Toluene → HCID 178448140, Verbindung

HRID 1694888Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1694888
N(C(OCC)=O)=NC(OCC)=O.C1(C)C=CC=CC=1.O[CH2:21][C@H:22]([NH:32][S:33]([C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][C:37]=1[N+:42]([O-:44])=[O:43])(=[O:35])=[O:34])[C@@H:23]1[CH2:27][C@@H:26]([CH:28]([CH3:30])[CH3:29])[C:25](=[O:31])[O:24]1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>O1CCCC1>[CH:28]([C@@H:26]1[CH2:27][C@@H:23]([CH:22]2[CH2:21][N@@:32]2[S:33]([C:36]2[CH:41]=[CH:40][CH:39]=[CH:38][C:37]=2[N+:42]([O-:44])=[O:43])(=[O:35])=[O:34])[O:24][C:25]1=[O:31])([CH3:30])[CH3:29]

Komponenten

6

Edukt 4

HCID 1140TolueneHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 54578740N-{(S)-2-hydroxy-1-[(2S,4S)-4-isopropyl-5-oxotetrahydrofuran-2-yl]ethyl}-2-nitrobenzenesulfonamide

Produkt 1

HCID 178448140HCID 178448140, VerbindungAusbeute 89,7 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

5.9 ml of a solution of diethyl azodicarboxylate in toluene (40%) (12.9 mmol) was added to a solution of 4.00 g of N-{(S)-2-hydroxy-1-[(2S,4S)-4-isopropyl-5-oxotetrahydrofuran-2-yl]ethyl}-2-nitrobenzenesulfonamide obtained in Example (1f) (10.7 mmol) and 3.38 g of triphenylphosphine (12.9 mmol) in tetrahydrofuran (100 ml) under ice-cooling over 10 minutes, and the mixture was stirred at the same temperature for 10 minutes. The reaction mixture was concentrated under reduced pressure, and the residue was purified by silica gel column chromatography (elution solvent: toluene/acetone=5/1) to obtain 3.40 g of the title compound (yield: 89%).

Aufarbeitung

  1. temperaturecooling over 10 minutes
  2. concentrationThe reaction mixture was concentrated under reduced pressure
  3. customthe residue was purified by silica gel column chromatography (elution solvent: toluene/acetone=5/1)

Quellen und Nachweise

ORD-Eintrag
ord-d0ba49a87dab436ea5f45d0c49541fbc
Quelldatensatz
uspto-grants-2012_04
Patentnummer
US08158790B2

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