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
我们报告β的合成方便,高效的方法-通过的aryltellurenyl卤化物引起的电tellurolactonization organotellurobutenolides α温和的条件下-allenoic酸。将所得的β - organotellurobutenolides可以用作通过与有机铜试剂或Pd / Cu的取代反应的前体多功能丁烯酸内酯衍生物(Ⅰ)催化与末端炔交叉耦合。