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3,4-Diaminopyridine → (S)-tert-butyl 2-(biphenyl-4-yl)-1-(3H-imidazo[4,5-c]pyridin-2-yl)ethylcarbamate

HRID 333343
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 333343
[C:1]1([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[CH:6]=[CH:5][C:4]([CH2:7][C@H:8]([NH:12][C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])[C:9](O)=O)=[CH:3][CH:2]=1.F[P-](F)(F)(F)(F)F.N1(O[P+](N(C)C)(N(C)C)N(C)C)C2C=CC=CC=2N=N1.CCN(C(C)C)C(C)C.[N:62]1[CH:67]=[CH:66][C:65]([NH2:68])=[C:64]([NH2:69])[CH:63]=1>CN(C=O)C.CCOC(C)=O>[C:1]1([C:20]2[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=2)[CH:6]=[CH:5][C:4]([CH2:7][C@H:8]([NH:12][C:13](=[O:14])[O:15][C:16]([CH3:19])([CH3:18])[CH3:17])[C:9]2[NH:69][C:64]3[CH:63]=[N:62][CH:67]=[CH:66][C:65]=3[N:68]=2)=[CH:3][CH:2]=1
KomponentenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

7

Edukt 4

HCID 59183,4-DiaminopyridineHCID 81531DiisopropylethylamineHCID 151348Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphateHCID 2761796N-alpha-t-Butyloxycarbonyl-L-biphenylalanine (Boc-L-Bip-OH)

Produkt 1

HCID 68749665(S)-tert-butyl 2-(biphenyl-4-yl)-1-(3H-imidazo[4,5-c]pyridin-2-yl)ethylcarbamate

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Versuchsvorschrift

To a solution of (S)-3-(biphenyl-4-yl)-2-(tert-butoxycarbonylamino)propanoic acid (400 mg, 1.172 mmol) in DMF (5 mL) were added BOP (580 mg, 1.289 mmol) and DIPEA (0.246 mL, 1.406 mmol) at room temperature. After being stirred for 10 minutes, pyridine-3,4-diamine (130 mg, 1.230 mmol) was added and stirred for 1 hour. The reaction mixture was diluted with EtOAc and washed with H2O and brine. The organic layer was dried over Na2SO4, concentrated under reduced pressure, and purified by silica gel flash column chromatography (10% MeOH in DCM/DCM). The obtained residue was stirred in acetic acid (5 mL) for 4 hours. The reaction mixture was concentrated and purified by silica gel flash column chromatography to give (S)-tert-butyl 2-(biphenyl-4-yl)-1-(3H-imidazo[4,5-c]pyridin-2-yl)ethylcarbamate; 1H NMR (400 MHz, CDCl3) δ 1.41 (s, 9H), 3.33-3.56 (m, 2H), 5.18-5.27 (m, 1H), 5.37-5.48 (m, 1H), 7.22-7.29 (m, 2H), 7.30-7.36 (m, 1H), 7.42 (t, J=7.83 Hz, 2H), 7.48-7.58 (m, 4H), 7.60-7.66 (m, 1H), 8.32 (d, J=5.81 Hz, 1H), 8.94 (s, 1H); MS: m/z (MH+) 415.

Aufarbeitung

  1. stirringstirred for 1 hour
  2. washwashed with H2O and brine
  3. dry with materialThe organic layer was dried over Na2SO4
  4. concentrationconcentrated under reduced pressure
  5. custompurified by silica gel flash column chromatography (10% MeOH in DCM/DCM)
  6. stirringThe obtained residue was stirred in acetic acid (5 mL) for 4 hours
  7. concentrationThe reaction mixture was concentrated
  8. custompurified by silica gel flash column chromatography

Quellen und Nachweise

ORD-Eintrag
ord-953106d223ec441084912d376cf38299
Quelldatensatz
uspto-grants-2014_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08877815B2

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