Practical one-pot sequential procedure for the preparation of N-arylated 3,4-disubstituted pyrroles from alkenes
作者:Rui Zhu、Lixin Xing、Yantao Liu、Fangkun Deng、Xinyan Wang、Yuefei Hu
DOI:10.1016/j.jorganchem.2008.09.051
日期:2008.12
copper-catalyzed N-arylation of pyrrole proceeded sequentially in a single flask to give N-arylated 3,4-disubstituted pyrroles smoothly. Thus, a series of desired N-arylated pyrroles were prepared directly from the electron-deficient alkenes.
通过使用吨丁醇钠和Cs 2 CO 3作为混合基,面包车Leusen吡咯合成和铜催化Ñ吡咯-arylation在单个烧瓶依次进行,得到Ñ -arylated 3,4-二取代的吡咯顺利。因此,直接从缺电子的烯烃制备了一系列所需的N-芳基吡咯。
Synthesis and theoretical study of pyrrole formiate derivatives through ring contraction of 1,4-dihydropyridines
作者:Qiangwen Fan、Runzhi Sun、Zhichang Zhao、Hong Yan
DOI:10.1016/j.tet.2018.11.021
日期:2018.12
Pyrrole formiate derivatives were synthesized through ring contraction of corresponding 3-carboxylate-1,4-dihydropyridines (3-CDHPs) mediated by 2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPO). 2-Carboxylate-3-aryl-1H-pyrroles (2) and 3-carboxylate-4-aryl-1H-pyrroles (3) were obtained under readily accessible reaction conditions. To gain deep insights into this transformation, DFT calculations were carried