A solvent-free protocol for the synthesis of β-amino esters and nitriles has been developed via conjugate addition of amines to electron-deficient alkenes promoted on silica. The silica surface may be recycled. Both aliphatic and aromatic primary or secondary amines worked efficiently to yield the desired adducts in good to excellent yields.
一种无溶剂的合成β-
氨基酯和腈的方案已通过
氨与电子缺乏的烯烃在
硅土上促进的共轭加成反应开发。
硅土表面可重复使用。饱和和芳香性的初级或次级胺均有效工作,能在良好至优异的产率下得到所需的加成物。