Mild and efficient synthesis of indoles and isoquinolones<i>via</i>a nickel-catalyzed Larock-type heteroannulation reaction
作者:Wei-Zhi Weng、Jian Xie、Bo Zhang
DOI:10.1039/c8ob00795k
日期:——
A simple and efficient approach for the preparation of substituted indoles and isoquinolones via a nickel-catalyzed Larock-type heteroannulation reaction is reported. This transformation employed air-stable and inexpensive Ni(dppp)Cl2 as a precatalyst and Et3N as a mild base. Moreover, the reaction occurs efficiently under mild conditions, and a wide range of substituted indoles and isoquinolones bearing
Synthesis of indoles and polycyclic amides via ruthenium(<scp>ii</scp>)-catalyzed C–H activation and annulation
作者:Hui Lin、Shuai-Shuai Li、Lin Dong
DOI:10.1039/c5ob01788b
日期:——
Ruthenium(ii)-catalyzed oxidative coupling of NH protic amides with alkynes has been developed for the synthesis of a diversity of complex structures, such as N-acyl indole and tricyclic amide derivatives.
Mechanochemical indole synthesis by rhodium-catalysed oxidative coupling of acetanilides and alkynes under solventless conditions in a ball mill
作者:Gary N. Hermann、Celine L. Jung、Carsten Bolm
DOI:10.1039/c7gc00499k
日期:——
A mechanochemical indole synthesis by rhodium(III)-catalysed C–H bond functionalisation in a planetary mill has been developed. It occurs in the absence of any solvent, does not require additional heating and only needs catalytic quantities of Cu(OAc)2 in combination with dioxygen as terminal oxidant. Accordingly, the process represents a powerful and environmentally benign alternative to the common
Oxidative Annulation of Anilides with Internal Alkynes Using an (Electron‐Deficient η
<sup>5</sup>
‐Cyclopentadienyl)Rhodium(III) Catalyst Under Ambient Conditions
作者:Yuki Hoshino、Yu Shibata、Ken Tanaka
DOI:10.1002/adsc.201300884
日期:2014.5.5
A dinuclear (electron‐deficient η5‐cyclopentadienyl)rhodium(III) complex was synthesized on a preparative scale via the rhodium‐catalyzed cross [2+2+1] cyclotrimerization of silylacetylenes and twoalkynylesters, leading to substitutedsilylfulvenes, followed by reductive complexation with rhodium(III) chloride in ethanol. The thus obtained dinuclear (electron‐deficient η5‐cyclopentadienyl)rhodium(III)
Synthesis of indoles via palladium-catalyzed C–H activation of N-aryl amides followed by coupling with alkynes
作者:Feng Zhou、Xiuling Han、Xiyan Lu
DOI:10.1016/j.tetlet.2011.07.009
日期:2011.9
A convenient and efficient method for the construction of indole skeleton was developed via Pd-catalyzed C-H activation of N-aryl amides and subsequent coupling with alkynes. Both stoichiometric and catalytic versions have been successfully achieved. (C) 2011 Elsevier Ltd. All rights reserved.