Three-Component Reactions of Arynes, Amines, and Nucleophiles via a One-Pot Process

An unprecedented three-component reaction of arynes, tertiary amines, and nucleophiles has been demonstrated through ammonium salt intermediates. This protocol allows access to tertiary aniline derivatives containing the piperazine motif in good-to-excellent yields. Expansively, this reaction can produce biologically important 2-(4-phenylpiperazin-1-yl)­ethyl-containing molecules using arynes, 1,4-diazabicyclo(2.2.2)­octane (DABCO), and nucleophiles via a one-pot process