Cross-metathesis of α-methylene-β-lactams: the first tetrasubstituted alkenes by CM
作者:Yanke Liang、Ravinder Raju、Tri Le、Christopher D. Taylor、Amy R. Howell
DOI:10.1016/j.tetlet.2008.12.060
日期:2009.3
α-Alkylidene-β-lactams have been prepared in good to excellent yields by olefin cross-metathesis. Electron-poor α-methylene-β-lactams undergo cross-metathesis more rapidly and efficiently than more electron-rich analogs. Significantly, tetrasubstituted alkenes have for the first time been accessed by CM reactions.
α-亚烷基-β-内酰胺已通过烯烃交叉复分解以良好至优异的产率制备。贫电子的α-亚甲基-β-内酰胺比富电子的类似物能更快,更有效地进行交叉复分解。重要的是,四取代的烯烃首次通过CM反应获得。