Asymmetric Cyclopropanation of β,γ-Unsaturated α-Ketoesters with Stabilized Sulfur Ylides Catalyzed by C2-Symmetric Ureas Author:wangqiang Date:Dec 10, 2010 Read times: Congratulations! Ying's study on asymmetric cyclopropanation is published in J. Org. Chem. [link] PreNews: Congratulations! Xufan wins the "IKA" scolarship NextNews: Efficient and general synthesis of oxazino[4,3-a]indoles by cascade addition-cyclization reactions of (1H-indol-2-yl)methanols and vinyl sulfonium salts