Reaktion #360702

Reaktionsgleichung

3-bromo-phenol

1-(2-chloro-ethyl)-pyrrolidine

potassium carbonate

→

desired product

Ausbeute 43.1%

1-[2-(3-bromo-phenoxy)-ethyl]-pyrrolidine

Ausbeute 43.1%

Lösungsmittel

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   workup.ADDITIONThe contents were poured onto ethyl acetate water mixture
2. 2
   Extraktionextracted once
3. 3
   SonstigeThe organic layer was separated
4. 4
   Waschenwashed with brine
5. 5
   Trocknendried over sodium sulfate (Na2SO4)
6. 6
   FiltrationFiltration
7. 7
   Einengenfollowed by concentration
8. 8
   Sonstigeprovided crude product as a pale yellow oil

Vorschrift

3-bromo-phenol (5.34 g, 30.9 mmol, 1 equiv), 1-(2-chloro-ethyl)-pyrrolidine (5.24 g, 30.9 mmol, 1 equiv) and potassium carbonate (K2CO3) (34 g, 24.7 mmol, 8 equiv) were weighed out into a 500 mL round bottom flask, were diluted with 150 mL DMF and stirred for 2 days. The contents were poured onto ethyl acetate water mixture and extracted once. The organic layer was separated, washed with brine and dried over sodium sulfate (Na2SO4). Filtration followed by concentration provided crude product as a pale yellow oil. Column chromatography (1:9 ethyl acetate/hexanes) provided desired product as a yellow oil (3.6 g, 43% yield). 1H NMR (DMSO-d6): δ 1.65-1.69 (m, 4H), 2.72 (s, 1H), 2.75 (t, J=5.8 Hz, 2H), 2.88 (s, 1H), 4.06 (t, J=5.8 Hz, 2H), 6.95 (dd, J=8.35 Hz, 1H), 7.11 (d, J=7.7, 1H), 7.13-7.14 (m, 1H), 7.22 (t, J=8.1 Hz, 1H).

Quelle