Cobalt(II)-Catalyzed Bis-isocyanides Insertion Reactions with Boric Acids and Sulfonyl Azides <i>via</i>
Nitrene Radical Coupling
作者:Zheng-Yang Gu、Rong Zhang、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1002/cjoc.201800307
日期:2018.11
A Co(II)‐catalyzed effective synthesis of amidinium imine derivatives from the reaction of isocyanides and boric acids using organic azides as nitrene source has been developed. This protocol provides a new, environment‐friendly and simple strategy to construct amidinium imine derivatives with a range of substrates without any oxidants and additives.
achieved via a mild electrochemical oxidative CH/NH functionalization/intramolecular annulations with isocyanides in undivided cell equipped with a nickel cathode. In the presence of earth abundant cobalt catalyst, versatile iminoisoindolinone derivatives obtained in good yields and in a sustainable manner by using electricity as an oxidant in place of stoichiometric amount of silver and copper salts.
在配备镍阴极的未分隔电池中,通过温和的电化学氧化C H / N H功能化/分子间环化反应与异氰化物,已实现了功能化亚氨基异吲哚啉酮衍生物的有效合成。在富含土的钴催化剂的存在下,通过使用电代替化学计量的银和铜盐作为氧化剂,可以以高收率和可持续的方式获得通用的亚氨基异吲哚啉酮衍生物。
Reported herein is a palladium-catalyzed secondary benzylic imidoylative Negishi reaction leveraging the sterically bulky aromatic isocyanides as the imine source. This method allows the facile access of alkyl-, (hetero)aryl-, and alkynylzinc reagents to afford various α-substituted phenylacetone products under mild acidic hydrolysis, which are ubiquitous motifs in many pharmaceuticals and biologically
Cobalt(II)-Catalyzed Synthesis of Sulfonyl Guanidines via Nitrene Radical Coupling with Isonitriles: A Combined Experimental and Computational Study
作者:Zheng-Yang Gu、Yuan Liu、Fei Wang、Xiaoguang Bao、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1021/acscatal.7b00798
日期:2017.6.2
A Co(II)-catalyzed synthesis of sulfonyl guanidines by using amines, isonitriles, and organic azides as nitrene sources has been developed. This protocol provides an environmentally friendly and simple strategy for the synthesis of sulfonyl guanidine derivatives by employing a range of substrates and will find potential applications in organic synthesis. The computational and EPR studies suggested
Cobalt(<scp>ii</scp>)-catalyzed bis-isocyanide insertion reactions with sulfonyl azides via nitrene radicals: chemoselective synthesis of sulfonylamidyl amide and 3-imine indole derivatives
作者:Zheng-Yang Gu、Jing-Hao Li、Shun-Yi Wang、Shun-Jun Ji
DOI:10.1039/c7cc06531k
日期:——
chemoselective Co(II)-catalyzed effective synthesis of sulfonylamidyl amide and 3-imine indole derivatives by using isocyanides and sulfonylazides has been developed. This protocol provides a new, environmentally friendly and simple strategy for the efficient synthesis of the sulfonylamidyl amide and 3-imine indole derivatives with a wide range of substrates in the absence of any oxidants and additives.