Molybdenum-Catalyzed Asymmetric Allylic Alkylation of 3-Alkyloxindoles: Reaction Development and Applications
作者:Barry M. Trost、Yong Zhang
DOI:10.1002/chem.201002569
日期:2011.3.1
the development of Mo‐catalyzed asymmetricallylicalkylationreactions with 3‐alkyloxindoles as nucleophiles. The reaction is complementary to the Pd‐catalyzed reaction with regard to the scope of oxindole nucleophiles. A number of 3‐alkyloxindoles were alkylated successfully under mild conditions to give products with excellent yields and good‐to‐excellent enantioselectivities. Applications of this
我们报告了我们在开发以 3-烷基羟吲哚作为亲核试剂的 Mo 催化的不对称烯丙基烷基化反应方面所做的工作。就羟吲哚亲核试剂的范围而言,该反应与 Pd 催化反应互补。许多3-烷基羟吲哚在温和条件下成功烷基化,得到具有优异收率和良好对映选择性的产品。据报道,该方法应用于制备二氢吲哚生物碱,如 (-)-毒扁豆碱、ent- (-)-去溴氟曲明 B 和 communesin B 的吲哚啉喹啉环。
Molybdenum-Catalyzed Asymmetric Allylation of 3-Alkyloxindoles: Application to the Formal Total Synthesis of (−)-Physostigmine
作者:Barry M. Trost、Yong Zhang
DOI:10.1021/ja060560j
日期:2006.4.1
The first example of Mo-catalyzed asymmetric allylation for the generation of quaternary stereocenters at a prochiral nucleophile is reported. A variety of 3-alkyl oxindoles can be alkylated with high yields and enantioselectivity. This method provides expedited access to (-)-physostigmine and its analogues.
报道了第一个在前手性亲核试剂上产生四元立体中心的 Mo 催化不对称烯丙基化的例子。多种 3-烷基羟吲哚可以以高产率和对映选择性进行烷基化。该方法提供了对 (-)-毒扁豆碱及其类似物的快速访问。
Asymmetric alkylation of oxindoles: an approach to the total synthesis of (-)-physostigmine