Enantioselective [3 + 2] Cycloaddition of Allenes to Acrylates Catalyzed by Dipeptide-Derived Phosphines: Facile Creation of Functionalized Cyclopentenes Containing Quaternary Stereogenic Centers
作者:Xiaoyu Han、Youqing Wang、Fangrui Zhong、Yixin Lu
DOI:10.1021/ja1106282
日期:2011.2.16
A new family of dipeptide-based chiral phosphines was designed and prepared. D-Thr-L-tert-Leu-derived catalyst 4c promoted [3 + 2] cycloaddition of allenoates to α-substituted acrylates in a regiospecific and stereoselective manner, furnishing functionalized cyclopentenes with quaternary stereogenic centers in high yields and with excellent enantioselectivities.
设计并制备了一个新的基于二肽的手性膦家族。D-Thr-L-tert-Leu 衍生的催化剂 4c 以区域专一性和立体选择性的方式促进了烯丙酸酯的 [3 + 2] 环加成反应到 α-取代的丙烯酸酯,以高产率和优异的对映选择性提供具有四元立体中心的官能化环戊烯。