Optically Active 1,1′-Di-<i>tert</i>-butyl-2,2′-diphosphetanyl and Its Application in Rhodium-Catalyzed Asymmetric Hydrogenations
作者:Tsuneo Imamoto、Nobuhiko Oohara、Hidetoshi Takahashi
DOI:10.1055/s-2004-822396
日期:——
(1S,1′S,2R,2′R)-1,1′-Di-tert-butyl-2,2′-diphosphetanyl was prepared from tert-butylphosphine via phosphine-boranes as intermediates. The rhodium complex of the ligand was used as a highly efficient catalyst in asymmetric hydrogenations of α-acetylaminoacrylates and α-substituted enamides.
(1S,1′S,2R,2′R)-1,1′-二叔丁基-2,2′-二膦烷是通过叔丁基膦和膦-硼烷作为中间体合成的。该配体的铑络合物被用作在不对称氢化α-乙酰氨基丙烯酸酯和α-取代的烯酰胺反应中的高效催化剂。