<i>S</i>-Chiral Sulfinamides as Highly Enantioselective Organocatalysts
作者:Dong Pei、Zhouyu Wang、Siyu Wei、Yu Zhang、Jian Sun
DOI:10.1021/ol062633+
日期:2006.12.1
accessible chiral sulfinamide 2 has been developed as the first highly efficient and enantioselectiveorganocatalyst relying solely on a chiral sulfur center for stereochemical induction. In the presence of 20 mol % of 2, a broad range of N-aryl ketimines 1 were reduced by trichlorosilane to produce amines 3 in high yield and enantioselectivity. [reaction: see text]
Reactivity of n-aryl-α, α-dichlorinated arylketimines
作者:Norbert De Kimpe、Roland Verhé、Laurent De Buyck、Sunari Tukiman、Niceas Schamp
DOI:10.1016/0040-4020(79)80096-4
日期:1979.1
α-dichloroalkylarylketimines are formed from N-aryl-alkylarylketimines with N-chloro succinimide in carbon tetrachloride. Reaction of N-1-(2,2-dichlor-1-arylpropylidene)anilines with sodiummethoxide the latter compounds formally involves migration of the notrogen atom from the 1- to the 3-position. The reaction of higher substituted N-aryl-α,α-dichloroalkylarylketimines with sodiummethoxide leads mainly to α-chloro-α
Kim, So Yeon; An, Gwang-Il; Rhee, Hakjune, Synlett, 2003, # 1, p. 112 - 114
作者:Kim, So Yeon、An, Gwang-Il、Rhee, Hakjune
DOI:——
日期:——
Enantioselective hydrosilylation of ketimines catalyzed by Lewis basic C2-symmetric chiral tetraamide
作者:Zhouyu Wang、Siyu Wei、Chao Wang、Jian Sun
DOI:10.1016/j.tetasy.2007.03.008
日期:2007.4
L-Proline derived C-2-symmetric chiral tetraamide 5b was found to behave as an effective Lewis basic catalyst in the enantioselective hydrosilylation of ketimines, affording high isolated yields (up to 95%) and moderate to high enantioselectivities (up to 86% ee) for a broad range of ketimines. A clear synergistic effect of the two identical diamide units of 5b was observed for asymmetric induction. (c) 2007 Elsevier Ltd. All rights reserved.
CHO, BYUNG TAE;CHUN, YU SUNG, J. CHEM. SOC. PERKIN TRANS. PT 1,(1990) N1, C. 3200-3201