Benzenepropanal → HCID 5368481, Verbindung
Reaktionsgleichung
[CH:1](=O)[CH2:2][CH2:3][C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1.[CH3:11][O:12][C:13](=[O:34])[CH:14]=P(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>C1COCC1>[C:4]1([CH2:3][CH2:2]/[CH:1]=[CH:14]/[C:13]([O:12][CH3:11])=[O:34])[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of hydrocinnamaldehyde (13.42 g, 0.1 mol) and methyl(triphenylphosphoranylidene)acetate (33.44 g, 0.1 mol) in THF was stirred at reflux for 20 hours. The reaction mixture was concentrated under vacuum and the residue was purified by flash chromatography using hexane:EtOAc::9:1. The desired product was obtained as a clear, pale yellow oil (8.0 g, 0.042 mol, 42%); 1H NMR (300 MHz, CDCl3) δ 7.3-7.2 (m, 2H), 7.2-7.1 (m, 3H), 7.1-6.9 (m, 1H), 5.85 (d, 1H, J=5.8 Hz), 3.75 (s, 3H), 2.8 (t, 2H, J=7.7 Hz), 2.55 (q, 2H, J=7.4 Hz); MS (NH3 -DCI) 191 (M+H)+.