Optically Active Organometallic Complexes of Heptafulvalene and 1,2- Homoheptafulvalene.

Racemic and/or optically active 7-methyltropone-Fe(CO)3, tropone-Cr(CO)3, and endo- and exo-homotropone-Fe(CO)3 reacted with 8-oxoheptafulvene to afford the corresponding racemic and/or optically active heptafulvalene metal complexes, respectively. Endo- and exo-homoheptafulvalene-Fe(CO)3 reacted with TCNE to give [2+4]π and [2+8]π cycloadducts, respectively.