2,5 Dibromotoluene → 1,4-Dibromo-2-(bromomethyl)benzene

HRID 1987451

Reaktionsgleichung

Reaktionsgleichung von HRID 1987451
[Br:1][C:2]1[CH:3]=[C:4]([CH3:9])[C:5]([Br:8])=[CH:6][CH:7]=1.[Br:10]Br>>[Br:1][C:2]1[CH:3]=[C:4]([C:5]([Br:8])=[CH:6][CH:7]=1)[CH2:9][Br:10]

Komponenten

3

Edukt 2

HCID 120062,5 DibromotolueneHCID 24408Bromine

Produkt 1

HCID 53260381,4-Dibromo-2-(bromomethyl)benzene

Versuchsvorschrift

In a 250 ml three-necked round-bottom flask equipped with a reflux condenser, thermometer, dropping funnel with pressure-equalizing, and magnetic stirring bar, and containing 74.9 g (0.30 mol) of 3,6-dibromotoluene, 15.5 ml (47.9 g, 0.30 mmol) of bromine was added dropwise under exposure to 500 W lamp for 3 hours at 190° C. The resulting mixture was cooled to room temperature. Fractional distillation gave colorless liquid, b.p. 132-135° C./3 mm Hg. Yield 84.3 g (85%).

Aufarbeitung

  1. customIn a 250 ml three-necked round-bottom flask equipped with a reflux condenser
  2. additionwas added dropwise under exposure to 500 W lamp for 3 hours at 190° C
  3. distillationFractional distillation
  4. customgave colorless liquid, b.p. 132-135° C./3 mm Hg

Quellen und Nachweise

ORD-Eintrag
ord-2a026eff71f54a3f9b4254f4cc11eeb9
Quelldatensatz
uspto-grants-2009_06
Patentnummer
US07550544B2

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