Nucleophilic Phosphine-Catalyzed Intramolecular Michael Reactions of <i>N</i>-Allylic Substituted α-Amino Nitriles: Construction of Functionalized Pyrrolidine Rings via 5-<i>endo</i>-trig Cyclizations
作者:Da En、Gong-Feng Zou、Yuan Guo、Wei-Wei Liao
DOI:10.1021/jo500418s
日期:2014.5.16
Pyrrolidine rings are common moieties for pharmaceutical candidates and natural compounds, and the construction of these skeletons has received much attention. α-Amino nitriles are versatile intermediates in synthetic chemistry and have been widely used in the generation of multiple polyfunctional structures. Herein, a novel nucleophilic phosphine-catalyzed intramolecular Michael reaction of N-allylic
吡咯烷环是候选药物和天然化合物的常见部分,这些骨架的结构已引起广泛关注。α-氨基腈是合成化学中的通用中间体,已被广泛用于生成多个多功能结构。本文中,已经开发了新颖的亲核膦催化的N-烯丙基取代的α-氨基腈的分子内迈克尔反应,以通过5-内-trig有效地构建官能化的2,4-二取代的吡咯烷(N-杂环α-氨基腈)。环化。此外,还证明了吡咯烷合成的一锅法序列和功能化产物的后续转化。