Methanol → 4-amino-1-[(2,2-dimethyl[1,3]dioxolan-4-yl)methyl]-2-ethoxymethyl-1H-imidazo[4,5-c]quinolin-7-ol

HRID 2383218Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2383218
C([O:8][C:9]1[CH:10]=[CH:11][C:12]2[C:13]3[N:22]([CH2:23][CH:24]4[CH2:28][O:27][C:26]([CH3:30])([CH3:29])[O:25]4)[C:21]([CH2:31][O:32][CH2:33][CH3:34])=[N:20][C:14]=3[C:15]([NH2:19])=[N:16][C:17]=2[CH:18]=1)C1C=CC=CC=1.CO>C(#N)C.[OH-].[Pd+2].[OH-]>[NH2:19][C:15]1[C:14]2[N:20]=[C:21]([CH2:31][O:32][CH2:33][CH3:34])[N:22]([CH2:23][CH:24]3[CH2:28][O:27][C:26]([CH3:30])([CH3:29])[O:25]3)[C:13]=2[C:12]2[CH:11]=[CH:10][C:9]([OH:8])=[CH:18][C:17]=2[N:16]=1

Komponenten

5

Edukt 2

HCID 887MethanolHCID 575453177-benzyloxy-1-[(2,2-dimethyl[1,3]dioxolan-4-yl)methyl]-2-ethoxymethyl-1H-imidazo[4,5-c]quinolin-4-ylamine

Produkt 1

HCID 1360751984-amino-1-[(2,2-dimethyl[1,3]dioxolan-4-yl)methyl]-2-ethoxymethyl-1H-imidazo[4,5-c]quinolin-7-ol

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 9942167Palladium hydroxideKatalysatorHCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

Palladium hydroxide (Pearlman's catalyst) (20% palladium w/w on carbon, 900 mg) was added to a solution of 7-benzyloxy-1-[(2,2-dimethyl[1,3]dioxolan-4-yl)methyl]-2-ethoxymethyl-1H-imidazo[4,5-c]quinolin-4-ylamine (9.00 g, 19.46 mmol, 1 eq), prepared as described in Example 152, in acetonitrile (300 mL) and methanol (300 mL) in a sealed vessel and the reaction mixture was placed under hydrogen pressure (30 psi, 2.1×105 Pa) for 24 hours. The crude reaction mixture was filtered through a layer of CELITE filter aid and the filtrate was concentrated under reduced pressure and triturated with acetonitrile. The resulting crystalline material was collected by filtration and washed with acetonitrile to afford 3.66 of 4-amino-1-[(2,2-dimethyl[1,3]dioxolan-4-yl)methyl]-2-ethoxymethyl-1H-imidazo[4,5-c]quinolin-7-ol as an off-white solid. Additional product (0.36 g) was isolated from the filtrate of the initial trituration by concentration under reduced pressure, trituration with acetonitrile, and filtration for a total yield of 4.02 g of 4-amino-1-[(2,2-dimethyl[1,3]dioxolan-4-yl)methyl]-2-ethoxymethyl-1H-imidazo[4,5-c]quinolin-7-ol, isolated as an off-white solid, mp 240-242° C. 1H-NMR (300 MHz, DMSO) δ 9.51 (br s, 1H), 7.96 (d, J=8.9 Hz, 1H), 6.95 (d, J=2.5 Hz, 1H), 6.76 (dd, J=8.9, 2.6 Hz, 1H), 6.46 (br s, 2H), 4.92-4.60 (m, 4H), 4.57-4.45 (m, 1H), 4.18 (dd, J=8.6, 6.4 Hz, 1H), 3.83 (dd, J=8.6, 6.5 Hz, 1H), 3.54 (q, J=7.0 Hz, 2H), 1.34 (s, 3H), 1.19 (s, 3H), 1.15 (t, J=7.0 Hz, 3H); 13C-NMR (75 MHz, DMSO) δ 156.41, 152.0, 148.1, 147.2, 133.9, 124.4, 121.7, 111.7, 109.7, 109.0, 107.9, 74.4, 66.0, 65.2, 64.3, 47.6, 26.2, 24.9, 14.8; MS (APCI) m/z 373.0 (M+H)+; Anal. calcd for C19H24N4O4: C, 61.28; H, 6.50; N, 15.04. Found: C, 61.12; H, 6.53; N, 14.98.

Aufarbeitung

  1. customprepared
  2. customThe crude reaction mixture
  3. filtrationwas filtered through a layer of CELITE
  4. filtrationfilter aid
  5. concentrationthe filtrate was concentrated under reduced pressure
  6. customtriturated with acetonitrile
  7. filtrationThe resulting crystalline material was collected by filtration
  8. washwashed with acetonitrile

Quellen und Nachweise

ORD-Eintrag
ord-5407ce9dda3a43a6b85a71ef260ae6ca
Quelldatensatz
uspto-grants-2012_09
Patentnummer
US08263594B2

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