Reaktion #58598

Reaktionsgleichung

Potassium tert-butoxide

N-benzyl-N-(2-hydroxyethyl)chloroacetamide

→

oil

Ausbeute 84.0%

4-Benzylmorpholin-3-one

Ausbeute 84.0%

Lösungsmittel

tert-butanol

tert-butanol

Reaktionsbedingungen

Aufarbeitung

1. 1
   Extraktionthe resultant cloudy solution extracted with ethyl acetate
2. 2
   WaschenThe combined organic layers are washed with brine
3. 3
   Trocknendried over magnesium sulphate
4. 4
   Sonstigeevaporated in vacuo

Vorschrift

A solution of N-benzyl-N-(2-hydroxyethyl)chloroacetamide (627.7 g, 2.76 mol) in tert-butanol (0.9 L) is stirred under nitrogen while warming to 25-30° C. Potassium tert-butoxide (2.897 L of a 1M solution in tert-butanol, 2.90 mol, 1.05 eq) is added over 2 hours. The reaction mixture is then stirred at room temperature for 90 minutes. Ice-cold water (6 L) is added and the resultant cloudy solution extracted with ethyl acetate. The combined organic layers are washed with brine, dried over magnesium sulphate and evaporated in vacuo to give a light brown oil (441 g, 84%), which is used in the next stage without further purification; MW 191.23; C11H13NO2; 1H NMR (CDCl3): 7.29-7.40 (5H, m), 4.67 (2H, s), 4.28 (2H, s), 3.87 (2H, t, 5 Hz), 3.31 (2H, t, 5 Hz); LCMS: (12 min method) m/z 192 [M+H]+RT 1.00 min.

Quelle