Three-Component Reactions of Arynes, Amines, and Nucleophiles via a One-Pot Process
作者:Gyoungwook Min、Jeongseob Seo、Haye Min Ko
DOI:10.1021/acs.joc.8b01058
日期:2018.8.3
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
Two original complexes featuring an (amino)(phosphino)carbene η2-bonded to the metal have been obtained in 60% and 80% yields, by addition of the corresponding stablecarbene to PdCl2(cod) and NiCl2(PPh3)2, respectively. Both complexes have been fully characterized including X-ray diffraction studies. The catalytic activity of the palladium complex has been evaluated for aryl amination reactions.
Enhancing the Synthetic Utility of 3-Haloaryne Intermediates by Their Efficient Generation from Readily Synthesizable <i>ortho</i>-Iodoaryl Triflate-type Precursors
Generation of 3-haloarynes from o-iodoaryl triflate-type precursors is reported. The method enables the generation of 3-fluorobenzyne with significantly high electrophilicity at −78 °C, allowing the formation of a three-component-coupled product between 3-fluorobenzyne, tetrahydrofuran that is used as a solvent, and a thiol. The ready availability of the precursors and the orthogonality in the conditions