Enantioposition-Selective Copper-Catalyzed Azide–Alkyne Cycloaddition for Construction of Chiral Biaryl Derivatives
摘要:
A highly enantioposition-selective copper-catalyzed azidealkyne cycloaddition (CuAAC) of dialkynes bearing prochiral biaryls has been developed for the construction of 1,2,3-triazoles bearing axially chiral biaryl groups in up to 76% yield and up to 99% ee.
[EN] QUINOXALINE DERIVATIVES<br/>[FR] DÉRIVÉS DE QUINOXALINE
申请人:GRUENENTHAL GMBH
公开号:WO2021144439A1
公开(公告)日:2021-07-22
The present invention relates to compounds according to general formula (I), which act as modulators of the glucocorticoid receptor and can be used in the treatment and/or prophylaxis of disorders which are at least partially mediated by the glucocorticoid receptor.
the Cu-catalyzed domino coupling of o-dihaloarenes with 2-mercaptobenzimidazoles. The reaction is also applicable to a series of multi-functional substrates, affording the halo-containing products with excellent selectivity. The brominated products can further react with arylboronic acids under Pd catalysis to furnish the aryl-substituted benzimidazo[2,1-b]benzothiazole derivatives.
通过邻二卤代芳烃与2-巯基苯并咪唑的铜催化多米诺偶联反应,可以高效,方便地合成各种苯并[ d ]苯并[4,5]咪唑并[ 2,1- b ]噻唑。该反应还适用于一系列多功能底物,从而提供具有优异选择性的含卤产物。溴化产物可以在Pd催化下进一步与芳基硼酸反应,得到芳基取代的苯并咪唑并[2,1- b ]苯并噻唑衍生物。
Palladium-Catalyzed Desymmetric Intermolecular C–N Coupling Enabled by a Chiral Monophosphine Ligand Derived from Anthracene Photodimer
The development of chiral ligands with privileged scaffolds plays an important role in transition-metal-catalyzed asymmetric reactions. Herein we present anthracene-photodimer-derived chiral monophosphine ligand 1, which features dual chirality and a rigid scaffold. This ligand exhibits remarkable efficiency in Pd-catalyzed desymmetric intermolecular C–N coupling under mild conditions with excellent