Water → 2-(2,4-Difluorophenoxy)-1-(4-(naphthalen-2-ylsulfonyl)piperazin-1-yl)ethanone

HRID 516992Notes

Reaction equation

HRID 516992 reaction equation
[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[OH:9].Cl[CH2:11][C:12]([N:14]1[CH2:19][CH2:18][N:17]([S:20]([C:23]2[CH:32]=[CH:31][C:30]3[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=3)[CH:24]=2)(=[O:22])=[O:21])[CH2:16][CH2:15]1)=[O:13].C(=O)([O-])[O-].[K+].[K+].O>C(#N)C>[F:1][C:2]1[CH:7]=[C:6]([F:8])[CH:5]=[CH:4][C:3]=1[O:9][CH2:11][C:12]([N:14]1[CH2:15][CH2:16][N:17]([S:20]([C:23]2[CH:32]=[CH:31][C:30]3[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=3)[CH:24]=2)(=[O:21])=[O:22])[CH2:18][CH2:19]1)=[O:13]

Participants

6

Reactant 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 1230512,4-DifluorophenolHCID 24058752-Chloro-1-[4-(naphthalene-2-sulfonyl)piperazin-1-yl]ethan-1-one2×

Product 1

HCID 401134842-(2,4-Difluorophenoxy)-1-(4-(naphthalen-2-ylsulfonyl)piperazin-1-yl)ethanoneYield 73.87%

Reagents, catalysts & solvents 1

HCID 6342AcetonitrileSolvent

Procedure

2,4-difluoro phenol (110 mg, 0.85 mmol), 2-chloro-1-(4-(naphthalen-2-ylsulfonyl)piperazin-1-yl)ethanone (compound 5, 0.3 g, 0.85 mmol) and anhydrous potassium carbonate (0.352 g, 2.55 mmol) were stirred for over night in dry acetonitrile (20 mL). The mixture was poured into a large volume of water and the solution extracted with ether. Un-reacted phenol was removed with cold 1N NaOH solution. The ether extract was dried over anhydrous sodium sulphate, filtered and concentrated under reduced pressure. The crude material was purified by re-crystallization to yield the title compound (280 mg, 73.87% yield) as an off-white solid.

Workup

  1. extractionthe solution extracted with ether
  2. customUn-reacted phenol was removed with cold 1N NaOH solution
  3. extractionThe ether extract
  4. dry with materialwas dried over anhydrous sodium sulphate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe crude material was purified by re-crystallization

Sources & evidence

ORD record
ord-2ace2b203cc049328bed182f1811f1cb
Source dataset
uspto-grants-2015_08
Patent number
US09115086B2

Reaction notes

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