Hydrochloric Acid → (E)-2-(3-{3-[5-methyl-2-(4-trifluoromethyl-phenyl)-oxazol-4-ylmethoxy]-phenyl}-pent-2-enyl)-[1,2,4]oxadiazolidine-3,5-dione

HRID 129521

Reaktionsgleichung

Reaktionsgleichung von HRID 129521
[C:1](=[O:6])=[N:2][C:3](Cl)=[O:4].[CH3:7][C:8]1[O:12][C:11]([C:13]2[CH:18]=[CH:17][C:16]([C:19]([F:22])([F:21])[F:20])=[CH:15][CH:14]=2)=[N:10][C:9]=1[CH2:23][O:24][C:25]1[CH:26]=[C:27](/[C:31](/[CH2:36][CH3:37])=[CH:32]/[CH2:33][NH:34][OH:35])[CH:28]=[CH:29][CH:30]=1.Cl>C1COCC1>[CH3:7][C:8]1[O:12][C:11]([C:13]2[CH:18]=[CH:17][C:16]([C:19]([F:21])([F:20])[F:22])=[CH:15][CH:14]=2)=[N:10][C:9]=1[CH2:23][O:24][C:25]1[CH:26]=[C:27](/[C:31](/[CH2:36][CH3:37])=[CH:32]/[CH2:33][N:34]2[C:3](=[O:4])[NH:2][C:1](=[O:6])[O:35]2)[CH:28]=[CH:29][CH:30]=1

Komponenten

5

Edukt 3

HCID 313Hydrochloric AcidHCID 119708Isocyanatocarbonyl chlorideHCID 10717593(E)-N-(3-{3-[5-methyl-2-(4-trifluoromethyl-phenyl)-oxazol-4-ylmethoxy]-phenyl}-pent-2-enyl)-hydroxylamine

Produkt 1

HCID 10028965(E)-2-(3-{3-[5-methyl-2-(4-trifluoromethyl-phenyl)-oxazol-4-ylmethoxy]-phenyl}-pent-2-enyl)-[1,2,4]oxadiazolidine-3,5-dioneAusbeute 64 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

N-(Chlorocarbonyl)isocyanate (0.37 ml, 4.63 mmol) was added dropwise to a cold (-5° C.) mixture of (E)-N-(3-{3-[5-methyl-2-(4-trifluoromethyl-phenyl)-oxazol-4-ylmethoxy]-phenyl}-pent-2-enyl)-hydroxylamine (2.0 g, 4.63 mmol) in THF (20 ml). The mixture was stirred for 30 minutes, then poured into HCl (1N) and extracted with EtOAc. The organic extracts were dried over MgSO4. Evaporation and purification by flash chromatography on acid washed (5% H3PO4 /MeOH) silica gel (hexane/EtOAc 3/1) gave a white solid (1.48 g, 64% yield, mp 66°-67° C.). Analysis for: C25H22F3N3O5Calc'd: C, 59.88; H, 4.42; N, 8.38 Found: C, 59.83; H, 4.37; N, 8.28

Aufarbeitung

  1. extractionextracted with EtOAc
  2. dry with materialThe organic extracts were dried over MgSO4
  3. customEvaporation and purification by flash chromatography on acid
  4. washwashed (5% H3PO4 /MeOH) silica gel (hexane/EtOAc 3/1)

Quellen und Nachweise

ORD-Eintrag
ord-fe032ad50cb34606a3a75c4a52a6fdd8
Quelldatensatz
uspto-grants-1995_11
Patentnummer
US05468762

Verknüpfte Notizen

Wird geladen…