. concentrationThe filtrate was concentrated to a brown solid

Quellen und Nachweise

ORD-Eintrag
ord-3255be87ff0243c6aa05d3d714feb4ef
Quelldatensatz
uspto-grants-2011_12
Patentnummer
US08084459B2

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