New Insights into the Chemistry ofgem-Bis(phosphonates): Unexpected Rearrangement of Michael-Type Acceptors
作者:Sergio H. Szajnman、Guadalupe García Liñares、Pablo Moro、Juan B. Rodriguez
DOI:10.1002/ejoc.200500097
日期:2005.9
mechanistic studies were conducted in an attempt to explain the mechanisms involved. To the best of our knowledge, this reaction constitutes a remarkable novelty, being the first reported rearrangement reaction of an epoxy derivative of a gem-bis(phosphonate). In addition, evidence supporting the involvement of a radical or a polar mechanism, depending on the nature of the nucleophile, is discussed. (©
研究了四乙基亚乙基双(膦酸酯)作为迈克尔受体与不同亲核试剂的使用。发现在某些情况下,该化合物会去除磷酸盐,这取决于亲核试剂的性质。还研究了其作为亲电子试剂的环氧衍生物四乙基环氧亚芳基双(膦酸酯)的化学行为。无论使用何种亲核试剂,该化合物都经历了非常有吸引力且显着的膦酸酯-磷酸酯重排,产生了烯醇磷酸酯 8。进行了不同的机理研究以试图解释所涉及的机制。据我们所知,该反应具有非凡的新颖性,是首次报道的双(膦酸酯)环氧衍生物的重排反应。此外,讨论了支持自由基或极性机制参与的证据,这取决于亲核试剂的性质。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)