Diisopropylethylamine → (2S)-N,N-dimethyl-1-[5-(methyloxy)-6-nitro-2,3-dihydro-1H-indol-1-yl]-1-oxo-2-propanamine

HRID 1014333Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1014333
Cl.[CH3:2][O:3][C:4]1[CH:5]=[C:6]2[C:10](=[CH:11][C:12]=1[N+:13]([O-:15])=[O:14])[NH:9][CH2:8][CH2:7]2.[CH3:16][N:17]([CH3:23])[C@H:18]([C:20](O)=[O:21])[CH3:19].C1CN([P+](ON2N=NC3C=CC=CC2=3)(N2CCCC2)N2CCCC2)CC1.F[P-](F)(F)(F)(F)F.CCN(C(C)C)C(C)C>CN(C)C=O>[CH3:16][N:17]([CH3:23])[C@@H:18]([CH3:19])[C:20]([N:9]1[C:10]2[C:6](=[CH:5][C:4]([O:3][CH3:2])=[C:12]([N+:13]([O-:15])=[O:14])[CH:11]=2)[CH2:7][CH2:8]1)=[O:21]

Komponenten

6

Edukt 4

HCID 81531DiisopropylethylamineHCID 2724699PyBOPHCID 5488191N,N-DimethylalanineHCID 673167385-(methyloxy)-6-nitro-2,3-dihydro-1H-indole hydrochloride

Produkt 1

HCID 59442085(2S)-N,N-dimethyl-1-[5-(methyloxy)-6-nitro-2,3-dihydro-1H-indol-1-yl]-1-oxo-2-propanamineAusbeute 86,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6228DimethylformamideLösungsmittel

Versuchsvorschrift

To a solution of 5-(methyloxy)-6-nitro-2,3-dihydro-1H-indole hydrogen chloride (2 g, 8.67 mmol) in N,N-dimethylformamide (100 mL) was added N,N-dimethyl-L-alanine (1.524 g, 13.01 mmol), PyBOP (13.54 g, 26.0 mmol), and DIPEA (15.14 mL, 87 mmol). After stirring overnight at rt, the solvent removed, residue suspended in dichloromethane (150 mL), washed with water (100 mL), concentrated on the rotovap, and purified by column chromatography (DCM to 5% MeOH/DCM) to give (2S)-N,N-dimethyl-1-[5-(methyloxy)-6-nitro-2,3-dihydro-1H-indol-1-yl]-1-oxo-2-propanamine (2.2 g, 86%). ESIMS (M+H)+=294.

Aufarbeitung

  1. customthe solvent removed
  2. washwashed with water (100 mL)
  3. concentrationconcentrated on the rotovap
  4. custompurified by column chromatography (DCM to 5% MeOH/DCM)

Quellen und Nachweise

ORD-Eintrag
ord-55a044c12f2144719a77af95d0eedd8e
Quelldatensatz
uspto-grants-2011_07
Patentnummer
US07981903B2

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