Ethyl 2-chloroethanecarboximidate hydrochloride → 1-[(1R)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-({[tert-butyl(dimethyl)silyl]oxy}methyl)-2-methylpropyl]-2-(chloromethyl)-1H-imidazo[4,5-c]quinoline

HRID 549112

Reaktionsgleichung

Reaktionsgleichung von HRID 549112
[Si:1]([O:8][C:9]([CH3:33])([CH3:32])[C@H:10]([NH:20][C:21]1[C:30]2[C:25](=[CH:26][CH:27]=[CH:28][CH:29]=2)[N:24]=[CH:23][C:22]=1[NH2:31])[CH2:11][O:12][Si:13]([C:16]([CH3:19])([CH3:18])[CH3:17])([CH3:15])[CH3:14])([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].Cl.[Cl:35][CH2:36][C:37](=N)OCC>ClCCCl>[Si:1]([O:8][C:9]([CH3:33])([CH3:32])[C@H:10]([N:20]1[C:21]2[C:30]3[CH:29]=[CH:28][CH:27]=[CH:26][C:25]=3[N:24]=[CH:23][C:22]=2[N:31]=[C:37]1[CH2:36][Cl:35])[CH2:11][O:12][Si:13]([C:16]([CH3:19])([CH3:18])[CH3:17])([CH3:15])[CH3:14])([C:4]([CH3:5])([CH3:6])[CH3:7])([CH3:3])[CH3:2]

Komponenten

4

Edukt 2

HCID 12470659Ethyl 2-chloroethanecarboximidate hydrochloride2×HCID 86624120HCID 86624120, Verbindung

Produkt 1

HCID 671569791-[(1R)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-({[tert-butyl(dimethyl)silyl]oxy}methyl)-2-methylpropyl]-2-(chloromethyl)-1H-imidazo[4,5-c]quinolineAusbeute 25,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 111,2-DichloroethaneLösungsmittel

Reaktionsbedingungen

Temperatur
70 °C

Versuchsvorschrift

N4-[(1R)-2-{[tert-Butyl(dimethyl)silyl]oxy}-1-({[tert-butyl(dimethyl)silyl]oxy}methyl)-2-methylpropyl]quinoline-3,4-diamine (6.12 g, 12.5 mmol) was dissolved in 100 mL of dry 1,2-dichloroethane and the solution was stirred under N2. Ethyl 2-chloroethanimidoate hydrochloride (2.77 g, 17.5 mmol) was then added and the reaction mixture was heated to 70° C. After stirring for 3 days, the reaction mixture was treated with an additional 1.00 g of ethyl 2-chloroethanimidoate hydrochloride and the reaction temperature was increased to 85° C. After stirring for 2 days, the reaction was cooled and the 1,2-dichloroethane was removed under reduced pressure. The resulting material was partitioned between 200 mL of saturated NaHCO3 solution and 200 mL of ethyl acetate. The layers were separated and the organic portion was washed with H2O and brine. The organic portion was then dried over Na2SO4, filtered and concentrated under reduced pressure. Chromatography (SiO2, 25%-50% ethyl acetate/hexanes) gave 1-[(1R)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-({[tert-butyl(dimethyl)silyl]oxy}methyl)-2-methylpropyl]-2-(chloromethyl)-1H-imidazo[4,5-c]quinoline (1.74 g) as a golden syrup.

Aufarbeitung

  1. stirringAfter stirring for 3 days
  2. temperaturethe reaction temperature was increased to 85° C
  3. stirringAfter stirring for 2 days
  4. temperaturethe reaction was cooled
  5. customthe 1,2-dichloroethane was removed under reduced pressure
  6. customThe resulting material was partitioned between 200 mL of saturated NaHCO3 solution and 200 mL of ethyl acetate
  7. customThe layers were separated
  8. washthe organic portion was washed with H2O and brine
  9. dry with materialThe organic portion was then dried over Na2SO4
  10. filtrationfiltered
  11. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-c44087bbcad04a0ebdf88c4929188f65
Quelldatensatz
uspto-grants-2011_05
Patentnummer
US07943609B2

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