Facile Synthesis of β<i>-</i>Organotellurobutenolides via Electrophilic Tellurolactonization of <i>α</i>-Allenoic Acids
作者:Qing Xu、Xian Huang、Jingqi Yuan
DOI:10.1021/jo050564r
日期:2005.8.1
We report a convenient and highly efficient method for the synthesis of β-organotellurobutenolides by the aryltellurenyl halides-induced electrophilic tellurolactonization of α-allenoic acids under mild conditions. The resulting β-organotellurobutenolides can be utilized as precursors for versatile butenolide derivatives through a substitution reaction with organocuprate reagent or Pd/Cu(I)-catalyzed