A Convenient Synthesis Of 1-Acyl Indolizines by 1,3-Dipolar Cycloaddition Reactions of Pyridinium Ylides and α,β-Unsaturated Aldehydes or Ketones in the Presence of Tetrakis-Pyridine Cobalt Dichromate
作者:Xuechun Zhang、Weili Cao、Xudong Wei、Hongwen Hu
DOI:10.1080/00397919708006070
日期:1997.4
Abstract In the presence of tetrakispyridine cobalt dichromate (CoPy4(HCrO4)2), pyridinium ylides and α,β-unsaturated aldehydes or ketones undergo 1,3-dipolar cycloaddition reactions followed by in situ aromatization to give 1-acyl substituted indolizines in moderate to good yields.
摘要 在四吡啶重铬酸钴 (CoPy4(HCrO4)2) 存在下,吡啶鎓叶立德和 α,β-不饱和醛或酮发生 1,3-偶极环加成反应,然后原位芳构化,得到 1-酰基取代的吲哚茚。良好的收益。