Reaktion #1150407

Reaktionsgleichung

Pyrrolidine

triethylamine

methanesulfonic acid 1-benzhydryl-azetidin-3-yl ester

water

→

title compound

Ausbeute 125.8%

1-(1-Benzhydryl-azetidin-3-yl)-pyrrolidine

Ausbeute 125.8%

methanesulfonic acid 1-benzhydryl-azetidin-3-yl ester

Lösungsmittel

DMF

Reaktionsbedingungen

Aufarbeitung

1. 1
   TemperaturAfter cooling to room temperature
2. 2
   ExtraktionThe aqueous layer was extracted with EtOAc (3×15 mL)
3. 3
   WaschenThe combined organic extracts were washed with brine
4. 4
   Trocknendried over sodium sulfate
5. 5
   SonstigeThe solvent was then removed under reduced pressure
6. 6
   SonstigePurification by flash chromatography on silica gel (CH2Cl2/MeOH 96:4)

Vorschrift

Pyrrolidine (142 mg, 2 mmol) and triethylamine (100 mg, 1 mmol) were added to a solution of methanesulfonic acid 1-benzhydryl-azetidin-3-yl ester (317.4 mg, 1 mmol) in DMF (6 mL). (The methanesulfonic acid 1-benzhydryl-azetidin-3-yl ester was prepared as described in J. Org. Chem. 1991, 56, 6729-6730). The reaction mixture was heated at 70° C. overnight. After cooling to room temperature, the reaction mixture was treated with water. The aqueous layer was extracted with EtOAc (3×15 mL). The combined organic extracts were washed with brine and dried over sodium sulfate. The solvent was then removed under reduced pressure. Purification by flash chromatography on silica gel (CH2Cl2/MeOH 96:4) afforded the title compound as an oil (184 mg, 65%). MS: 293 (MH+); HPLC Rf: 5.95 min; HPLC purity: 92%.

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