Hydrogen Bromide → 2-Bromo-1-(4-chlorophenyl)propan-1-one
Reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([C:8](=[O:11])[CH2:9][CH3:10])=[CH:4][CH:3]=1.[BrH:12].BrBr>C(O)(=O)C>[Br:12][CH:9]([CH3:10])[C:8]([C:5]1[CH:4]=[CH:3][C:2]([Cl:1])=[CH:7][CH:6]=1)=[O:11]Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 0 °C
Procedure
A mixture of 10.12 g of 4′-chloropropiophenone, 0.1 ml of hydrobromic acid (48% aqueous solution) and 60 ml of acetic acid was cooled to 0° C. under a nitrogen atmosphere. 3.1 ml of bromine was added dropwise into the mixture, then, the mixture was allowed to warm to room temperature and stirred for 1 hour. The reaction mixture was concentrated under reduced pressure to obtain 14.34 g of 2-bromo-4′-chloropropiophenone.
Workup
- temperatureto warm to room temperature
- concentrationThe reaction mixture was concentrated under reduced pressure
Sources & evidence
- ORD record
- ord-d6f6cdba77f4406085e69e5743998e8d
- Source dataset
- uspto-grants-2012_09
- Patent number
- US08258136B2
Reaction notes
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