Efficient synthesis of fluorinated α- and β-amino nitriles from fluoroalkylated α,β-unsaturated imines
作者:Francisco Palacios、Ana M. Ochoa de Retana、Sergio Pascual、Guillermo Fernández de Trocóniz
DOI:10.1016/j.tet.2010.12.046
日期:2011.2
A simple and efficient synthesis of fluoroalkylated α-amino nitrile (4) derivatives by regioselective 1,2-addition of trimethylsilyl cyanide to fluoroalkylated α,β-unsaturated imines (1) is described. Fluoroalkylated β-amino nitriles (7) are also prepared by regioselective 1,2-addition of α-carbanions derived from acetonitrile to fluoroalkylated α,β-unsaturated imines (1). Fluoroalkylated α-(4) and
描述了通过将三甲基甲硅烷基氰化物区域选择性地1,2-加成到氟代烷基化的α,β-不饱和亚胺(1)上的一种简单而有效的合成氟代烷基化的α-氨基腈(4)衍生物。氟烷基化的β-氨基腈(7)也可以通过将乙腈衍生的α-碳原子区域选择性地1,2-加成到氟代烷基化的α,β-不饱和亚胺(1)中来制备。氟烷基化的α-(4)和β-氨基腈(7)也可以通过“一锅法”的方法来制备,方法是使烯氨基膦酸酯2与BuLi反应,添加醛,然后添加三甲基甲硅烷基氰化物或衍生自乙腈的α-碳二酮。α-(的碱性水解4)和β-氨基腈(7)得到氟代烷基化的α-(5)和β-氨基酸(8)。