4-Chlorophenyl Isocyanate → (R)-3-(2-chloro-4-nitroimidazol-1-yl)-2-hydroxy-2-methylpropyl 4-chlorophenylcarbamate

HRID 856182Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 856182
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]=[C:9]=[O:10])=[CH:4][CH:3]=1.C(N(CC)CC)C.[Cl:18][C:19]1[N:20]([CH2:27][C@:28]([OH:32])([CH3:31])[CH2:29][OH:30])[CH:21]=[C:22]([N+:24]([O-:26])=[O:25])[N:23]=1>C1COCC1>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9](=[O:10])[O:30][CH2:29][C@@:28]([OH:32])([CH3:31])[CH2:27][N:20]2[CH:21]=[C:22]([N+:24]([O-:26])=[O:25])[N:23]=[C:19]2[Cl:18])=[CH:4][CH:3]=1

Komponenten

5

Edukt 3

HCID 76934-Chlorophenyl IsocyanateHCID 8471TriethylamineHCID 16099121(R)-3-(2-Chloro-4-nitro-1H-imidazol-1-yl)-2-methylpropane-1,2-diol

Produkt 1

HCID 69481886(R)-3-(2-chloro-4-nitroimidazol-1-yl)-2-hydroxy-2-methylpropyl 4-chlorophenylcarbamateAusbeute 83 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel2×

Versuchsvorschrift

A THF solution (15 ml) of 4-chlorophenylisocyanate (1.3 g, 85 mmol) and triethylamine (0.1 ml) were added to a suspension of (R)-2-chloro-1-(2,3-dihydroxy-2-methylpropyl)-4-nitroimidazole prepared in Example 10 (1.5 g, 6.5 mmol) in THF (30 ml) followed by stirring at room temperature for 19 hours. Insoluble matters were removed by filtration, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (methylene chloride/ethyl acetate=9/1) to afford (R)-3-(2-chloro-4-nitroimidazol-1-yl)-2-hydroxy-2-methylpropyl 4-chlorophenylcarbamate (2.1 g, yield 83%) as a white solid.

Aufarbeitung

  1. customInsoluble matters were removed by filtration
  2. concentrationthe filtrate was concentrated under reduced pressure
  3. customThe residue was purified by silica gel column chromatography (methylene chloride/ethyl acetate=9/1)

Quellen und Nachweise

ORD-Eintrag
ord-96f878a971954b01acbb7224b8b93bd5
Quelldatensatz
uspto-grants-2007_08
Patentnummer
US07262212B2

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