One-pot synthesis of polysubstituted indoles from aliphatic nitro compounds under mild conditions
作者:Christopher A. Simoneau、Alexis M. Strohl、Bruce Ganem
DOI:10.1016/j.tetlet.2007.01.031
日期:2007.3
Polysubstitutedindoles can be prepared directly from functionalized nitroalkanes under very mildly acidic conditions in a simple, one-pot, two-stage procedure.
We describe a photocatalyzed transformation for the synthesis of the indolo[2,1-a]isoquinoline core structure. This redox neutral reaction features mild reaction conditions and exceptional functional group tolerance. A series of valuable indolo[2,1-a]isoquinoline derivatives bearing various functional groups were synthesized using this method in good to excellent yields.
我们描述了吲哚[2,1- a ]异喹啉核心结构的合成的光催化转化。该氧化还原中性反应具有温和的反应条件和出色的官能团耐受性。使用该方法以良好至优异的产率合成了一系列带有各种官能团的有价值的吲哚[2,1- a ]异喹啉衍生物。
Indole Synthesis by Rhodium(III)-Catalyzed Hydrazine-Directed CH Activation: Redox-Neutral and Traceless by NN Bond Cleavage
作者:Dongbing Zhao、Zhuangzhi Shi、Frank Glorius
DOI:10.1002/anie.201306098
日期:2013.11.18
Fishing for complements! There is an alternative to the useful Fischer indole synthesis. The new method utilizes the same retrosynthetic disconnection but is based on a RhIII‐catalyzed directed CH activation step and a successive coupling with alkynes.
Et<sub>3</sub>SiH + KO<sup>t</sup>Bu provide multiple reactive intermediates that compete in the reactions and rearrangements of benzylnitriles and indolenines
作者:Andrew J. Smith、Daniela Dimitrova、Jude N. Arokianathar、Kenneth F. Clark、Darren L. Poole、Stuart G. Leach、John A. Murphy
DOI:10.1039/d0sc04244g
日期:——
unusual because it generates multiple different types of reactive intermediates simultaneously that provide access to (i) silyl radical reactions, (ii) hydrogen atom transferreactions to closed shell molecules and to radicals, (iii) electron transfer reductions and (iv) hydride ion chemistry, giving scope for unprecedented outcomes. Until now, reactions with this reagent pair have generally been explained
A nickel-catalyzed heteroannulation has been developed where o-haloanilines react with alkynes to afford 2,3-disubstituted indoles. IPr (1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene) was found to be an effective ligand for the reaction.