4-Pyridinecarboxaldehyde → (1H-Benzimidazol-2-ylmethyl)-pyridin-4-ylmethyl-(5,6,7,8-tetrahydro-quinolin-8-yl)-amine

HRID 8961

Reaktionsgleichung

Reaktionsgleichung von HRID 8961
C(OC([N:8]1[C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=2[N:10]=[C:9]1[CH2:17][NH:18][CH:19]1[C:28]2[N:27]=[CH:26][CH:25]=[CH:24][C:23]=2[CH2:22][CH2:21][CH2:20]1)=O)(C)(C)C.[N:29]1[CH:34]=[CH:33][C:32]([CH:35]=O)=[CH:31][CH:30]=1.C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].C(=O)(O)[O-].[Na+]>C(Cl)Cl.C(O)(C(F)(F)F)=O>[NH:8]1[C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][C:11]=2[N:10]=[C:9]1[CH2:17][N:18]([CH2:35][C:32]1[CH:33]=[CH:34][N:29]=[CH:30][CH:31]=1)[CH:19]1[C:28]2[N:27]=[CH:26][CH:25]=[CH:24][C:23]=2[CH2:22][CH2:21][CH2:20]1

Komponenten

7

Edukt 4

HCID 133894-PyridinecarboxaldehydeHCID 516892Sodium BicarbonateHCID 5049666Sodium triacetoxyborohydrideHCID 219850812-[(5,6,7,8-Tetrahydroquinolin-8-ylamino)-methyl]-benzimidazole-1-carboxylic acid tert-butyl ester

Produkt 1

HCID 21985099(1H-Benzimidazol-2-ylmethyl)-pyridin-4-ylmethyl-(5,6,7,8-tetrahydro-quinolin-8-yl)-amineAusbeute 70,2 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6344DichloromethaneLösungsmittelHCID 6422Trifluoroacetic acidLösungsmittel

Versuchsvorschrift

Following General Procedure B: To a solution of (1-tert-butoxycarbonyl-benzimidazol-2-ylmethyl)-(5,6,7,8-tetrahydroquinolin-8-yl)-amine (120 mg, 0.32 mmol) and 4-pyridinecarboxaldehyde (30 μL, 0.32 mmol) in CH2Cl2 (5 mL) was added sodium triacetoxyborohydride (136 mg, 0.64 mmol) and the reaction stirred for 18 h. The resulting crude material was taken up in neat TFA (1 mL) and stirred 3 h. Saturated aqueous sodium bicarbonate (5 mL) was added, and the resulting mixture was extracted with CH2Cl2 (3×10 mL) then the combined organic extracts were dried (MgSO4), and concentrated in vacuo. Purification of the crude material by radial chromatography (1 mm plate, 50:1:1 CH2Cl2—MeOH—NH4OH) afforded the title compound (83 mg, 70%) as a white solid. 1H NMR (CDCl3) δ 1.68–1.72 (m, 1H), 1.97–2.06 (m, 2H), 2.26–2.30 (m, 1H), 2.74–2.77 (m, 1H), 2.80–2.86 (m, 1H), 3.77 (s, 2H), 3.92 (d, 1H, J=16 Hz), 4.09 (dd, 1H, J=9, 7 Hz), 4.17 (d, 1H, J=16 Hz), 7.18–7.22 (m, 3H), 7.36 (d, 2H, J=6 Hz), 7.44 (dd, 1H, J=7, 1 Hz), 7.52 (br d, 1H, J=7 Hz), 7.66 (br d, 1H, J=7 Hz), 8.46 (dd, 2H, J=5, 2 Hz), 8.70 (dd, 1H, J=5, 1 Hz); 13C NMR (CDCl3) δ 21.2, 23.8, 29.0, 49.1, 53.0, 60.5, 110.9, 118.8, 121.4, 121.9, 122.5, 123.3, 133.7, 134.7, 137.4, 144.2, 146.9, 148.7, 149.8, 155.4, 156.9. ES-MS m/z 370 (M+H). Anal. Calcd. for C23H23N5.0.2H2O.0.2CH2Cl2: C, 71.44; H, 6.15; N, 17.95. Found: C, 71.63; H, 6.30; N, 17.77.

Aufarbeitung

  1. stirringstirred 3 h
  2. extractionthe resulting mixture was extracted with CH2Cl2 (3×10 mL)
  3. dry with materialthe combined organic extracts were dried (MgSO4)
  4. concentrationconcentrated in vacuo
  5. customPurification of the crude material by radial chromatography (1 mm plate, 50:1:1 CH2Cl2—MeOH—NH4OH)

Quellen und Nachweise

ORD-Eintrag
ord-a73ae5db738043a19c06fc8e82d6e4e3
Quelldatensatz
uspto-grants-2006_08
Patentnummer
US07091217B2

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