已开发出铑/二烯络合物催化的芳基硼酸与吲哚衍生的α,β-不饱和酯的不对称1,4-加成反应,以得到高度对映体富集的3-(1 H-吲哚-2-基)-3-芳基丙酸酯。通过利用吲哚在C3和N1位的亲核特性,构建一系列有价值的手性三环吲哚骨架,例如2,3-二氢-1 H-吡咯并[1,2- a ]吲哚和环戊[ b ]吲哚可以有效地实现。
Application of a Rhodium-Catalyzed Addition/Cyclization Sequence toward the Synthesis of Polycyclic Heteroaromatics
作者:Nai-Wen Tseng、Mark Lautens
DOI:10.1021/jo802622d
日期:2009.2.20
A cascade rhodium-catalyzed addition/cyclization reaction of bifunctional heteroromatic boronate esters to strained bicyclic alkenes has been developed. This method provides an efficient route to generate a variety of polycyclic heteroaromatic molecules containing benzothiophene, benzofuran, and indole moieties.