Catalytic Enantioselective Synthesis of 2-Aryl Chromenes and Related Phosphoramidite Ligands and Catalyst Compounds
申请人:Northwestern University
公开号:US20150315168A1
公开(公告)日:2015-11-05
Methods to access 2-aryl chromene compounds via an asymmetric catalytic process.
通过不对称催化过程访问2-芳基色素化合物的方法。
Catalytic enantioselective synthesis of 2-aryl-chromenes
作者:Bi-Shun Zeng、Xinyi Yu、Paul W. Siu、Karl A. Scheidt
DOI:10.1039/c4sc00423j
日期:——
An enantioselective Pd-catalyzed 6-endo-trig reaction for the synthesis of 2-aryl-chromenes has been developed. A systematic optimization of a TADDOL-derived ligand set resulted in the identification of a novel monodentate phosphoramidite–palladium catalyst that accesses 2-aryl-2H-chromenes with high yield and enantioselectivity under mild conditions. The products obtained from this method can be transformed into biologically active compounds through functionalization of the chromene alkene.