P-Anisidine → tert-butyl 6-[3-(4-methoxyanilino)-3-oxopropyl]-1,4,5,6-tetrahydroazepino[4,5-b]indole-3(2H)-carboxylate

HRID 1356283

Reaktionsgleichung

Reaktionsgleichung von HRID 1356283
[C:1]([O:5][C:6]([N:8]1[CH2:21][CH2:20][C:19]2[C:18]3[CH:17]=[CH:16][CH:15]=[CH:14][C:13]=3[N:12]([CH2:22][CH2:23][C:24]([OH:26])=O)[C:11]=2[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[CH3:27][O:28][C:29]1[CH:34]=[CH:33][C:32]([NH2:35])=[CH:31][CH:30]=1.CN(C1C=CC=CN=1)C.C(N=C=NC(C)C)(C)C>C1COCC1.CCOC(C)=O>[CH3:27][O:28][C:29]1[CH:34]=[CH:33][C:32]([NH:35][C:24](=[O:26])[CH2:23][CH2:22][N:12]2[C:13]3[CH:14]=[CH:15][CH:16]=[CH:17][C:18]=3[C:19]3[CH2:20][CH2:21][N:8]([C:6]([O:5][C:1]([CH3:4])([CH3:3])[CH3:2])=[O:7])[CH2:9][CH2:10][C:11]2=3)=[CH:31][CH:30]=1

Komponenten

7

Edukt 4

HCID 7732P-AnisidineHCID 12734DiisopropylcarbodiimideHCID 218852-DimethylaminopyridineHCID 223970103-(3-(tert-butoxycarbonyl)-2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)propanoic acid

Produkt 1

HCID 22396876tert-butyl 6-[3-(4-methoxyanilino)-3-oxopropyl]-1,4,5,6-tetrahydroazepino[4,5-b]indole-3(2H)-carboxylateAusbeute 84 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

3-(3-(tert-butoxycarbonyl)-2,3,4,5-tetrahydroazepino[4,5-b]indol-6(1H)-yl)propanoic acid (0.105 g, 0.292 mmol), p-anisidine (0.0377 g, 0.306 mmol, 1.05 equiv.) and dimethylaminopyridine (0.0357 g, 0.292 mmol, 1.00 equiv.) were dissolved in THF at rt under N2. Diisopropylcarbodiimide (0.0503 mL, 0.0405 g, 0.321 mmol, 1.00 equiv.) was added, then the reaction mixture was stirred for 29 h. The reaction mixture was taken up in EtOAc and washed with 10% aq. citric acid (2×), saturated aq. NaHCO3 (2×) and brine (1×). The organic layer was dried over MgSO4, filtered, and concentrated. The crude product (0.1686 g) was chromatographed (SiO2 25 g, eluted with 9:1 toluene: acetone) to give tert-butyl 6-[3-(4-methoxyanilino)-3-oxopropyl]-1,4, 5,6-tetrahydroazepino[4,5-b]indole-3(2H)-carboxylate (0.113 g) in 84% yield. 1H NMR (300 MHz, CDCl3) δ 1.47, 2.68-2.76, 2.95-3.08, 3.56-3.70, 3.79, 4.53, 6.83, 7.12-7.54; MS (ESI+) for C27H33N3O4 m/z 464.0 (M+H)+.

Aufarbeitung

  1. washwashed with 10% aq. citric acid (2×), saturated aq. NaHCO3 (2×) and brine (1×)
  2. dry with materialThe organic layer was dried over MgSO4
  3. filtrationfiltered
  4. concentrationconcentrated
  5. customThe crude product (0.1686 g) was chromatographed
  6. wash(SiO2 25 g, eluted with 9:1 toluene: acetone)

Quellen und Nachweise

ORD-Eintrag
ord-8c22cf9e21c8452c8c2ae07236a4496b
Quelldatensatz
uspto-grants-2003_07
Patentnummer
US06586421B2

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