Enantioselective α-Fluorination and Chlorination of β-Ketoesters by Cobalt Catalyst
作者:Motoi Kawatsura、Shunsuke Hayashi、Yuji Komatsu、Shuichi Hayase、Toshiyuki Itoh
DOI:10.1246/cl.2010.466
日期:2010.5.5
We demonstrated the cobalt-catalyzed asymmetric α-fluorination and α-chlorination of β-ketoesters. Both reactions were achieved using a catalytic amount of Co(acac)2 with (R,R)-Jacobsen’s salen ligand; α-fluorinated or α-chlorinated products were thus obtained with a good enentioselectivity.
我们展示了钴催化的不对称 α-氟化和 α-氯化 β-酮酯反应。这两个反应都是使用催化量的 Co(acac)2 与 (R,R)-Jacobsen's salen 配体实现的;从而以良好的烯选择性获得了 α-氟化或 α-氯化产物。