A temporary-bridge strategy for enantioselective organocatalyzed synthesis of aza-seven-membered rings
作者:Sébastien Goudedranche、David Pierrot、Thierry Constantieux、Damien Bonne、Jean Rodriguez
DOI:10.1039/c4cc07731h
日期:——
We report the first enantioselective organocatalyzed domino synthesis of azepane moieties. This temporary-bridge strategy is based on a conceptually original annulation of ambident electrophilic and 1,4-bis-nucleophilic alpha-ketoamides with 1,3-bis-electrophilic enals. The obtained oxygen-bridged azepanes can be selectively transformed into optically active azepanone, azepanol or azepanedione derivatives
我们报告了zezee部分的第一个对映选择性有机催化多米诺骨牌合成。这种临时桥策略基于概念上原始的环境亲电和1,4-双亲核α-酮酰胺与1,3-双亲电子烯醛的环化反应。可以将获得的氧桥联的氮杂环丙烷选择性地转化成具有高合成价值的光学活性的氮杂环庚烷,氮杂环丁烷或氮杂环丁烷衍生物。