1-Bromohexane → HCID 54131860, compound

HRID 846477Notes

Reaction equation

HRID 846477 reaction equation
[OH:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][CH2:9][C:10]([O:12][CH2:13][CH3:14])=[O:11])=[CH:4][C:3]=1[C:15]1[CH:20]=[C:19]([CH2:21][CH2:22][C:23]([O:25][CH2:26][CH3:27])=[O:24])[CH:18]=[CH:17][C:16]=1[OH:28].[CH2:29](Br)[CH2:30][CH2:31][CH2:32][CH2:33][CH3:34].C(=O)([O-])[O-].[K+].[K+]>[Cu].CN(C=O)C>[CH2:29]([O:1][C:2]1[CH:7]=[CH:6][C:5]([CH2:8][CH2:9][C:10]([O:12][CH2:13][CH3:14])=[O:11])=[CH:4][C:3]=1[C:15]1[CH:20]=[C:19]([CH2:21][CH2:22][C:23]([O:25][CH2:26][CH3:27])=[O:24])[CH:18]=[CH:17][C:16]=1[OH:28])[CH2:30][CH2:31][CH2:32][CH2:33][CH3:34]

Participants

6

Reactant 3

HCID 81011-BromohexaneHCID 11430Potassium CarbonateHCID 21734064HCID 21734064, compound

Product 1

HCID 54131860HCID 54131860, compoundYield 80%

Reagents, catalysts & solvents 2

HCID 23978CopperCatalystHCID 6228DimethylformamideSolvent

Procedure

To 4 ml of a DMF solution containing 97 mg (0.2513 mmol) of 2,2'-dihydroxy-5,5'-bis (2-ethoxycarbonylethyl) biphenyl and 363.7 μl (2.513 mmol) of hexyl bromide, there were added 41.6 mg (0.3109 mmol) of anhydrous potassium carbonate and a small amount of copper powder and the resulting mixture was agitated overnight at room temperature. The reaction mixture was filtered by suction through Celite to remove the solid matter and the filtrate was washed with ethyl acetate. After the solvent in the filtrate was evaporated off under reduced pressure, the evaporated residue was dissolved in chloroform. This solution was washed with dilute hydrochloric acid, dilute aqueous sodium bicarbonate, water and aqueous sodium chloride solution in this sequence and was dried by adding anhydrous sodium sulfate. The residue obtained after the solvent had been evaporated off was purified by silica gel column chromatography (with 10 g of WAKO-gel C-200, eluent: hexane and toluene/ethyl acetate of 100/1) to obtain 94.4 mg (0.2008 mmol, 80%) of 2-hexyloxy-2'-hydroxy-5,5'-bis (2ethoxycarbonylethyl) biphenyl as an oily product.

Workup

  1. filtrationThe reaction mixture was filtered by suction through Celite
  2. customto remove the solid matter
  3. washthe filtrate was washed with ethyl acetate
  4. customAfter the solvent in the filtrate was evaporated off under reduced pressure
  5. dissolutionthe evaporated residue was dissolved in chloroform
  6. washThis solution was washed with dilute hydrochloric acid, dilute aqueous sodium bicarbonate, water and aqueous sodium chloride solution in this sequence
  7. customwas dried
  8. additionby adding anhydrous sodium sulfate
  9. customThe residue obtained after the solvent
  10. customhad been evaporated off
  11. customwas purified by silica gel column chromatography (with 10 g of WAKO-gel C-200, eluent: hexane and toluene/ethyl acetate of 100/1)

Sources & evidence

ORD record
ord-389bcdcbc3824324afc7e062f7f7f0a4
Source dataset
uspto-grants-1992_08
Patent number
US05136090

Reaction notes

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