title: Facile synthesis of beta-organotellurobutenolides via electrophilic tellurolactonization of alpha-allenoic acids.
abstract: We report a convenient and highly efficient method for the synthesis of beta-organotellurobutenolides by the aryltellurenyl halides-induced electrophilic tellurolactonization of alpha-allenoic acids under mild conditions. The resulting beta-organotellurobutenolides can be utilized as precursors for versatile butenolide derivatives through a substitution reaction with organocuprate reagent or Pd/Cu(I)-catalyzed cross-coupling with terminal alkyne.
authors.affiliation: Department of Chemistry, Zhejiang University (Campus Xixi), Hangzhou 310028, P. R. China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Xu
authors.forename: Xian
authors.initials: X
authors.lastname: Huang
authors.forename: Jingqi
authors.initials: J
authors.lastname: Yuan