New, Chiral Phase Transfer Catalysts for Effecting Asymmetric Conjugate Additions of α-Alkyl-α-cyanoacetates to Acetylenic Esters
作者:Xisheng Wang、Masanori Kitamura、Keiji Maruoka
DOI:10.1021/ja068119g
日期:2007.2.1
A new, chiral phasetransfercatalyst has been designed for the development of a general and useful procedure on the hitherto unknown, asymmetric conjugate additions of α-substituted-α-cyanoacetates to acetylenic esters with high enantioselectivity and moderate E/Z selectivity.
Asymmetric conjugate additions of α-substituted-α-cyanoacetates to acetylenic ketones by chiral phase transfer catalysis
作者:Quan Lan、Xisheng Wang、Keiji Maruoka
DOI:10.1016/j.tetlet.2007.05.037
日期:2007.7
Asymmetric conjugate addition of α-substituted-α-cyanoacetates to acetylenic ketones has been achieved with high enantioselectivity and moderate E/Z selectivity under the influence of our recently designed, binaphthyl-modified 3,5-bis[3,5-bis(trifluoromethyl)phenyl]phenyl substituted phasetransfer catalyst.