Undec-4-ene → Diethyl 2-oxopyrrolidine-5,5-dicarboxylate
Reaktionsgleichung
CCCCCCC=CCCC.Br[CH2:13][CH2:14][C:15]([NH:17][CH:18]([C:24]([O:26][CH2:27][CH3:28])=[O:25])[C:19]([O:21][CH2:22][CH3:23])=[O:20])=[O:16]>C(Cl)Cl>[O:16]=[C:15]1[CH2:14][CH2:13][C:18]([C:24]([O:26][CH2:27][CH3:28])=[O:25])([C:19]([O:21][CH2:22][CH3:23])=[O:20])[NH:17]1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
2(b) 314 μl of 1,8-diaza[5.4.0]-7-undecene were added to a solution of 620 mg of diethyl 2-(3-bromopropionamido)malonate (prepared as described above) dissolved in methylene chloride, and the mixture was stirred at room temperature for 3 hours. At the end of this time, the reaction mixture was concentrated by evaporation under reduced pressure, poured into water and then extracted with diethyl ether. The extract was washed with 5% w/v aqueous hydrochloric acid, with a 5% w/v aqueous solution of sodium bicarbonate and with water, in that order, and dried over anhydrous magnesium sulfate. The solvent was then removed by distillation under reduced pressure, to give a crude product. This was purified by column chromatography through silica gel, eluted with a 2:1 by volume mixture of cyclohexane and ethyl acetate, to give 171 mg of diethyl 2-oxopyrrolidine-5,5-dicarboxylate.