Chloroacetaldehyde → (R)-3-chloro-5-cyclopentyl-6-ethyl-5,6-dihydroimidazo[1,2-f]pteridine

HRID 39339

Reaktionsgleichung

Reaktionsgleichung von HRID 39339
[Cl:1][C:2]1[N:11]=[CH:10][C:9]2[N:8]=[C:7]([NH2:12])[C@@H:6]([CH2:13][CH3:14])[N:5]([CH:15]3[CH2:19][CH2:18][CH2:17][CH2:16]3)[C:4]=2[N:3]=1.Cl[CH2:21][CH:22]=O.C([O-])(O)=O.[Na+].CCOC(C)=O>CO>[Cl:1][C:2]1[N:11]=[CH:10][C:9]2[N:8]3[CH:21]=[CH:22][N:12]=[C:7]3[C@@H:6]([CH2:13][CH3:14])[N:5]([CH:15]3[CH2:19][CH2:18][CH2:17][CH2:16]3)[C:4]=2[N:3]=1

Komponenten

6

Edukt 4

HCID 33Chloroacetaldehyde2×HCID 8857Ethyl AcetateHCID 516892Sodium BicarbonateHCID 59389593(R)-2-chloro-8-cyclopentyl-7-ethyl-7,8-dihydropteridin-6-amine

Produkt 1

HCID 59389590(R)-3-chloro-5-cyclopentyl-6-ethyl-5,6-dihydroimidazo[1,2-f]pteridine

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Reaktionsbedingungen

Temperatur
68 °C

Versuchsvorschrift

(R)-2-chloro-8-cyclopentyl-7-ethyl-7,8-dihydropteridin-6-amine (177 mg, 0.64 mmol) in MeOH (1.5 mL) treated with 50% aqueous chloroacetaldehyde (131 μL, 1.3 Eq.) and the reaction mixture heated to reflux for 6 hours. A further portion of 50% aq. chloroacetaldehyde (400 μL, 3.0 Eq.) was added, and the reaction mixture heated to 68° C. overnight. NaHCO3 (aq. sat.) and EtOAc was added, and the aqueous was further extracted with EtOAc. The combined organic extracts were dried over MgSO4, filtered and concentrated in vacuo.

Aufarbeitung

  1. temperaturethe reaction mixture heated
  2. temperatureto reflux for 6 hours
  3. extractionthe aqueous was further extracted with EtOAc
  4. dry with materialThe combined organic extracts were dried over MgSO4
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-3e1e8996efa2489aa28b5ccb4882deb3
Quelldatensatz
uspto-grants-2013_09
Patentnummer
US08524902B2

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