Cationic Palladium-Catalyzed [5+2] Annulation: Synthesis of 1-Benzoxepines from 2-Aroylmethoxyarylboronic Acids
作者:Guixia Liu、Xiyan Lu
DOI:10.1002/adsc.200700369
日期:2007.10.8
The synthesis of 1-benzoxepinesfrom2-aroylmethoxyarylboronicacids and alkynes in the presence of a catalytic amount of [Pd(dppp)(H2O)2]2+(TfO−)2 was developed. This [5+2] annulation involves the intramolecular nucleophilic addition of a vinylpalladium species to ketones.
Cu(<scp>i</scp>)-Catalyzed asymmetric intramolecular addition of aryl pinacolboronic esters to unactivated ketones: enantioselective synthesis of 2,3-dihydrobenzofuran-3-ol derivatives
作者:Chunjie Ni、Jihui Gao、Xianjie Fang
DOI:10.1039/c9cc09653a
日期:——
An (S,S)-QuinoxP*-supported Cu(i) catalyst has been disclosed for highly enantioselective intramolecular addition of aryl pinacolboronic esters to unactivated ketones under mild reaction conditions. This protocol showcases a broad substrate tolerance and allows access to various chiral 2,3-dihydrobenzofuran-3-ol derivatives in generally good yields with excellent enantioselectivities.
Cationic Palladium Complex Catalyzed Highly Enantioselective Intramolecular Addition of Arylboronic Acids to Ketones. A Convenient Synthesis of Optically Active Cycloalkanols
作者:Guixia Liu、Xiyan Lu
DOI:10.1021/ja0672425
日期:2006.12.1
An efficient and convenient synthesis of opticallyactive cycloalkanols by utilizing the chiral cationic palladium complex as the catalyst was achieved in mild conditions with high yield and high enantioselectivity.