Dimethylformamide → 4-Bromo-1,2-bis[(2-ethylhexyl)oxy]benzene

HRID 548509Notes

Reaction equation

HRID 548509 reaction equation
C1C(=O)N([Br:8])C(=O)C1.[CH2:9]([CH:11]([CH2:29][CH2:30][CH2:31][CH3:32])[CH2:12][O:13][C:14]1[CH:19]=[CH:18][CH:17]=[CH:16][C:15]=1[O:20][CH2:21][CH:22]([CH2:27][CH3:28])[CH2:23][CH2:24][CH2:25][CH3:26])[CH3:10].CN(C=O)C>O>[Br:8][C:18]1[CH:17]=[CH:16][C:15]([O:20][CH2:21][CH:22]([CH2:27][CH3:28])[CH2:23][CH2:24][CH2:25][CH3:26])=[C:14]([O:13][CH2:12][CH:11]([CH2:9][CH3:10])[CH2:29][CH2:30][CH2:31][CH3:32])[CH:19]=1

Participants

5

Reactant 3

HCID 6228DimethylformamideHCID 67184N-bromobutanimide2×HCID 14645488HCID 14645488, compound

Product 1

HCID 178485884-Bromo-1,2-bis[(2-ethylhexyl)oxy]benzene

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Solid NBS (26.21g, 0.147 mol) was added to an ice cold CH2Cl2 solution (250 mL) of 1b under N2 in the absence of light. Just enough DMF was added (30 mL) to dissolve the NBS. The reaction mixture was allowed to warm to room temperature and then stirred for 12 h. The mixture was then poured into water. The organic layer was washed with a saturated LiCl solution and water. After drying with MgSO4 the solvent was removed under reduced pressure. The remaining oil was distilled (160° C./0.01 mmHg) to yield 4-bromo-1,2-di(2-ethylhexyloxy)benzene (2b) in 96% yield a colorless oil.

Workup

  1. washThe organic layer was washed with a saturated LiCl solution and water
  2. dry with materialAfter drying with MgSO4 the solvent
  3. customwas removed under reduced pressure
  4. distillationThe remaining oil was distilled (160° C./0.01 mmHg)

Sources & evidence

ORD record
ord-a99fdd18023c4cdf9c7c32264e1d6e44
Source dataset
uspto-grants-2011_05
Patent number
US07943062B2

Reaction notes

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