A substrate-dependent reaction of 1-aryl-2-alkyl-1,2-diketones with 2-aroyl-1-chlorocyclopropanecarboxylates: selective access to 2′,5′-dicyclopropoxy-1,1′:4′,1′′-teraryls and pentafulvenes

An interesting substrate-controlled domino approach to 2′,5′-dicyclopropoxy-1,1′:4′,1′′-teraryls and 6-hydroxypentafulvenes from a wide range of 1,2-diketones and 2-aroyl-1-chlorocyclopropanecarboxylates promoted by Cs 2 CO 3 is reported.