Potassium Fluoride → N-[2-Bromo-4-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-6-(trifluoromethyl)phenyl]-2-fluoro-3-nitrobenzamide

HRID 590939Notes

Reaction equation

HRID 590939 reaction equation
[Br:1][C:2]1[CH:7]=[C:6]([C:8]([F:17])([C:13]([F:16])([F:15])[F:14])[C:9]([F:12])([F:11])[F:10])[CH:5]=[C:4]([C:18]([F:21])([F:20])[F:19])[C:3]=1[NH:22][C:23](=[O:34])[C:24]1[CH:29]=[CH:28][CH:27]=[C:26]([N+:30]([O-:32])=[O:31])[C:25]=1Cl.[F-:35].[K+]>CN(C=O)C>[Br:1][C:2]1[CH:7]=[C:6]([C:8]([F:17])([C:13]([F:16])([F:15])[F:14])[C:9]([F:12])([F:11])[F:10])[CH:5]=[C:4]([C:18]([F:21])([F:20])[F:19])[C:3]=1[NH:22][C:23](=[O:34])[C:24]1[CH:29]=[CH:28][CH:27]=[C:26]([N+:30]([O-:32])=[O:31])[C:25]=1[F:35]

Participants

4

Reactant 2

HCID 522689Potassium FluorideHCID 86656684HCID 86656684, compound

Product 1

HCID 86656683N-[2-Bromo-4-(1,1,1,2,3,3,3-heptafluoropropan-2-yl)-6-(trifluoromethyl)phenyl]-2-fluoro-3-nitrobenzamideYield 20%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
130 °C

Procedure

To a solution of N-(2-bromo-4-(heptafluoropropan-2-yl)-6-(trifluoromethyl)phenyl)-2-chloro-3-nitrobenzamide 4.89 g (8.27 mmol) in 50 ml of anhydrous DMF was added 2.40 g (41.3 mmol) of potassium fluoride (spray-dried product) under a flow of nitrogen, followed by stirring at 130° C. for 10 hours. Liquid separation was carried out by adding ethyl acetate, hexane, and water to the reaction mixture, and then the organic layer was washed with water and saturated brine, and dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure and the obtained residue was purified by silica gel column chromatography (eluent solvent; hexane:ethyl acetate=10:1) to prepare 0.940 g (yield 20%) of a target compound.

Workup

  1. customLiquid separation
  2. additionby adding ethyl acetate, hexane, and water to the reaction mixture
  3. washthe organic layer was washed with water and saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customThe solvent was evaporated under reduced pressure
  6. customthe obtained residue was purified by silica gel column chromatography (eluent solvent; hexane:ethyl acetate=10:1)

Sources & evidence

ORD record
ord-efdffd6588a04dafb9d90a538054d813
Source dataset
uspto-grants-2016_01
Patent number
US09237745B2

Reaction notes

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