Benzophenone → Diphenyl Fulvene

Reaktionsgleichung

[C:1]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1)(=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH:15]1[CH2:19]C=[CH:17][CH:16]=1.[CH2:20](O)C.[O-]CC.[Na+]>>[C:11]1([C:12]2[CH:13]=[CH:14][C:9](=[CH2:20])[C:1]=2[C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)[CH:10]=[CH:17][CH:16]=[CH:15][CH:19]=1

Komponenten

Edukt 3

HCID 3102Benzophenone

HCID 7612Cyclopentadiene

HCID 23706232Ethanol sodium ethoxide

Produkt 1

HCID 22238549Diphenyl Fulvene

Versuchsvorschrift

About equal molar amounts of benzophenone and cyclopentadiene are reacted in an ethanol/sodium ethoxide solution according to the method suggested by Kice, JACS 80, 3796 (1958). The dark red crystals obtained are recrystallized from ethanol and dried under vacuum.