Zirconium-Catalyzed Enantioselective [3+2] Cycloaddition of Hydrazones to Olefins Leading to Optically Active Pyrazolidine, Pyrazoline, and 1,3-Diamine Derivatives
作者:Yasuhiro Yamashita、Shū Kobayashi
DOI:10.1021/ja049498l
日期:2004.9.1
conducted in high yields with high enantioselectivities using a chiral zirconium catalyst. These reactions open ways to synthetically and biologically important pyrazoline, pyrazolidine, and 1,3-diamine derivatives. Further, several experiments suggested that the reactions proceeded via concerted pathways.
使用手性锆催化剂,腙与外部烯烃的不对称 [3+2] 环加成反应以高产率和高对映选择性成功进行。这些反应为合成和生物学上重要的吡唑啉、吡唑烷和 1,3-二胺衍生物开辟了道路。此外,一些实验表明反应是通过协同途径进行的。