HCID 14746277, compound → HCID 14746282, compound

HRID 2107364Notes

Reaction equation

HRID 2107364 reaction equation
[Br:1][C:2]1[CH:3]=[C:4]([CH:13](O)[CH3:14])[CH:5]=[C:6]([Br:12])[C:7]=1[O:8]C(=O)C>C1(C)C=CC=CC=1.S([O-])([O-])(=O)=O.[Cu+2]>[Br:1][C:2]1[CH:3]=[C:4]([CH:5]=[C:6]([Br:12])[C:7]=1[OH:8])[CH:13]=[CH2:14]

Participants

4

Reactant 1

HCID 14746277HCID 14746277, compound

Product 1

HCID 14746282HCID 14746282, compoundYield 70.5%

Reagents, catalysts & solvents 2

HCID 24462Copper SulfateCatalystHCID 1140TolueneSolvent

Procedure

5 g 1-(3',5'-dibromo-4-acetoxyphenyl)ethanol are dissolved in 50 g of toluene, to which mixture are added 0.25 g of anhydrous copper(II)sulfate. The mixture is refluxed for 2 hours and the toluene then removed on a rotary evaporator. A yellow oil remains which after recrystallization from petrol ether yields 2.9 g of 3,5-dibromo-4-hydroxystyrene as white crystals, mp. 75° C.

Workup

  1. temperatureThe mixture is refluxed for 2 hours
  2. customthe toluene then removed on a rotary evaporator
  3. customA yellow oil remains which after recrystallization from petrol ether

Sources & evidence

ORD record
ord-5f7c8ffcc37f460e9463d3198abce98a
Source dataset
uspto-grants-1990_06
Patent number
US04933495

Reaction notes

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