Hydrochloric Acid → 4-((5-Bromo-2-chlorophenyl)methyl)phenol

HRID 500323Notes

Reaction equation

HRID 500323 reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([Cl:8])=[C:4]([CH2:9][C:10]2[CH:15]=[CH:14][C:13]([O:16]C)=[CH:12][CH:11]=2)[CH:3]=1.B(Br)(Br)Br.C(=O)([O-])[O-].[K+].[K+].Cl>ClCCl>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([Cl:8])=[C:4]([CH:3]=1)[CH2:9][C:10]1[CH:15]=[CH:14][C:13]([OH:16])=[CH:12][CH:11]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 11430Potassium CarbonateHCID 25134Boron tribromideHCID 223285944-Bromo-1-chloro-2-(4-methoxybenzyl)benzene

Product 1

HCID 574237514-((5-Bromo-2-chlorophenyl)methyl)phenol

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

A solution of 14.8 g 4-bromo-1-chloro-2-(4-methoxy-benzyl)-benzene in 150 ml dichloromethane is cooled in the ice bath. Then 50 ml of a 1 M solution of boron tribromide in dichloromethane are added, and the solution is stirred for 2 h at ambient temperature. The solution is then cooled in the ice bath again, and saturated potassium carbonate solution is added dropwise. At ambient temperature the mixture is adjusted with aqueous 1 M hydrochloric acid to a pH of about 1, the organic phase is separated off and the aqueous phase is extracted another three times with ethyl acetate. The combined organic phases are dried over sodium sulphate, and the solvent is removed completely.

Workup

  1. customAt ambient temperature
  2. customthe organic phase is separated off
  3. extractionthe aqueous phase is extracted another three times with ethyl acetate
  4. dry with materialThe combined organic phases are dried over sodium sulphate
  5. customthe solvent is removed completely

Sources & evidence

ORD record
ord-7a5609b5a1e6467baef6ebdcbe01b257
Source dataset
uspto-grants-2010_08
Patent number
US07772191B2

Reaction notes

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