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。
NOVEL PICOLINAMIDE-CINCHONA ORGANOCATALYSTS AND DERIVATIVES
申请人:UNIVERSIDADE DE ÉVORA
公开号:US20160236184A1
公开(公告)日:2016-08-18
The present application describes a novel type of picolinamide-cinchona organocatalyst that allows for the successful transformation of ketimines to chiral amines with very high enantioselectivities and with the highest TOFs reported for any particular organocatalyst to date. These organocatalysts have also been immobilized to a variety of solid supports, including magneto-nanoparticles.
Highly chemoselective, sterically sensitive NHC-catalysed amine acylation with pyridil
作者:Amy C. Maguire、Vikas Kumar、Stephen J. Connon
DOI:10.1039/c9cc06937b
日期:——
A new strategy for the protection of amines has been developed involving reaction with pyridil under the influence of N-heterocyclic carbene catalysis. The methodology is capable of distinguishing between two amines characterised by small differences in steric bulk and the resulting pyridoyl amides can be cleaved without requiring either strongly acidic or basic hydrolysis.
Recoverable Resin-Supported Pyridylamide Ligand for Microwave-Accelerated Molybdenum-Catalyzed Asymmetric Allylic Alkylations: Enantioselective Synthesis of Baclofen
作者:Oscar Belda、Stina Lundgren、Christina Moberg
DOI:10.1021/ol034605m
日期:2003.6.1
microwave-accelerated molybdenum-catalyzedasymmetricallylicalkylation. The reaction afforded the product in high yield and with high regio- and enantioselectivity. The heterogeneous ligand could be reused several times with no change in the reaction outcome. The asymmetricallylicalkylation was employed as the key step in the enantioselective synthesis of (R)-baclofen. [reaction: see text]
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。