作者:Marc Lafrance、David Lapointe、Keith Fagnou
DOI:10.1016/j.tet.2008.01.057
日期:2008.6
been evaluated in the context of intramolecular direct arylation reactions. Under the optimal conditions, arylation of simple arenes can be performed under very mild conditions, with heating to 50 °C. The role of the pivalic acid additive is rationalized by invoking a concerted palladation–deprotonation pathway where the pivalate is behaving as either an intramolecular base from the palladium metal or
配体,化学计量的碱和添加剂的影响已在分子内直接芳基化反应的背景下进行了评估。在最佳条件下,简单的芳烃芳构化可以在非常温和的条件下进行,加热到50°C。新戊酸添加剂的作用可通过调用协调的palladation-去质子化途径来合理化,在该途径中,新戊酸酯以钯金属的分子内碱或分子间去质子的方式表现为与Echavarren和Maseras先前描述的方式类似的方式。