Benzaldehyde → 2-Propenoic acid, 3-phenyl-

Reaktionsgleichung

[CH:1](=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C=C=O.[C:12]([O-:15])(=[O:14])[CH3:13].[Na+]>>[C:12]([OH:15])(=[O:14])[CH:13]=[CH:1][C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Komponenten

Edukt 3

HCID 240Benzaldehyde

HCID 10038Ketene

HCID 517045Sodium Acetate

Produkt 1

HCID 87842-Propenoic acid, 3-phenyl-Ausbeute 40 %

Versuchsvorschrift

The reaction of benzaldehyde with ketene at 60° C. with the addition of sodium acetate and subsequent heating of the reaction product to the boiling point is known from Ind. Chem. 41, 768 (1949). Cinnamic acid is thereby obtained in a yield of 40%.