Synthesis of phenyl azides bearing (E)-2-halovinyl group
作者:Wensheng Zhang、Chunxiang Kuang、Qing Yang
DOI:10.1007/s11164-011-0323-x
日期:2012.1
A series of phenyl azides bearing (E)-2-halovinyl groups were synthesized in high yields by treatment of (E)-3-(4-azidophenyl)- and (E)-3-(2-azidophenyl)acrylic acid with N-halosuccinimide in the presence of LiOAc. (E)-4-(2-bromovinyl) phenyl azide, one of the synthesized intermediates, was selected to transform to a diverse range of phenyl-1, 2, 3-triazoles bearing (E)-4-(2-bromovinyl) groups by Cu(I)-catalyzed 1,3-dipolar cycloaddition reaction.
The Use of Calcium Carbide in the Synthesis of 1-Monosubstituted Aryl 1,2,3-Triazole via Click Chemistry
作者:Chunxiang Kuang、Yubo Jiang、Qing Yang
DOI:10.1055/s-0029-1218346
日期:2009.12
The synthesis of 1-monosubstituted aryl 1,2,3-triazoles was achieved using calcium carbide as a source of acetylene. The copper-catalyzed 1,3-dipolar cycloaddition reactions were carried out without nitrogen protection and in a MeCN-H 2 O mixture. The yields ranged from moderate to excellent. The reaction conditions were found to be uccessful for aryl azide reactants, including analogues with various
1-单取代芳基1,2,3-三唑的合成是使用碳化钙作为乙炔来源实现的。铜催化的 1,3-偶极环加成反应在没有氮保护的情况下在 MeCN-H 2 O 混合物中进行。产量从中等到极好。发现反应条件对于芳基叠氮化物反应物是成功的,包括具有各种官能度的类似物。