作者:Wenhua Xie、Jianwen Fang、Jun Li、Peng George Wang
DOI:10.1016/s0040-4020(99)00791-7
日期:1999.11
derived from aromatic amines and hindered aliphatic aldehydes were also found to work well. Among the three diazo compounds examined, ethyl diazoacetate (EDA) and 3-nitrophenyl diazomethane were effective reagents for the aziridination. However, the reactions of ethyl diazoacetoacetate failed to give any desired product. Six lanthanides triflates as well as Sc(OTf)3 and Y(OTf)3 were tested as catalyst
在各种质子介质中研究了Ln(OTf)3催化的由亚胺和重氮化合物合成的氮丙啶。反应在温和条件下容易进行并且具有高度选择性,主要提供顺式氮丙啶。所用的亚胺通常是衍生自具有给电子或吸电子取代基的芳族醛和芳族胺的亚胺。还发现衍生自芳族胺和受阻脂族醛的N-苄基芳基醛亚胺和亚胺效果很好。在所研究的三种重氮化合物中,重氮乙酸乙酯(EDA)和3-硝基苯基重氮甲烷是用于叠氮化的有效试剂。但是,重氮乙酰乙酸乙酯的反应未能得到任何所需的产物。六种镧系元素三氟甲磺酸酯和Sc(OTf)测试3和Y(OTf)3作为叠氮化反应中的催化剂。还讨论了副产物的形成。