Nitric Acid → Methyl 5-bromo-2-methyl-3-nitrobenzoic acid

HRID 2208748

Reaktionsgleichung

Reaktionsgleichung von HRID 2208748
[Br:1][C:2]1[C:3]([CH3:12])=[CH:4][C:5]([CH3:11])=[C:6]([CH:10]=1)[C:7]([OH:9])=[O:8].OS(O)(=O)=O.[N+:18]([O-])([OH:20])=[O:19]>>[Br:1][C:2]1[C:3]([CH3:12])=[C:4]([N+:18]([O-:20])=[O:19])[C:5]([CH3:11])=[C:6]([CH:10]=1)[C:7]([OH:9])=[O:8]

Komponenten

4

Edukt 3

HCID 944Nitric AcidHCID 1118Sulfuric Acid2×HCID 5557655-Bromo-2,4-dimethylbenzoic acid

Produkt 1

HCID 86623945Methyl 5-bromo-2-methyl-3-nitrobenzoic acidAusbeute 91 %

Reaktionsbedingungen

Temperatur
-10 °C

Versuchsvorschrift

5-Bromo-2,4-dimethylbenzoic acid (12 g, 52.17 mmol) was added to cooled conc. H2SO4 (48 mL) at −10° C. lot wise. After 10 minutes nitrating mixture {prepared as mixing Conc. HNO3 (6 mL) with conc.H2SO4 (24 mL)} was added drop wise at −10° C. Resulting reaction mass was stirred at −10° C. for 30 minutes. On completion, reaction mixture was poured on ice cold water, solid precipitated was filtered, washed with water and dried under vacuum giving desired compound (13 g, 91%).

Aufarbeitung

  1. custommixture {prepared
  2. customResulting
  3. customreaction mass
  4. customOn completion, reaction mixture
  5. additionwas poured on ice cold water, solid
  6. customprecipitated
  7. filtrationwas filtered
  8. washwashed with water
  9. customdried under vacuum

Quellen und Nachweise

ORD-Eintrag
ord-605d50c7682244c88c1ca871eeafdb64
Quelldatensatz
uspto-grants-2016_06
Patentnummer
US09376422B2

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