Asymmetric Co(II)-Catalyzed Cyclopropanation with Succinimidyl Diazoacetate: General Synthesis of Chiral Cyclopropyl Carboxamides
作者:Joshua V. Ruppel、Ted J. Gauthier、Nicole L. Snyder、Jason A. Perman、X. Peter Zhang
DOI:10.1021/ol9005882
日期:2009.6.4
[Co(P1)] is an effective catalyst for asymmetric cyclopropanation with succinimidyl diazoacetate. The Co(II)-catalyzed reaction is suitable for various olefins, providing the desired cyclopropane succinimidyl esters in high yields and excellent diastereo- and enantioselectivity. The resulting enantioenriched cyclopropane succinimidyl esters can serve as convenient synthons for the general synthesis
[Co(P1)]是与重氮琥珀酰亚胺琥珀酸酯不对称环丙烷化的有效催化剂。Co(II)催化的反应适用于各种烯烃,以高收率和优异的非对映和对映选择性提供所需的环丙烷琥珀酰亚胺酯。所得的对映体富集的环丙烷琥珀酰亚胺酯可以用作常规合成旋光性环丙基羧酰胺的方便的合成子。