Asymmetric [3+2] Cycloaddition of Olefins with Morita–Baylis–Hillman Carbonates Catalyzed by BINOL-Based Bifunctional Phosphine
作者:Hai-Lei Cui、Xue Tang、Meng-Fan Li、Xing-Jie Xu、Yin Shi
DOI:10.1055/s-0037-1611752
日期:2019.4
series of novel BINOL-based phosphines. These bifunctional organocatalysts can be used in the [3+2] cycloaddition of electron-deficient olefins and Morita–Baylis–Hillman (MBH) carbonates. Moderate to excellent yields (up to >99%) and good to excellent enantioselectivities (up to 95% ee) can be obtained in the cycloaddition reaction of maleimides and MBH carbonates. The application of these novel phosphines
我们开发了一系列新型的基于 BINOL 的膦。这些双功能有机催化剂可用于缺电子烯烃和 Morita-Baylis-Hillman (MBH) 碳酸酯的 [3+2] 环加成。在马来酰亚胺和 MBH 碳酸酯的环加成反应中可以获得中等至优异的产率(高达 >99%)和良好至优异的对映选择性(高达 95% ee)。这些新型膦的应用可以进一步扩展到手性螺环吲哚的不对称合成(高达 85% ee)。本研究的结果表明 BINOL 部分在立体控制中起着重要作用。