Chloroform → HCID 58406181, Verbindung

HRID 549168Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 549168
COC1C=CC(C[NH:8][C:9]2[C:14]3[N:15]=[C:16]4[N:21]([C:13]=3[C:12]([CH3:23])=[C:11]([CH3:24])[N:10]=2)[C@@H:20]([CH3:22])[CH2:19][O:18][CH2:17]4)=CC=1.[OH-].[Na+].C(Cl)(Cl)Cl>FC(F)(F)C(O)=O>[CH3:22][C@H:20]1[CH2:19][O:18][CH2:17][C:16]2=[N:15][C:14]3[C:9]([NH2:8])=[N:10][C:11]([CH3:24])=[C:12]([CH3:23])[C:13]=3[N:21]12

Komponenten

5

Edukt 3

HCID 6212ChloroformHCID 14798Sodium HydroxideHCID 67156151HCID 67156151, Verbindung

Produkt 1

HCID 58406181HCID 58406181, VerbindungAusbeute 50 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6422Trifluoroacetic acidLösungsmittel

Versuchsvorschrift

(4S)—N-(4-Methoxybenzyl)-4,6,7-trimethyl-3,4-dihydro-1H-pyrido[3′,4′:4,5]imidazo[2,1-c][1,4]oxazin-9-amine (350 mg, 0.99 mmol) was dissolved in 15 mL of trifluoroacetic acid and stirred at ambient temperature overnight. The solvent was removed under reduced pressure to give an orange residue which was then treated with 30 mL of aqueous 10% NaOH solution and the mixture was stirred for 2 hours. The solution was then extracted with CH2Cl2 (3×30 mL). The combined organic layers were washed with brine, dried over Na2SO4, filtered and concentrated under reduced pressure to give an orange solid. Chromatography (SiO2, 10-30% CMA/CHCl3) gave an off-white solid. Crystallization from acetonitrile gave (4S)-4,6,7-trimethyl-3,4-dihydro-1H-pyrido[3′,4′:4,5]imidazo[2,1-c][1,4]oxazin-9-amine (115 mg) as a white powder, mp 264-267° C.

Aufarbeitung

  1. customThe solvent was removed under reduced pressure
  2. customto give an orange residue which
  3. stirringthe mixture was stirred for 2 hours
  4. extractionThe solution was then extracted with CH2Cl2 (3×30 mL)
  5. washThe combined organic layers were washed with brine
  6. dry with materialdried over Na2SO4
  7. filtrationfiltered
  8. concentrationconcentrated under reduced pressure
  9. customto give an orange solid
  10. customCrystallization from acetonitrile

Quellen und Nachweise

ORD-Eintrag
ord-c132b8fdb7034ec0a8538e0309faa774
Quelldatensatz
uspto-grants-2011_05
Patentnummer
US07943609B2

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