C-4 benzofuranylation of pyrazolones by a metal-free catalyzed indirect heteroarylation strategy

Abstract

A metal-free catalyzed indirect heteroarylation of pyrazolones with 2-(3-hydroxy-3,3-diarylprop-1-yn-1-yl)phenols has been developed, delivering a wide range of novel 4-benzofuran-substituted pyrazolone derivatives.