Carbolithiation of Simple Terminal and Strained Internal Alkenes by the Naphthalene and the Biphenyl Dianion: New Modes of Reactivity of Highly Reduced Organic Species in Solution
作者:Cristóbal Melero、Albert Guijarro、Vitus Baumann、Ángel J. Pérez-Jiménez、Miguel Yus
DOI:10.1002/ejoc.200700447
日期:2007.11
derived from arenes of high reduction potential (biphenyl, naphthalene) and Li(s) can carbometallate propene, isobutene or norbornene among other alkenes, in an intermolecular fashion. This reaction runs at room temperature to afford partially dearomatized alkylated aryl anions that are susceptible to further functionalization by electrophilic capture. This form of reactivity, typical of the arene dianion
源自具有高还原电位的芳烃(联苯、萘)和 Li(s)的二价阴离子可以以分子间的方式将丙烯、异丁烯或降冰片烯等烯烃进行碳金属化。该反应在室温下进行以提供部分脱芳构化的烷基化芳基阴离子,这些阴离子易于通过亲电捕获进一步官能化。这种形式的反应性,典型的芳烃二价阴离子,与这些配合物显示的特定碱金属样反应性不同,提供了区域和在许多情况下立体控制的产品。DFT 计算有助于确定该反应的区域化学结果,其中涉及一些最便宜的有机起始材料。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)