A Three-Component Strategy for Benzoselenophene Synthesis under Metal-Free Conditions Using Selenium Powder
作者:Penghui Ni、Jing Tan、Wenqi Zhao、Huawen Huang、Fuhong Xiao、Guo-Jun Deng
DOI:10.1021/acs.orglett.9b00739
日期:2019.5.17
An efficient three-component benzoselenophenes formation has been developed from substituted indoles, acetophenones, and selenium powder under metal-free conditions. 2-Aryl indoles played an important role to promote benzoselenophene formation from acetophenone derivatives and selenium powder. One C–C and two C–Se bonds were selectively formed to provide 40 new benzoselenophenes in good yields.
<i>In Situ</i>
Preparation of Palladium Nanoparticles for C‐2 Selective Arylation of Indoles in Agro‐Waste Extract Based Mixed Solvents
作者:Yajun Sun、Rui Wang、Tianxiang Liu、Weiwei Jin、Bin Wang、Yonghong Zhang、Yu Xia、Chenjiang Liu
DOI:10.1002/ejoc.202100331
日期:2021.5.7
An in situ generation of palladiumnanoparticle catalyzed direct C−H arylation of indoles with iodoarenes for the synthesis of 2‐arylindoles in bio‐basedmixedsolvents is described.
A highly efficient and recyclable Fe<sub>3</sub>O<sub>4</sub> magnetic nanoparticle immobilized palladium catalyst for the direct C-2 arylation of indoles with arylboronic acids
作者:Lei Zhang、Pinhua Li、Can Liu、Jin Yang、Min Wang、Lei Wang
DOI:10.1039/c4cy00040d
日期:——
A highly efficient Fe3O4 magnetic nanoparticle (MNP) immobilized palladiumcatalyst was prepared and applied to the direct C-2 arylation of indoles with arylboronic acids. The reactions generated the corresponding cross-coupling products in good yields. In addition, the supported catalyst with low loading (2.0 mol%) showed high stability and could be recovered and reused 8 times without significant
制备了高效的Fe 3 O 4磁性纳米粒子(MNP)固定的钯催化剂,并将其用于吲哚与芳基硼酸的直接C-2芳基化。反应以良好的产率产生了相应的交叉偶联产物。另外,低负载量(2.0mol%)的负载型催化剂显示出高稳定性,并且可以被回收和再利用8次而没有明显的活性损失。