Cu(I)-Catalyzed Highly Enantioselective [3 + 3] Cycloaddition between Two Different 1,3-Dipoles, Phthalazinium Dicyanomethanides and Iminoester-Derived Azomethine Ylides
作者:Chunhao Yuan、Honglei Liu、Zhenzhen Gao、Leijie Zhou、Yalin Feng、Yumei Xiao、Hongchao Guo
DOI:10.1021/ol503169d
日期:2015.1.2
The Cu(I)-catalyzed highly enantioselective [3 + 3] cycloaddition between two different 1,3-dipoles, phthalazinium dicyanomethanides and iminoester-derived azomethine ylides, has been achieved under mild reaction conditions, providing novel chiral heterocyclic compounds, 2,3,4,11b-tetrahydro-1H-pyrazino[2,1-a]phthalazine derivatives, in high yields with excellent diastereo- and enantioselectivies (up
在温和的反应条件下,已实现了Cu(I)催化的两个不同的1,3-偶极,酞菁双氰胺和亚氨基酯衍生的偶氮甲碱的高对映选择性[3 + 3]环加成反应,提供了新颖的手性杂环化合物2,3 ,4,11b-四氢-1 H-吡嗪并[ 2,1- a ]酞嗪衍生物,高收率,具有出色的非对映和对映选择性(高达99%收率,99%ee,> 20:1 dr)。