Jr. Porter et Ml. Snapper, Formation of carbon-carbon bonds using iron tricarbonyl(eta(4)-cyclobutadienyl)-stabilized carbonium ions, SYNTHESIS-S, 1999, pp. 1407-1410
Tricarbonyl(eta(4)-cyclobutadienyl)iron stabilized carbocations have been s
hown to be effective electrophiles with a variety of nucleophilic alkenes i
n a new Lewis acid-mediated carbon-carbon bond forming reaction.