Silver Acetate/TF-BiphamPhos-Catalyzed endo-Selective Enantioselective 1,3-Dipolar Cycloaddition of Azomethine Ylides with Vinyl Phenyl Sulfone
作者:Gang Liang、Min-Chao Tong、Chun-Jiang Wang
DOI:10.1002/adsc.200900552
日期:2009.12
The first catalytic endo-selective 1,3-dipolar cycloaddition of azomethine ylides and vinyl phenyl sulfone has been developed successfully. The highly efficient silver acetate (AgOAc)/TF-BiphamPhos catalytic system exhibited high reactivity, excellent diastereoselectivity (>98:2), good enantioselectivity (67–92% ee) and broad substrate scope under mild conditions.
已成功开发了甲硫氨酸基化物和乙烯基苯基砜的第一个催化内选择性1,3-偶极环加成反应。高效乙酸银(AgOAc)/ TF-BiphamPhos催化系统在温和条件下表现出高反应活性,出色的非对映选择性(> 98:2),良好的对映选择性(67-92%ee)和广泛的底物范围。