Ammonia → HCID 19980851, Verbindung

HRID 231347Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 231347
[NH3:1].O=[C:3]([CH3:11])[CH2:4][C:5]([O:7][CH2:8][CH2:9][OH:10])=[O:6]>C(O)C>[NH2:1]/[C:3](/[CH3:11])=[CH:4]\[C:5]([O:7][CH2:8][CH2:9][OH:10])=[O:6]

Komponenten

4

Edukt 2

HCID 222AmmoniaHCID 118544Butanoic acid, 3-oxo-, 2-hydroxyethyl ester

Produkt 1

HCID 19980851HCID 19980851, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 702EthanolLösungsmittel

Versuchsvorschrift

Anhydrous ammonia gas was bubbled through a solution of 2-hydroxyethyl 3-oxo-butyrate (25 g, 0.17 moles) (ref 5) and ethanol (250 mL) for 20 minutes. This solution was stirred for 16 hours at room temperature. The solvent was removed in vacuo and the resulting oil was chromatographed on silica gel (250 g) using ethyl acetate-hexane 60:40 as eluant. The enriched fractions were combined and the solvent removed in vacuo to give the product; H' NMR CDCl3 4.33 (t, 2H) 3.85 (t, 2H) 3.55 (s, 1H) 2.85 (broad singlet, 1H) 2.31 (s, 3H).

Aufarbeitung

  1. customThe solvent was removed in vacuo
  2. customthe resulting oil was chromatographed on silica gel (250 g)
  3. customthe solvent removed in vacuo
  4. customto give the product

Quellen und Nachweise

ORD-Eintrag
ord-de4688cb7e324f85aadd3014ecce9c53
Quelldatensatz
uspto-grants-1989_07
Patentnummer
US04845225

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