Synthesis of Chiral Organocatalysts derived from Aziridines: Application in Asymmetric Aldol Reaction
作者:Shikha Gandhi、Vinod K. Singh
DOI:10.1021/jo8019863
日期:2008.12.5
We report the synthesis of a new series of highly efficient chiral organocatalysts derived via the regio- and stereoselective ring opening of chiral aziridines with azide anions. The catalysts have proved to be very efficient for a direct asymmetric aldol reaction, both with cyclic as well as acyclic ketones in brine with 2 mol % of catalyst loading, and afforded the products in excellent yields (up
我们报告了通过手性氮丙啶与叠氮化物阴离子的区域和立体选择性开环而衍生的一系列新的高效手性有机催化剂的合成。事实证明,该催化剂对于直接与环酮和无环酮在盐水中进行直接不对称羟醛反应非常有效,催化剂负载量为2 mol%,并以极高的收率(高达99%)和对映选择性(高达到> 99%)。所获得的手性羟醛加合物通过便利的途径进一步转化为手性氮杂环丁烷环。