1-(Triphenylphosphoranylidene)acetone → HCID 57147667, Verbindung
Reaktionsgleichung
[CH2:1]([O:8][C:9]1[CH:14]=[CH:13][C:12]([CH2:15][CH2:16][CH:17]=O)=[CH:11][CH:10]=1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:19]([CH:22]=P(C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)(=[O:21])[CH3:20]>O1CCCC1>[CH2:1]([O:8][C:9]1[CH:10]=[CH:11][C:12]([CH2:15][CH2:16][CH:17]=[CH:20][C:19](=[O:21])[CH3:22])=[CH:13][CH:14]=1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A solution of 21.2 g of 3-(p-benzyloxyphenyl)propionaldehyde and 30.9 g of acetylmethylenetriphenylphosphorane in 120 ml of tetrahydrofuran was heated under reflux for 4.5 hours, the solvent was then evaporated and the residual crystals were recrystallized from a mixture of n-hexane and ether (5:1) to give 26.1 g of the desired compound melting at 70°-72° C.