Bulky<i>P*</i>-Chirogenic Diazaphospholidines as Monodentate Ligands for Asymmetric Catalysis
作者:Konstantin N. Gavrilov、Eduard B. Benetskiy、Tatiana B. Grishina、Eugenie A. Rastorguev、Marina G. Maksimova、Sergey V. Zheglov、Vadim A. Davankov、Benjamin Schäffner、Armin Börner、Stephane Rosset、Gaelle Bailat、Alexandre Alexakis
DOI:10.1002/ejoc.200900058
日期:2009.8
been designed and developed. Ligands of this type exhibited high enantioselectivities in Pd-catalysed allylic substitution reactions of (E)-1,3-diphenylallyl acetate with NaSO2pTol (up to 87 % ee), CH2(CO2Me)2 (up to 92 % ee), (C3H7)2NH (up to 93 % ee) and (CH2)4NH (up to 99 % ee). These novel stereoselectors have also been successfully employed in Rh-catalysed asymmetric hydrogenations of dimethyl itaconate