sizes was demonstrated through the formation of a range of differentiated diamine products. Furthermore, this methodology was expanded to include N-aryl pyrrolidinone substrates with an enantiopure ester group at the 5-position, and α-amino piperidinones were prepared with complete retention of stereochemical information. The development of this chemistry has enabled the consideration of lactams as useful
已经发现一种操作简单的方案,该方案将
伯胺或仲胺与N-芳基取代的内酰胺偶联,以中等至高产率递送分化的二胺。该方法允许在Cp 2 ZrHCl(Schwartz试剂)存在下部分还原内酰胺,然后在所得的半胺和
伯胺或仲胺之间进行还原胺化。这些反应可以通过一锅法进行伸缩,以显着简化操作。通过形成一系列不同的二胺产物,证明了各种环尺寸的胺和取代的内酰胺的范围。此外,此方法已扩展为包括N在立体
化学信息完全保留的情况下,制备了在5位具有对映体纯酯基的-芳基
吡咯烷酮底物和α-
氨基
哌啶酮。该
化学方法的发展使得内酰胺被认为是有用的合成子。