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Trimethylsilylacetylene → 2-(4-ethynyl-2-fluoroanilino)-3,4-difluoro-N-(2-hydroxyethoxy)-5-[(E)-(2-hydroxy-2-methylpropoxy)iminomethyl]benzamide

HRID 20755
Notes
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Reaction equation

HRID 20755 reaction equation
[F:1][C:2]1[C:3]([NH:24][C:25]2[CH:30]=[CH:29][C:28](I)=[CH:27][C:26]=2[F:32])=[C:4]([CH:12]=[C:13](/[CH:16]=[N:17]/[O:18][CH2:19][C:20]([OH:23])([CH3:22])[CH3:21])[C:14]=1[F:15])[C:5]([NH:7][O:8][CH2:9][CH2:10][OH:11])=[O:6].[CH:33]1C=C(S([O-])(=O)=O)C=C(P(C2C=CC=C(S([O-])(=O)=O)C=2)C2C=CC=C(S([O-])(=O)=O)C=2)[CH:34]=1.[Na+].[Na+].[Na+].N(CC)(C(C)C)C(C)C.C[Si](C#C)(C)C.[F-].C([N+](CCCC)(CCCC)CCCC)CCC>CO.[Cu]I.CCOC(C)=O>[C:33]([C:28]1[CH:29]=[CH:30][C:25]([NH:24][C:3]2[C:2]([F:1])=[C:14]([F:15])[C:13](/[CH:16]=[N:17]/[O:18][CH2:19][C:20]([OH:23])([CH3:22])[CH3:21])=[CH:12][C:4]=2[C:5]([NH:7][O:8][CH2:9][CH2:10][OH:11])=[O:6])=[C:26]([F:32])[CH:27]=1)#[CH:34]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

9

Reactant 5

HCID 66111TrimethylsilylacetyleneHCID 81531DiisopropylethylamineHCID 2724141Tetrabutylammonium FluorideHCID 6099338Trisodium 3,3',3''-phosphinetriyltris(benzene-1-sulphonate)HCID 113875063,4-difluoro-2-(2-fluoro-4-iodoanilino)-N-(2-hydroxyethoxy)-5-[(E)-(2-hydroxy-2-methylpropoxy)iminomethyl]benzamide

Product 1

HCID 11363286
2-(4-ethynyl-2-fluoroanilino)-3,4-difluoro-N-(2-hydroxyethoxy)-5-[(E)-(2-hydroxy-2-methylpropoxy)iminomethyl]benzamide
Yield 574.9%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 887MethanolSolventHCID 8857Ethyl AcetateSolvent

Procedure

(E)-3,4-difluoro-2-(2-fluoro-4-iodophenylamino)-N-(2-hydroxy-ethoxy)-5-[(2-hydroxy-2-methyl-propoxyimino)-methyl]-benzamide (200 mg, 0.35 mmol), Pd(CH3CN)2Cl2 (4.5 mg, 0.0176 mmol), triphenylphosphine-3,3′,3″-trisulfonic acid trisodium salt (25.0 mg, 0.037 mmol), N(iPr)2Et (48.0 mg, 0.37 mmol), trimethylsilyl acetylene (172 mg, 1.76 mmol), and CuI (3.4 mg, 0.0176 mmol) were stirred in MeOH at room temperature for 1 hour, and the solvent was evaporated. The resultant residue was added to THF/H2O containing tetrabutylammonium fluoride (0.35 mmol), and the mixture was stirred for 1 hour. EtOAc was added thereto, and the organic layer was washed with 0.4 N aqueous HCl, dried over Na2SO4, and evaporated. The resultant residue was purified by silica gel chromatography (CH2Cl2/MeOH as a developing solvent) to give a title compound (99 mg).

Workup

  1. customthe solvent was evaporated
  2. additionThe resultant residue was added to THF/H2O
  3. washthe organic layer was washed with 0.4 N aqueous HCl
  4. dry with materialdried over Na2SO4
  5. customevaporated
  6. customThe resultant residue was purified by silica gel chromatography (CH2Cl2/MeOH as a developing solvent)

Sources & evidence

ORD record
ord-b156245e9c11473f9faf23341a2f78ad
Source dataset
uspto-grants-2010_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US07745663B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes