Coupling reactions of a cyclopentadienyl (Cp) ligand with a dienyl or alkenyl ligand on dienyl- or alkenyltitanocenes proceeded to give dienylcyclopentadiene or alkenylcyclopentadiene derivatives in good to high yields. Dienyltitanocene derivatives were prepared by protonation of bis(cyclopentadienyl)titanacyclopentadienes with carboxylic acids. Chlorodienyltitanocene derivatives were formed by the