Triethylamine → 2,2,2-Trifluoro-N-{2-(methyloxy)-5[(trimethylsilyl)ethynyl]phenyl}-acetamide

HRID 1159954Notes

Reaction equation

HRID 1159954 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]([O:15][CH3:16])=[C:6]([NH:8][C:9](=[O:14])[C:10]([F:13])([F:12])[F:11])[CH:7]=1.[CH3:17][Si:18]([C:21]#[CH:22])([CH3:20])[CH3:19].C(N(CC)CC)C>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.[Cu]I.C1COCC1>[F:11][C:10]([F:13])([F:12])[C:9]([NH:8][C:6]1[CH:7]=[C:2]([C:22]#[C:21][Si:18]([CH3:20])([CH3:19])[CH3:17])[CH:3]=[CH:4][C:5]=1[O:15][CH3:16])=[O:14]

Participants

7

Reactant 3

HCID 8471TriethylamineHCID 66111TrimethylsilylacetyleneHCID 22636844N-[5-bromo-2-(methyloxy)phenyl]-2,2,2-trifluoroacetamide

Product 1

HCID 595114262,2,2-Trifluoro-N-{2-(methyloxy)-5[(trimethylsilyl)ethynyl]phenyl}-acetamideYield 43.1%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalystHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
60 °C

Procedure

To an oven-dried flask under N2 was added N-[5-bromo-2-(methyloxy)phenyl]-2,2,2-trifluoroacetamide (1.53 g, 0.005 mol), anhydrous degassed THF (100 mL), dichlorobis(triphenylphosphine)palladium(II) (0.45 g, 0.6 mmol), copper(I) iodide (73 mg, 0.38 mmol), and trimethylsilylacetylene (1.26 g, 13 mmol). Next, triethylamine (5.19 g, 50 mmol) was added dropwise and the resulting mixture was heated at 60° C. overnight. The crude reaction mixture was adsorbed to silica gel and purified by column chromatography (0-10% EtOAc in hexanes) to afford the desired product (0.68 g, 42%) as an off white solid. ESIMS (M−H)−=314.

Workup

  1. customThe crude reaction mixture
  2. custompurified by column chromatography (0-10% EtOAc in hexanes)

Sources & evidence

ORD record
ord-52f25a6c08e84d64bdd6138e4a6216cc
Source dataset
uspto-grants-2010_10
Patent number
US07812022B2

Reaction notes

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