Hf(IV)-Catalyzed Enantioselective Epoxidation of N-Alkenyl Sulfonamides and N-Tosyl Imines

作者：Olivares Romero Jose Luis; Li Zhi; Yamamoto Hisashi^*

来源：Journal of the American Chemical Society, 2012, 134(12): 5440-5443.

DOI：10.1021/ja211880s

Asymmetric epoxidation of allylic and homoallylic amine derivatives catalyzed by Hf(IV)-bishydroxamic acid complexes is described. Under similar conditions, aldimine and ketimine produced oxaziridines. The sulfonyl group is demonstrated to be an effective directing group for these transformations.

• 出版日期2012-3-28