Sodium Bicarbonate → N-methyl-N-((4-methyl-5-phenyl-4H-1,2,4-triazol-3-yl)methyl)-5,6,7,8-tetrahydroquinolin-8-amine

HRID 628694Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 628694
[CH3:1][NH:2][CH:3]1[C:12]2[N:11]=[CH:10][CH:9]=[CH:8][C:7]=2[CH2:6][CH2:5][CH2:4]1.[CH3:13][N:14]1[C:18]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)=[N:17][N:16]=[C:15]1[CH:25]=O.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C([O-])(O)=O.[Na+]>ClCCCl.CC(O)=O>[CH3:1][N:2]([CH2:25][C:15]1[N:14]([CH3:13])[C:18]([C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)=[N:17][N:16]=1)[CH:3]1[C:12]2[N:11]=[CH:10][CH:9]=[CH:8][C:7]=2[CH2:6][CH2:5][CH2:4]1

Komponenten

7

Edukt 4

HCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 115428934-methyl-5-phenyl-4H-1,2,4-triazole-3-carbaldehydeHCID 58985336N-methyl-5,6,7,8-tetrahydroquinolin-8-amine

Produkt 1

HCID 44242330N-methyl-N-((4-methyl-5-phenyl-4H-1,2,4-triazol-3-yl)methyl)-5,6,7,8-tetrahydroquinolin-8-amine

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 176Acetic AcidKatalysatorHCID 111,2-DichloroethaneLösungsmittel

Reaktionsbedingungen

Temperatur
65 °C

Versuchsvorschrift

To a solution of N-methyl-5,6,7,8-tetrahydroquinolin-8-amine, 5, (0.39 g, 2.40 mmol) in 1,2-dichloroethane (4 mL) was added 4-methyl-5-phenyl-4H-1,2,4-triazole-3-carbaldehyde, 36, (0.41 g, 2.20 mmol), sodium triacetoxyborohydride (0.84 g, 3.90 mmol), and AcOH (1 drop). The reaction mixture was heated to 65° C. and stirred for 18 h. The reaction mixture was cooled to room temperature, poured into saturated aqueous NaHCO3 (10 mL) and extracted with ethyl acetate (2×10 mL). The combined organic phases were washed with brine then dried over MgSO4, filtered, and concentrated in vacuo. The crude material was purified via chromatography on basic alumina (0-5% methanol/dichloromethane) yielding BP: 1H NMR (400 MHz, CDCl3) δ 8.39, (d, J=4.8 Hz, 1H), 7.58-7.53 (m, 2H), 7.46-7.39, (m, 3H), 7.32, (d, J=8.4 Hz, 1H), 7.01, (dd, J=7.2, 4.4 Hz, 1H), 4.04-3.92, (m, 2H), 3.78, (d, J=14.0 Hz, 1H), 2.85-2.74, (m, 1H), 2.71-2.62 (m, 1H), 3.33, (s, 3H), 2.12-1.94 (m, 3H), 1.74-1.62 (m, 1H); ESI+ MS: m/z (rel intensity) 334 (100, M+H).

Aufarbeitung

  1. temperatureThe reaction mixture was cooled to room temperature
  2. extractionextracted with ethyl acetate (2×10 mL)
  3. washThe combined organic phases were washed with brine
  4. dry with materialthen dried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customThe crude material was purified via chromatography on basic alumina (0-5% methanol/dichloromethane)
  8. customyielding BP

Quellen und Nachweise

ORD-Eintrag
ord-bdb17e4abab741b5815050b095b0650c
Quelldatensatz
uspto-grants-2016_04
Patentnummer
US09314468B2

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