Palladium-Catalyzed Bis-Functionalization of Isatylidenes: A Facile Route towards Spiro-Indol-2-ones
作者:Sholly Clair George、Jubi John、Saithalavi Anas、Joshni John、Yoshinori Yamamoto、Eringathodi Suresh、K. V. Radhakrishnan
DOI:10.1002/ejoc.201000604
日期:——
construction of 3,3-disubstituted indol-2-ones from isatylidenes by utilizing amphiphilic bis-π-allylpalladium and related intermediates. The developed strategy is a new method for the quaternization of position 3 of the indol-2-one towards disubstituted functionalized indol-2-ones. These products were subjected to ring-closing metathesis towards the synthesis of spiro[cyclohexene-1,3′-indol]-2′-ones
通过利用两亲性双-π-烯丙基钯和相关中间体,开发了一种有效的协议,用于从 isatylidenes 构建 3,3-二取代 indol-2-ones。所开发的策略是一种将 indol-2-one 的 3 位季铵化为双取代的功能化 indol-2-one 的新方法。这些产物经过闭环复分解反应合成螺[环己烯-1,3'-吲哚]-2'-酮和螺[oxep-5-ene-2,3'-吲哚]-2'-酮,具有生物学意义。