An exo- and Enantioselective 1,3-Dipolar Cycloaddition of Azomethine Ylides with Alkylidene Malonates Catalyzed by a N,O-Ligand/Cu(OAc)2-Derived Chiral Complex
作者:Ming Wang、Zheng Wang、Yu-Hua Shi、Xiao-Xin Shi、John S. Fossey、Wei-Ping Deng
DOI:10.1002/anie.201007960
日期:2011.5.16
An exo‐lent catalyst: An N,O‐ligand/Cu(OAc)2 derived chiral complex is an excellent catalyst for inducing asymmetry in the catalytic enantioselective 1,3‐dipolar cycloadditions of azomethine ylides with various alkylidene malonates. A series of highly functionalized exo‐pyrrolidines were obtained in excellent yields (80–99 %) and enantioselectivities (91–99 % ee; see scheme; M.S.: molecular sieve)
一个 外-lent催化剂:一个N,O -配体/铜(OAC)2衍生的手性络合物是用于与各种亚烷基丙二酸酯甲亚胺叶立德的催化对映选择性1,3-偶极环加成诱导不对称的优良催化剂。获得了一系列高度官能化的外吡咯烷酮,收率优异(80–99%)和对映选择性(91–99% ee;参见方案; MS:分子筛)。