Phosphine-Catalyzed Highly Enantioselective [3 + 3] Cycloaddition of Morita–Baylis–Hillman Carbonates with C,N-Cyclic Azomethine Imines
作者:Lei Zhang、Honglei Liu、Guanyu Qiao、Zhanfeng Hou、Yang Liu、Yumei Xiao、Hongchao Guo
DOI:10.1021/jacs.5b01138
日期:2015.4.8
The first phosphine-catalyzed highly enantioselective [3 + 3] cycloaddition of Morita-Baylis-Hillman carbonates with C,N-cyclic azomethine imines is described. Using a spirocyclic chiral phosphine as the catalyst, a novel class of pharmaceutically interesting 4,6,7,11b-tetrahydro-1H-pyridazino[6,1-a]iso-quinoline derivatives were obtained in high yields with good to excellent diastereoselectivities
描述了第一个膦催化的 Morita-Baylis-Hillman 碳酸酯与 C,N-环状偶氮甲亚胺的高度对映选择性 [3 + 3] 环加成反应。使用螺环手性膦作为催化剂,以高产率获得了一类新的具有药学意义的 4,6,7,11b-四氢-1H-哒嗪并[6,1-a]异喹啉衍生物,具有良好到优异的非对映选择性和极其出色的对映选择性 (98->99% ee)。