Triethylamine → (S)-6-amino-N-[methyl(oxo)phenyl-lambda6-sulfanylidene]-5-[(trimethylsilyl)ethynyl]nicotinamide

HRID 1099652Notes

Reaction equation

HRID 1099652 reaction equation
[NH2:1][C:2]1[C:19](I)=[CH:18][C:5]([C:6]([N:8]=[S@@:9]([CH3:17])(=[O:16])[C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[O:7])=[CH:4][N:3]=1.C(N(CC)CC)C.[CH3:28][Si:29]([C:32]#[CH:33])([CH3:31])[CH3:30]>CN(C=O)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>[NH2:1][C:2]1[C:19]([C:33]#[C:32][Si:29]([CH3:31])([CH3:30])[CH3:28])=[CH:18][C:5]([C:6]([N:8]=[S@@:9]([CH3:17])(=[O:16])[C:10]2[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=2)=[O:7])=[CH:4][N:3]=1

Participants

7

Reactant 3

HCID 8471TriethylamineHCID 66111TrimethylsilylacetyleneHCID 86629469(S)-6-amino-5-iodo-N-[methyl(oxo)phenyl-lambda6-sulfanylidene]nicotinamide

Product 1

HCID 24954185(S)-6-amino-N-[methyl(oxo)phenyl-lambda6-sulfanylidene]-5-[(trimethylsilyl)ethynyl]nicotinamide

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalystHCID 6228DimethylformamideSolvent

Procedure

To a degassed solution containing (S)-6-amino-5-iodo-N-[methyl(oxo)phenyl-λ6-sulfanylidene]nicotinamide (345 mg, 0.86 mmol) in 6.0 mL DMF at room temperature was added triethylamine (0.36 mL, 2.6 mmol), trimethylsilylacetylene (0.24 mL, 1.7 mmol), dichlorobis(triphenylphosphine)palladium(II) (60 mg, 0.09 mmol), and copper(I)iodide (16 mg, 0.09 mmol). After stirring at room temperature for 1 hour, the reaction was partitioned between EtOAc and H2O. The EtOAc layer was washed with saturated NaHCO3, brine, dried with anhydrous Na2SO4 and rotary evaporated. Then added 30 mL ethyl ether to the dark oil, filtered to remove the dark precipitate. The organic extracts were concentrated and the residue was purified by chromatography (silica gel, ethyl ether/EtOAc) to the title compound as a tan foam (317 mg, 99%).

Workup

  1. customthe reaction was partitioned between EtOAc and H2O
  2. washThe EtOAc layer was washed with saturated NaHCO3, brine
  3. dry with materialdried with anhydrous Na2SO4 and rotary evaporated
  4. additionThen added 30 mL ethyl ether to the dark oil
  5. filtrationfiltered
  6. customto remove the dark precipitate
  7. concentrationThe organic extracts were concentrated
  8. customthe residue was purified by chromatography (silica gel, ethyl ether/EtOAc) to the title compound as a tan foam (317 mg, 99%)

Sources & evidence

ORD record
ord-f2e31e89c7874c23b642735b1d55eff2
Source dataset
uspto-grants-2012_03
Patent number
US08143410B2

Reaction notes

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