Isatin → N-[3-(4-benzyloxyphenyl)phenyl]isatin

HRID 1431916

Reaktionsgleichung

Reaktionsgleichung von HRID 1431916
[NH:1]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[C:4](=[O:5])[C:2]1=[O:3].[H-].[Na+].[CH2:14]([O:21][C:22]1[CH:27]=[CH:26][C:25]([C:28]2[CH:33]=[CH:32][CH:31]=[C:30](Br)[CH:29]=2)=[CH:24][CH:23]=1)[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1>CN(C=O)C.[Cu](I)I>[CH2:14]([O:21][C:22]1[CH:23]=[CH:24][C:25]([C:28]2[CH:29]=[C:30]([N:1]3[C:11]4[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=4)[C:4](=[O:5])[C:2]3=[O:3])[CH:31]=[CH:32][CH:33]=2)=[CH:26][CH:27]=1)[C:15]1[CH:16]=[CH:17][CH:18]=[CH:19][CH:20]=1

Komponenten

6

Edukt 3

HCID 7054IsatinHCID 24758Sodium hydrideHCID 186833604-(3-Bromophenyl)phenol benzyl ether

Produkt 1

HCID 22016446N-[3-(4-benzyloxyphenyl)phenyl]isatin

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 83717Copper iodideKatalysatorHCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

Isatin (0.12 g, 0.81 mmoles) in anhydrous DMF (30 mL) was cooled in an ice bath under nitrogen and treated with sodium hydride (21 mg, 1.1 equivalents). The reaction was stirred in ice for 0.5 hour and then warmed to room temperature. This solution was then treated with 4-(3-bromophenyl)phenol benzyl ether (Hajduk, et al., J. Am. Chem. Soc., 1997, 119, pp. 5818-5827), (0.16 g, 0.47 mmoles) followed by copper iodide (0.32 g, 1.68 mmoles). The reaction was heated in an oil-bath at 140° C. After ˜16 hours, the reaction was cooled to room temperature and concentrated under reduced pressure. The residue was dissolved in ethyl acetate (˜75 mL) and filtered. The filtrate was concentrated under reduced pressure to afford a sticky, brown solid which was purified by preparative TLC on silica gel using 25% ethyl acetate in hexanes as the developing solvent. Rf (product)=0.38. Yield=47 mg (25%); MALDI-TOF MS 407.02 obs. (405.5 calc.); 1H-NMR (CDCl3) 5.12 (s, 2H), 6.95 (d, 1H, J=8 Hz), 7.06 (d, 2H, J=8.8 Hz), 7.18 (t, 1H, J=7.5 Hz), 7.33-7.47 (m, 7H), 7.53 (d, 2H, J=8.8 Hz), 7.57-7.60 (m, 2H), 7.71 (d, 1H, J=7.5 Hz).

Aufarbeitung

  1. temperatureThe reaction was heated in an oil-bath at 140° C
  2. waitAfter ˜16 hours
  3. temperaturethe reaction was cooled to room temperature
  4. concentrationconcentrated under reduced pressure
  5. dissolutionThe residue was dissolved in ethyl acetate (˜75 mL)
  6. filtrationfiltered
  7. concentrationThe filtrate was concentrated under reduced pressure
  8. customto afford a sticky, brown solid which
  9. customwas purified by preparative TLC on silica gel using 25% ethyl acetate in hexanes as the developing solvent

Quellen und Nachweise

ORD-Eintrag
ord-e8c38ae8b92d4db39209a58e92cf0a14
Quelldatensatz
uspto-grants-2009_11
Patentnummer
US07611909B1

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