Water → 2-Bromo-4'-(methylsulfonyl)acetophenone

HRID 497172

Reaction equation

HRID 497172 reaction equation
[CH3:1][C:2]([C:4]1[CH:9]=[CH:8][C:7]([S:10]([CH3:13])(=[O:12])=[O:11])=[CH:6][CH:5]=1)=[O:3].[Cl-].[Al+3].[Cl-].[Cl-].[Br:18]Br.O>C(Cl)(Cl)Cl>[Br:18][CH2:1][C:2]([C:4]1[CH:5]=[CH:6][C:7]([S:10]([CH3:13])(=[O:12])=[O:11])=[CH:8][CH:9]=1)=[O:3]

Participants

6

Reactant 4

HCID 962WaterHCID 24408BromineHCID 825294-MethylsulfonylacetophenoneHCID 6451240Aluminum(III) Chloride

Product 1

HCID 7358232-Bromo-4'-(methylsulfonyl)acetophenoneYield 78%

Reagents, catalysts & solvents 1

HCID 6212ChloroformSolvent2×

Procedure

To a solution of 4-(methylsulfonyl)acetophenone (4.85 g, 24.5 mmol) in CHCl3 (70 ml) was added aluminum chloride (1 mg) and bromine (1.1 mL) in CHCl3 (8.5 mL) dropwise. The mixture was stirred overnight, and poured into water. The whole was extracted with ethyl acetate (50 mL×2), the combined organic layer was dried over MgSO4, and concentrated in vacuo. The resulting residue was recrystallized from ethyl acetate/hexane (1/1) to give the subtitle compound (5.28 g, 78% yield).

Workup

  1. extractionThe whole was extracted with ethyl acetate (50 mL×2)
  2. dry with materialthe combined organic layer was dried over MgSO4
  3. concentrationconcentrated in vacuo
  4. customThe resulting residue was recrystallized from ethyl acetate/hexane (1/1)

Sources & evidence

ORD record
ord-14422ff21bb84ea78959e159be1bdf27
Source dataset
uspto-grants-2005_09
Patent number
US06949536B2

Linked notes

Loading…