One-pot synthesis of 1,2,4,5-tetrasubstituted imidazoles by a tandem three-component reaction of hydroxylamines, aldehydes and 2-azido acrylates
作者:Bao Hu、Ning Ai、Zhao Wang、Xiaoliang Xu、Xiaonian Li
DOI:10.3998/ark.5550190.0013.621
日期:——
The reaction of nitrones, formed in situ by reaction of hydroxylamines and aldehydes, with 2azido acrylates results in the formation of 1,2,4,5-tetrasubstitutedimidazoles has been developed. This three-componentreaction allows for the formation of a diverse array of imidazole derivatives with moderate to excellent yields.
ZrCl<sub>4</sub>-promoted facile synthesis of indole derivatives
作者:J. Tummatorn、M. P. Gleeson、S. Krajangsri、C. Thongsornkleeb、S. Ruchirawat
DOI:10.1039/c4ra02158d
日期:——
Zirconium(iv) chloride effectively activates nitrogen (N2) extrusion from aryl azidoacrylates followed by annulation to provide the desired indole products in moderate to good yields.