Hydrogen Bromide → 2-Bromo-1-(6-bromonaphthalen-2-yl)ethanone

HRID 79782Notes

Reaction equation

HRID 79782 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][CH:11]=1)[CH:8]=[C:7]([C:12](=[O:16])[CH:13]=[N+]=[N-])[CH:6]=[CH:5]2.[BrH:17].C([O-])(O)=O.[Na+]>C(OCC)(=O)C>[Br:17][CH2:13][C:12]([C:7]1[CH:6]=[CH:5][C:4]2[C:9](=[CH:10][CH:11]=[C:2]([Br:1])[CH:3]=2)[CH:8]=1)=[O:16]

Participants

5

Reactant 3

HCID 260Hydrogen BromideHCID 516892Sodium BicarbonateHCID 768188121-(6-Bromonaphthalen-2-yl)-2-diazoethanone

Product 1

HCID 126988982-Bromo-1-(6-bromonaphthalen-2-yl)ethanone

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent

Procedure

1-(6-Bromonaphthalen-2-yl)-2-diazoethanone (34.7 g) were dissolved in ethyl acetate (500 mL), and hydrobromic acid solution (21.1 mL, 5.7 M in acetic acid) was added at 0° C. Reaction mixture was stirred 3 hours, NaHCO3 solution (200 mL) was added, and mixture was stirred 10 minutes. Ethyl acetate solution was extracted twice with NaHCO3 solution (50 mL), once with brine (50 mL), and evaporated under vacuum, giving 2-bromo-1-(6-bromonaphthalen-2-yl)-ethanone (33.0 g, crude) as a tan solid.

Workup

  1. customReaction mixture
  2. stirringmixture was stirred 10 minutes
  3. extractionEthyl acetate solution was extracted twice with NaHCO3 solution (50 mL), once with brine (50 mL)
  4. customevaporated under vacuum

Sources & evidence

ORD record
ord-51779cf003de4b249e15b3e896650d52
Source dataset
uspto-grants-2014_09
Patent number
US08841278B2

Reaction notes

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