D. Villemin et al., DRY SYNTHESIS UNDER MICROWAVE IRRADIATION - SYNTHESIS OF FERROCENYLENONES, Journal of organometallic chemistry, 484(1-2), 1994, pp. 27-31
Acetylferrocene and ferrocene carboxaldehyde were condensed with aldeh
ydes or ketones without solvent in presence of solid KOH. Slow reactio
ns were accelerated by microwave irradiation.