One-Point Binding Ligands for Asymmetric Gold Catalysis: Phosphoramidites with a TADDOL-Related but Acyclic Backbone
作者:Henrik Teller、Matthieu Corbet、Luca Mantilli、Gopinadhanpillai Gopakumar、Richard Goddard、Walter Thiel、Alois Fürstner
DOI:10.1021/ja303641p
日期:2012.9.19
Readily available phosphoramidites incorporating TADDOL-related diols with an acyclic backbone turned out to be excellent ligands for asymmetric gold catalysis, allowing a number of mechanistically different transformations to be performed with good to outstanding enantioselectivities. This includes [2 + 2] and [4 + 2] cycloadditions of ene-allenes, cycloisomerizations of enynes, hydroarylation reactions
将 TADDOL 相关二醇与无环骨架结合的现成亚磷酰胺被证明是不对称金催化的极好配体,允许以良好到出色的对映选择性进行许多机械不同的转化。这包括烯-丙二烯的 [2 + 2] 和 [4 + 2] 环加成、烯炔的环异构化、形成二氢吲哚的加氢芳基化反应,以及丙二烯的分子内加氢胺化和加氢烷氧基化。有效合成抗抑郁药物候选 (-)-GSK 1360707 的应用强调了它们的制备相关性。新配体的独特设计元素是它们的无环二甲醚骨架代替了传统的(异亚丙基)缩醛部分特征塔多尔的。