Enantioselective 1,6-Conjugate Addition of Dialkylzinc Reagents to Acyclic Dienones Catalyzed by Cu-DiPPAM Complex-Extension to Asymmetric Sequential 1,6/1,4-Conjugate Addition
作者:Magaly Magrez-Chiquet、Marie S. T. Morin、Joanna Wencel-Delord、Sammy Drissi Amraoui、Olivier Baslé、Alexandre Alexakis、Christophe Crévisy、Marc Mauduit
DOI:10.1002/chem.201302649
日期:2013.10.4
CC coupling: DiPPAM 1 and BINAP 2 ligands led to divergent behaviors in the asymmetric conjugate addition (ACA) of dialkylzinc reagents to linear aryldienones, which were applied to the development of a highly selective sequential asymmetric 1,6/1,4‐ACA process (see scheme; Tf = triflate, DBU = 1,8‐diazabicyclo[5.4.0]undec‐7‐ene).
Ç C偶联:DiPPAM 1和BINAP 2个配体导致的二烷基锌试剂以线性aryldienones,将其施加到一个高度选择性顺序不对称1,6- / 1,4-发展的不对称共轭加成(ACA)的发散行为ACA过程(请参阅方案; Tf =三氟甲磺酸盐,DBU = 1,8-二氮杂双环[5.4.0] undec-7-ene)。