Abstract
A series of heterocyclic triaryl methanols were prepared and reacted with enol silyl ethers in the presence of ZnCl2. This reaction gave a variety of functionalized heterocyclic products. A mechanism is proposed involving formation triaryl carbocation electrophiles with delocalization of positive charge to positions in the heterocyclic rings. Nucleophilic attack then occurs at a ring position of the heterocycle.
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