Nickel‐Catalyzed Cyclizations of Enoates and Chiral Allenes: An Approach to Domoic Acid
作者:Ahmad S. ElDouhaibi、Refaie M. Kassab、Minsoo Song、John Montgomery
DOI:10.1002/chem.201100444
日期:2011.5.27
Come on allene, taloo‐rye‐aye! The first examples of nickel‐catalyzed enoate/chiral allene cyclization reactions are reported. In the coupling process employing dimethylzinc, densely functionalized pyrrolidines are obtained with stereoselective installation of the C3 and C4 chiral centers and the diene functionality at C4. The process provides rapid access to an advanced intermediate towards the synthesis
来吧阿伦,塔卢-黑麦-耶!报道了镍催化烯酸/手性丙二烯环化反应的第一个例子。在使用二甲基锌的偶联过程中,通过立体选择性安装 C3 和 C4 手性中心以及 C4 上的二烯官能团,获得了密集官能化的吡咯烷。该过程提供了对合成软骨藻酸的高级中间体的快速访问(见图)。