A Practical Gold-Catalyzed Route to 4-Substituted Oxazolidin-2-ones fromN-Boc Propargylamines
作者:Eun-Sun Lee、Hyun-Suk Yeom、Ji-Hyun Hwang、Seunghoon Shin
DOI:10.1002/ejoc.200700210
日期:2007.7
AuI-catalyzed cyclization of N-Boc propargylamines into 4-alkylidene oxazolidin-2-ones is described. This modularapproach provides access to a variety of nonproteogenic 4-substituted oxazolidinones that are important in asymmetric synthesis and biological applications. The current flexible route is characterized by low catalyst loading, mild conditions, and operational simplicity.(© Wiley-VCH Verlag
描述了 AuI 催化的 N-Boc 炔丙胺环化成 4-亚烷基 oxazolidin-2-ones。这种模块化方法提供了对在不对称合成和生物应用中很重要的各种非蛋白原性 4-取代恶唑烷酮的访问。当前的灵活路线的特点是催化剂负载量低、条件温和且操作简单。 (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)