Metal-Controlled, Regioselective, Direct Intermolecular α- or γ-Amination with Azodicarboxylates
作者:Xin Fu、He-Yuan Bai、Guo-Dong Zhu、Yan Huang、Shu-Yu Zhang
DOI:10.1021/acs.orglett.8b01183
日期:2018.6.15
A metal-controlled, regioselective intermolecular amination of unsaturated N-acylpyrazoles with azodicarboxylates is described. Under zinc catalysis, the N-acylpyrazole substrates undergo amination at the α-position of the N-acylpyrazole moiety. Conversely, with silver as the catalyst, the reaction gave γ-amination products. Both catalytic protocols provided alternative, convenient, and simple strategies
描述了不饱和N-酰基吡唑与偶氮二羧酸盐的金属控制的区域选择性分子间胺化。在锌催化下,N-酰基吡唑底物在N-酰基吡唑部分的α-位进行胺化。相反,以银为催化剂,反应得到γ-氨基化产物。两种催化方案都提供了有效,区域选择性地访问结构独特的含C-N键的化合物的替代,便捷和简单策略。该方法的合成效用通过克规模的实验以及随后的γ-氨基酸类似物的有效合成得到了说明。