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 asymmetriccyclopropanation 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