The First Azacyclopentenyl Carbinyl Radical Isomerizations (ACCRI): Independent Use of Steric and Electronic (Polarization) Effects as Gating Elements
作者:Rajesh Viswanathan、Daniel Mutnick、Jeffrey N. Johnston
DOI:10.1021/ja029426z
日期:2003.6.1
the azacyclopentenyl carbinyl radical isomerization are described within a series of enantiomerically enriched 2-substituted indolines, a substructure found extensively in both heterocyclic and natural product chemistry. The isomerization was identified by the varying loss of enantiomeric enrichment (ee) of imines during aryl radical cyclizations to azomethine nitrogen. Independent modification of
氮杂环戊烯基羧基自由基异构化的第一个例子在一系列对映体富集的 2-取代二氢吲哚中进行了描述,该亚结构广泛存在于杂环和天然产物化学中。异构化是通过芳基环化为偶氮甲碱氮期间亚胺的对映体富集 (ee) 的不同损失来确定的。环取代基的空间和电子性质的独立修饰揭示了对这些变量的全方位敏感性,并最终定义了这些效应作为门控元素的用途。还给出了一个例子,其中 1,4-氨基转移是通过异构化机制实现的。