Phase Transfer Catalyzed Synthesis of Ferrocenoylcyclopropans

Abstract

1-Phenyl-2-aryl-3-ferrocenoylcyclopropanes 3a-f have been prepared in moderate yield by the cycloaddition of the ylide generated in situ from triphenylbenzylarsonium bromide 2 to 1-oxo-3-aryl-2-propenylferrocenes 1a-d and 1,1'-di(-1-oxo-3-aryl-2-propenyl)ferrocenes le-f under phase transfer catalystic conditions.