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

HRID 1159984
Notes
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Reaction equation

HRID 1159984 reaction equation
Br[C:2]1[CH:3]=[CH:4][C:5]([F:15])=[C:6]([NH:8][C:9](=[O:14])[C:10]([F:13])([F:12])[F:11])[CH:7]=1.[CH3:16][Si:17]([C:20]#[CH:21])([CH3:19])[CH3:18]>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:21]#[C:20][Si:17]([CH3:19])([CH3:18])[CH3:16])[CH:3]=[CH:4][C:5]=1[F:15])=[O:14]
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 2

HCID 66111TrimethylsilylacetyleneHCID 59511409N-(5-bromo-2-fluorophenyl)-2,2,2-trifluoroacetamide

Product 1

HCID 595113832,2,2-Trifluoro-N-{2-fluoro-5-[(trimethylsilyl)ethynyl]phenyl}acetamideYield 89%

Reagents, catalysts & solvents 3

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

Conditions

Temperature
60 °C

Procedure

To an oven-dried flask under N2 was added N-(5-bromo-2-fluorophenyl)-2,2,2-trifluoroacetamide (5.6 g, 20 mmol), anhydrous degassed THF (200 mL), dichlorobis(triphenylphosphine)palladium(II) (1.7 g, 2.5 mmol), copper(I) iodide (0.28 g, 1.5 mmol), and trimethylsilylacetylene (7.0 mL, 50 mmol). Next, TEA (27 mL, 197 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 to afford the desired product (5.3 g, 89%) as an off white solid. ES-LC/MS m/z=302 [M−H]−.

Workup

  1. customThe crude reaction mixture
  2. custompurified by column chromatography

Sources & evidence

ORD record
ord-e118f5313684465eaf8ba7af64d5137f
Source dataset
uspto-grants-2010_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07812022B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes