Zirconoarylation of alkynes through p-chloranil-promoted reductive elimination of arylzirconates

Abstract

A novel method for the zirconoarylation of alkynes was developed. TCQ-promoted reductive elimination of arylzirconate [LiCp2ZrAr(RC≡CR)], which was prepared by the reaction of zirconocene–alkyne complexes with aryllithium compounds, afforded trisubstituted alkenylzirconocenes. This reaction can afford multi-substituted olefins with high stereoselectivity.

Keywords

• alkyne
• multicomponent
• reductive elimination
• zirconate
• zirconoarylation