Selective halogen-lithium exchange of 1,2-dihaloarenes for successive [2+4] cycloadditions of arynes and isobenzofurans

Abstract

Successive [2+4] cycloadditions of arynes and isobenzofurans by site-selective halogen-lithium exchange of 1,2-dihaloarenes were developed, allowing the rapid construction of polycyclic compounds which serve as a useful synthetic intermediates for the preparation of various polyacene derivatives.