Treatment of (E)-3-(4-azidophenyl)- and (E)-3-(2-azidophenyl)acrylic acid with N-halosuccinimides in the presence of LiOAc afforded high yields of phenylazides containing (E)-2-halovinyl group. The latter were transformed to different phenyl-1,2,3-triazoles bearing (E)-halovinyl group by the CuI-catalyzed reaction of 1,3-dipolar cycloaddition.
在LiOAc存在下,(E)-3-(4-
叠氮苯基)和(E)-3-(2-
叠氮苯基)
丙烯酸与N-卤代琥珀
酰亚胺反应,高产率地得到了含有(E)-2-卤代
乙烯基的苯基
叠氮化合物。这些化合物通过CuI催化的1,3-偶极环加成反应,转化为不同含有(E)-卤代
乙烯基的苯基-
1,2,3-三唑。