Enantioselective synthesis of benzazepinoindoles bearing trifluoromethylated quaternary stereocenters catalyzed by chiral spirocyclic phosphoric acids
作者:Xuejian Li、Di Chen、Haorui Gu、Xufeng Lin
DOI:10.1039/c4cc02295e
日期:——
SPA-catalyzed iso-Pictet–Spengler reaction of C-2-linked o-aminobenzylindoles and trifluoromethyl ketones for construction of optically enriched benzazepinoindole derivatives has been realised.
Highly Stable Zr(IV)-Based Metal–Organic Frameworks with Chiral Phosphoric Acids for Catalytic Asymmetric Tandem Reactions
作者:Wei Gong、Xu Chen、Hong Jiang、Dandan Chu、Yong Cui、Yan Liu
DOI:10.1021/jacs.9b02294
日期:2019.5.8
Heterogeneous Brønsted acid catalysts featuring high porosity, crystallinity, and stability have been of great interest for both fundamental studies and practical applications, but synthetically, they still face a formidable challenge. Here, we illustrated a ligand design strategy for directly installing chiral phosphoric acid catalysts into highly stable Zr-MOFs by sterically protecting them from coordinating