Potassium tert-butoxide → 1,2-Dichloro-4-{1-[(4-methoxyphenoxy)methyl]ethenyl}benzene

HRID 1022593Notes

Reaction equation

HRID 1022593 reaction equation
[CH3:1]C(C)([O-])C.[K+].[Cl:7][C:8]1[CH:9]=[C:10]([C:15](=O)[CH2:16][O:17][C:18]2[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[CH:20][CH:19]=2)[CH:11]=[CH:12][C:13]=1[Cl:14]>[Br-].C[P+](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.C1COCC1.O>[Cl:14][C:13]1[CH:12]=[CH:11][C:10]([C:15]([CH2:16][O:17][C:18]2[CH:23]=[CH:22][C:21]([O:24][CH3:25])=[CH:20][CH:19]=2)=[CH2:1])=[CH:9][C:8]=1[Cl:7]

Participants

6

Reactant 2

HCID 23665647Potassium tert-butoxideHCID 43413487HCID 43413487, compound

Product 1

HCID 669753991,2-Dichloro-4-{1-[(4-methoxyphenoxy)methyl]ethenyl}benzeneYield 31.7%

Reagents, catalysts & solvents 3

HCID 74505Methyltriphenyliphosphonium bromideCatalystHCID 962WaterSolventHCID 8028TetrahydrofuranSolvent2×

Procedure

To a solution of methyltriphenylphosphonium bromide (60.3 g) in THF (800 mL) was added potassium tert-butoxide (20.7 g), and the mixture was stirred at room temperature for 1 hr. To the reaction mixture was added dropwise a solution of 1-(3,4-dichlorophenyl)-2-(4-methoxyphenoxy)ethanone (48 g) in THF (400 ml), and the mixture was stirred at room temperature for 3 hr. The reaction mixture was diluted with water, and the mixture was extracted with ethyl acetate. The obtained extract was washed with brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure. The obtained residue was purified by silica gel column chromatography (ethyl acetate/hexane) to give the title compound (15.1 g).

Workup

  1. stirringthe mixture was stirred at room temperature for 3 hr
  2. extractionthe mixture was extracted with ethyl acetate
  3. extractionThe obtained extract
  4. washwas washed with brine
  5. dry with materialdried over anhydrous magnesium sulfate
  6. customThe solvent was evaporated under reduced pressure
  7. customThe obtained residue was purified by silica gel column chromatography (ethyl acetate/hexane)

Sources & evidence

ORD record
ord-7abfeb10c2ec4f4aa95fd94669af97b7
Source dataset
uspto-grants-2014_05
Patent number
US08722662B2

Reaction notes

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