Asymmetric Disulfonimide-Catalyzed Synthesis of δ-Amino-β-Ketoester Derivatives by Vinylogous Mukaiyama-Mannich Reactions
作者:Qinggang Wang、Manuel van Gemmeren、Benjamin List
DOI:10.1002/anie.201407532
日期:2014.12.1
organocatalytic asymmetric synthesis of δ‐amino‐β‐ketoester derivatives has been developed. A chiral disulfonimide (DSI) serves as a highly efficient precatalyst for a vinylogous Mukaiyama–Mannich reaction of readily available dioxinone‐derived silyloxydienes with N‐Boc‐protected imines, delivering products in excellent yields and enantioselectivities. The synthetic utility of this reaction is illustrated
已开发出δ-氨基-β-酮酸酯衍生物的有机催化不对称合成。手性二磺酰亚胺(DSI)可作为易得的二恶英酮衍生的甲硅烷氧基二烯与N-Boc保护的亚胺的乙烯基类Mukaiyama-Mannich反应的高效预催化剂,可提供出色的收率和对映选择性。该反应的合成实用各种变换中示出,包括一个新的C C键形成反应,其提供对映体富集有用构建块。该方法适用于(-)-lasubin的形式化合成。