Catalytic asymmetric synthesis of Pt- and Pd-PCP pincer complexes bearing a para-N pyridinyl backbone
作者:Esther Hui Yen Wong、Yu-Xiang Jia、Yongxin Li、Sumod A. Pullarkat、Pak-Hing Leung
DOI:10.1016/j.jorganchem.2018.03.010
日期:2018.5
A diastereoselective catalytic asymmetric hydrophosphination reaction was performed using a palladacycle catalyst to produce chiral PCP phosphine ligand with high dr (95:5) and excellent enantioselectivity (>99% ee). Subsequent facile metalation of the chiral ligand with Pt and Pd metal salts yielded the desired pincer complexes. The protonated form of these pincer complexes was also synthesised, and
使用帕拉达环催化剂进行非对映选择性催化不对称氢磷酸化反应,以生产具有高dr(95:5)和优异对映选择性(> 99%ee)的手性PCP膦配体。随后用Pt和Pd金属盐将手性配体容易金属化,得到所需的钳夹配合物。还合成了这些钳形复合物的质子化形式,并通过使用X射线晶体衍射和NMR光谱分析确认了它们的结构。