Sulfuric Acid → N5-benzyloxycarbonyl-ornithine, t-butyl ester

HRID 726904

Reaktionsgleichung

Reaktionsgleichung von HRID 726904
[CH2:1]([O:8][C:9]([NH:11][CH2:12][CH2:13][CH2:14][C@@H:15]([C:17]([OH:19])=[O:18])[NH2:16])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:20]1([CH3:30])[CH:25]=CC(S(O)(=O)=O)=C[CH:21]=1.S(=O)(=O)(O)O.C(=O)(O)[O-].[Na+]>C(OC(C)(C)C)(=O)C.O>[CH2:1]([O:8][C:9]([NH:11][CH2:12][CH2:13][CH2:14][C@@H:15]([C:17]([O:19][C:20]([CH3:30])([CH3:25])[CH3:21])=[O:18])[NH2:16])=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Komponenten

7

Reaktionsbedingungen

Temperatur
10 °C

Versuchsvorschrift

Suspend N5 -benzyloxycarbonyl-ornithine (80 g, 0.3 mol) in t-butyl acetate (250 mL) and cool to 10° C. Add p-toluenesulfonic acid (57 g, 0.3 mol) and add, by dropwise addition, concentrated sulfuric acid (80 mL). Stir at 10° C. until the reaction is complete, basify to pH 8 by adding a suspension of sodium bicarbonate in water. Extract with ethyl acetate, dry (MgSO4), and evaporate to give N5 -benzyloxycarbonyl-ornithine, t-butyl ester.

Aufarbeitung

  1. additionby adding
  2. extractionExtract with ethyl acetate
  3. dry with materialdry (MgSO4)
  4. customevaporate

Quellen und Nachweise

ORD-Eintrag
ord-0c0ba7fe8a5d48b9a22bc5b03ea6e4e8
Quelldatensatz
uspto-grants-1998_01
Patentnummer
US05710324

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