Water → (3Z)-5-fluoro-3-[(3-methoxy-1H-pyrrol-2-yl)methylidene]-4-{2-[(2S)-pyrrolidin-2-yl]ethynyl}-2,3-dihydro-1H-indol-2-one

HRID 380875Notes

Reaction equation

HRID 380875 reaction equation
C([N:8]1[CH2:12][CH2:11][CH2:10][C@H:9]1[C:13]#[CH:14])(OC(C)(C)C)=O.[F:15][C:16]1[C:17](I)=[C:18]2[C:22](=[CH:23][CH:24]=1)[NH:21][C:20](=[O:25])/[C:19]/2=[CH:26]\[C:27]1[NH:28][CH:29]=[CH:30][C:31]=1[O:32][CH3:33].O>CN(C=O)C.CCN(CC)CC.CCOC(C)=O.FC(F)(F)C(O)=O.C(Cl)Cl.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Cu]I>[F:15][C:16]1[C:17]([C:14]#[C:13][C@@H:9]2[CH2:10][CH2:11][CH2:12][NH:8]2)=[C:18]2[C:22](=[CH:23][CH:24]=1)[NH:21][C:20](=[O:25])/[C:19]/2=[CH:26]\[C:27]1[NH:28][CH:29]=[CH:30][C:31]=1[O:32][CH3:33]

Participants

11

Reactant 3

HCID 962WaterHCID 11030701(S)-N-Boc-2-ethynylpyrrolidineHCID 18363902(3Z)-5-fluoro-4-iodo-3-[(3-methoxy-1H-pyrrol-2-yl)methylidene]-2,3-dihydro-1H-indol-2-one2×

Product 1

HCID 23645082(3Z)-5-fluoro-3-[(3-methoxy-1H-pyrrol-2-yl)methylidene]-4-{2-[(2S)-pyrrolidin-2-yl]ethynyl}-2,3-dihydro-1H-indol-2-one

Reagents, catalysts & solvents 7

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolventHCID 6344DichloromethaneSolventHCID 6422Trifluoroacetic acidSolventHCID 8471TriethylamineSolventHCID 8857Ethyl AcetateSolvent2×

Procedure

Using Method C above, (S)-N-Boc-2-ethynyl-pyrrolidine (100 mg, 0.52 mmol) (Example 87B) was coupled with (Z)-1,3-dihydro-5-fluoro-4-iodo-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (50 mg, 0.13 mmol) (Starting Material 6) using (Ph3P)4Pd (15 mg, 0.01 mmol) and a catalytic amount of CuI in a mixture of DMF (4 mL) and Et3N (4 mL) as solvent at 80° C. for 4 hrs. Upon completion, the reaction mixture was diluted with EtOAc and extracted with H2O. The organic layer was dried over Na2SO4, concentrated and the residue was chromatographed on a silica gel column with a 40-70% EtOAc in hexanes gradient. The intermediate that was obtained from this operation was directly dissolved at 0° C., in 5 mL of a solution of 50% trifluoroacetic acid in CH2Cl2 that contained 0.2 mL of H2O and stirred for 2.5 hrs. Upon completion, the reaction mixture was diluted with EtOAc and extracted with ammonium hydroxide. The organic layer was dried over Na2SO4 and concentrated. (S)-(Z)-1,3-Dihydro-5-fluoro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-4-[(pyrrolidin-2-yl)ethynyl]-2H-indol-2-one was obtained after reverse phase column chromatography with 0-90% MeOH in H2O gradient, a silica gel column chromatography with neat THF and a precipitatiion out of THF with excess of hexanes. (Yield 8 mg, 18%).

Workup

  1. extractionextracted with H2O
  2. dry with materialThe organic layer was dried over Na2SO4
  3. concentrationconcentrated
  4. customthe residue was chromatographed on a silica gel column with a 40-70% EtOAc in hexanes gradient
  5. customThe intermediate that was obtained from this operation
  6. extractionextracted with ammonium hydroxide
  7. dry with materialThe organic layer was dried over Na2SO4
  8. concentrationconcentrated

Sources & evidence

ORD record
ord-e2eeaef8a286441da2c8d279120102e5
Source dataset
uspto-grants-2001_10
Patent number
US06303793B1

Reaction notes

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