Ethyl oxoacetate → Ethyl 3-cyclopropyl-2-hydroxy-propanoate
Reaktionsgleichung
[O:1]=[CH:2][C:3]([O:5][CH2:6][CH3:7])=[O:4].Br[Mg][CH2:10][CH:11]1[CH2:13][CH2:12]1>C1COCC1.C(OCC)(=O)C>[CH:11]1([CH2:10][CH:2]([OH:1])[C:3]([O:5][CH2:6][CH3:7])=[O:4])[CH2:13][CH2:12]1Komponenten
5
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 2
Versuchsvorschrift
Under argon and with ice cooling, a solution of 5.4 g (purity 50%, 26.7 mmol) of ethyl oxoacetate in 50 ml of THF was quickly added dropwise to 7.6 g (48 mmol, 1.8 eq.) of bromo(cyclopropylmethyl)magnesium. The reaction mixture was stirred for another 48 h, diluted with ethyl acetate and quenched with water. Celite was added, and the reaction mixture was stirred for 5 min and then filtered. After phase separation, the organic phase was washed once with water, dried (sodium sulphate), filtered and concentrated under reduced pressure. Yield: 2.6 g (60% of theory)