First Asymmetric Synthesis of (Un)saturated 1-Alkylbenzo[<i>c</i>]azepin-3-ones: Extension to the Corresponding Benzazepines
作者:David Dumoulin、Stéphane Lebrun、Eric Deniau、Axel Couture、Pierre Grandclaudon
DOI:10.1002/ejoc.200900365
日期:2009.8
A flexible route for the stereoselective synthesis of a variety of structurally diverse (1R)-1-alkyldihydro and tetrahydrobenzazepin(ones) has been developed. The key step is a highly diastereoselective 1,2-addition process applied to a stereopure aromatic hydrazone combined with a ring-closing metathesis reaction to secure the formation of the seven-membered azaheterocycle ring system.(© Wiley-VCH
已经开发了用于立体选择性合成各种结构不同的 (1R)-1-烷基二氢和四氢苯并氮杂的灵活路线。关键步骤是将高度非对映选择性 1,2-加成过程应用于立体纯芳香腙结合闭环复分解反应以确保形成七元氮杂杂环系统。 (© Wiley-VCH Verlag GmbH & Co. KGaA,69451 魏因海姆,德国,2009)