Air-stable P-chiral bidentate phosphine ligand with (1-adamantyl)methylphosphino group
Air-stable P-chiral bidentate phosphine ligand with (1-adamantyl)methylphosphino group
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DOI:
10.1246/cl.2007.500
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发表时间:
2007-04-05
影响因子:
1.6
通讯作者:
Yoshida, Kazuhiro
中科院分区:
文献类型:
--
作者:
Imamoto, Tsuneo;Kumada, Atsushi;Yoshida, Kazuhiro
Air-stable diphosphine ligand, (R,R)-2,3-bis((1-adamamyl)methylphosphino)quinoxaline, was prepared by the reaction of enantiomerically pure (S)-(1-adamantyl)methylphosphine-borane with 2,3-dichloroquinoxaline. The ligand exhibited excellent enantioselectivities in Rh-catalyzed asymmetric hydrogenation and Pd-catalyzed asymmetric ring-opening reaction.