Pd-Catalyzed Desymmetric Intramolecular O-Arylation Reaction: Enantioselective Synthesis of (3,4-Dihydro-2H-chromen-3-yl)methanols
摘要:
An enantioselective intramolecular O-arylation was achieved through desymmetrization with Pd-catalyzed coupling reactions. The intramolecular asymmetric aryl C-O coupling reactions of 2-(2-haloaryl)propane-1,3-diols led to the enantioselective formation of chiral (3,4-dihydro-2H-chromen-3-yl)methanols in good yields and high enantiomeric selectivity.
Enantioselective Synthesis of Chiral Oxygen-Containing Heterocycles Using Copper-Catalyzed Aryl C–O Coupling Reactions via Asymmetric Desymmetrization
作者:Yong Zhang、Qiuyan Wang、Ting Wang、Huan He、Wenqiang Yang、Xinhao Zhang、Qian Cai
DOI:10.1021/acs.joc.6b02646
日期:2017.2.3
An enantioselective desymmetric aryl C–O coupling reaction was demonstrated under the catalysis of CuI and a chiral cyclic diamine ligand. A series of chiral oxygen-containing heterocyclic units such as 2,3-dihydrobenzofurans, chromans, and 1,4-benzodioxanes with tertiary or quaternary stereocarbon centers were synthesized with this method. DFT calculations were also carried out for a better understanding