Triethylamine → 1-Oxo-1-(2-(pyrrolidin-1-yl)cyclopent-1-enyl)propan-2-yl acetate

HRID 240896

Reaktionsgleichung

Reaktionsgleichung von HRID 240896
[C:1]([O:4][CH:5]([CH3:9])[C:6](Cl)=[O:7])(=[O:3])[CH3:2].[C:10]1([N:15]2[CH2:19][CH2:18][CH2:17][CH2:16]2)[CH2:14][CH2:13][CH2:12][CH:11]=1.C(N(CC)CC)C>C1(C)C=CC=CC=1>[C:1]([O:4][CH:5]([CH3:9])[C:6](=[O:7])[C:11]1[CH2:12][CH2:13][CH2:14][C:10]=1[N:15]1[CH2:19][CH2:18][CH2:17][CH2:16]1)(=[O:3])[CH3:2]

Komponenten

5

Versuchsvorschrift

Add dropwise a solution of 1-chloro-1-oxopropan-2-yl acetate (600 g, 3.98 mol) in toluene (1200 mL) to a solution of 1-cyclopent-1-enyl-pyrrolidine (546.7 g, 3.98 mol) and triethyl amine (483.9 g, 4.78 mol) in toluene (2400 mL). Reflux the mixture for overnight. Filter the mixture and concentrate the filtration to give crude 1-oxo-1-(2-(pyrrolidin-1-yl)cyclopent-1-enyl)propan-2-yl acetate (952 g), which is used in next step without further purification. 1H NMR (CDCl3, 400 MHz): δ 5.27 (m, 1H), 3.56 (m, 2H), 3.16 (m, 2H), 2.83 (m, 1H), 2.58 (m, 3H), 2.10 (s, 3H), 1.93 (m, 2H), 1.82 (m, 4H), 1.36 (d, J=7.2, 3H).

Aufarbeitung

  1. temperatureReflux the mixture for overnight
  2. filtrationFilter the mixture
  3. concentrationconcentrate
  4. filtrationthe filtration

Quellen und Nachweise

ORD-Eintrag
ord-e6f5be68a13a4cfc84f44c25f1ade69f
Quelldatensatz
uspto-grants-2014_02
Patentnummer
US08648081B2

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