Free radical-mediated vinyl amination: a mild, general pyrrolidinyl enamine synthesis
作者:Benjamin M. Nugent、Amie L. Williams、E.N. Prabhakaran、Jeffrey N. Johnston
DOI:10.1016/j.tet.2003.04.003
日期:2003.11
The complete scope of free radical-mediated vinyl amination is described, using 5-exo-trig cyclizations of vinyl radicals to the nitrogen of azomethines. The focus is primarily on N,N-dialkyl enamines since their nucleophilicity renders them the most challenging enamines to synthesize using redox conditions. These studies establish several encouraging precedents for the broader application of this
描述了自由基介导的乙烯基胺化的完整范围,使用了乙烯基自由基对偶氮甲碱氮的5-外-trig环化。焦点主要集中在N,N-二烷基烯胺上,因为它们的亲核性使其成为使用氧化还原条件合成最具挑战性的烯胺。这些研究为该策略的广泛应用建立了一些令人鼓舞的先例。