Pinacolone → HCID 53767202, Verbindung
Reaktionsgleichung
[Cl:1][C:2]1[CH:16]=[C:15]([Cl:17])[CH:14]=[CH:13][C:3]=1[CH2:4]P(=O)(OCC)OCC.[CH3:18][C:19](=O)[C:20]([CH3:23])([CH3:22])[CH3:21]>C1(C)C=CC=CC=1>[Cl:1][C:2]1[CH:16]=[C:15]([Cl:17])[CH:14]=[CH:13][C:3]=1[CH:4]=[C:19]([CH3:18])[C:20]([CH3:23])([CH3:22])[CH3:21]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
29.7 g (0.1 mol) of diethyl 2,4-dichlorobenzylphosphonate, 10 g (0.1 mol) of pinacolone, 12 g (0.1 mol) of potassium t-butylate and 300 ml of absolute toluene are heated at the boiling point in a nitrogen atmosphere for 20 hours. The solution is cooled, washed with 2 80 ml portions of water, dried over sodium sulphate and freed from the solvent in vacuo. After the residue has been distilled, 15 g (69.7% of theory) of 1-(2,4-dichlorophenyl)-2,3,3-trimethylbut-1-ene of boiling point 85° C. under 0.13 mbar are obtained.