Convenient Synthesis of 2-Aryl-1-haloindolizines from Pyridinium Salts and 2-Aryl-1,1-dihaloalk-1-enes
作者:Chunxiang Kuang、Qing Yang、Yiwen Yang、Hui Jin
DOI:10.1055/s-0030-1260215
日期:2011.11
2-Aryl-1-haloindolizines were synthesized from pyridinium salts and 2-aryl-1,1-dihaloalk-1-enes using a DBU/THF system. 2-Aryl-1,1-dihaloalk-1-enes containing electron-withdrawing or -donating groups were efficiently converted into the corresponding 2-aryl-1-haloindolizines in moderate to excellent yields. 2-aryl-1-haloindolizines - pyridinium - 1,1-dihaloalk-1-enes - haloalkyne - 1,3-dipolar cycloaddition
使用DBU / THF系统由吡啶鎓盐和2-芳基-1,1-二卤代烷-1-烯合成2-芳基-1-卤代吲哚并酮。含有吸电子或供电子基团的2-芳基-1,1-二卤代-1-烯被有效地转化为相应的2-芳基-1-卤代吲哚并中等产量。 2-芳基-1-卤代吲哚并咪唑-吡啶鎓-1,1-二卤代烷-1-烯-卤代炔-1,3-偶极环加成