作者:Ze-Yu Tian、Xiao-Xia Ming、Han-Bing Teng、Yu-Tian Hu、Cheng-Pan Zhang
DOI:10.1002/chem.201802269
日期:2018.9.18
primary amines under the standard conditions, the bis(N‐phenyl) products were predominantly formed. This method was also applicable to the synthesis of bioactive N‐phenyl amino acid derivatives. The control experiments, the deuterium labelling study, and the presence of regioisomers of N‐arylated products when using 4‐substituted triarylsulfonium triflates suggested that the reaction might proceed through
本文介绍了一种简单有效的三芳基ulf三氟甲磺酸酯对各种胺进行无过渡金属N-芳基化的方法。在t BuOK或KOH存在下,脂族和芳族胺均在80°C下平稳转化,从而以高至高收率获得了相应的单N芳基化产物。反应物的摩尔比和碱的选择对反应有很大的影响。当在标准条件下将大量过量的[Ph 3 S] [OTf]和t BuOK用于伯胺时,主要形成了双(N-苯基)产物。该方法也适用于生物活性氮的合成-苯基氨基酸衍生物。对照实验,氘标记研究以及使用4-取代的三芳基ulf三氟甲磺酸酯时N芳基化产物的区域异构体的存在表明,该反应可能会通过芳烃中间体进行。本方案证明,三芳基ulf盐在C Ar -N键的构建中是通用的芳基化试剂。