A Modular Approach to Achiral and Chiral Nickel(II), Palladium(II), and Platinum(II) PCP Pincer Complexes Based on Diaminobenzenes
作者:David Benito-Garagorri、Vladica Bocokić、Kurt Mereiter、Karl Kirchner
DOI:10.1021/om060289e
日期:2006.7.1
chiral R2PCl compounds in the presence of base. PCP complexes of Ni(II), Ni(PCP)Cl, were synthesized by the reaction of NiCl2·6H2O with 1 equiv of a PCP ligand. In similar fashion, treatment of M(COD)X2 (M = Pd, Pt; X = Cl, Br) with 1 equiv of a PCP ligand yields the square-planar complexes M(PCP)X. Palladium PCP complexes featuring a coordinated TFA ligand (TFA = CF3COO-) are obtained by the reaction
含有一系列基于1,3-二氨基苯,5-三氟甲基-1,3-二氨基苯和3,5-二氨基-4-的新的非手性和手性PCP钳位配体的镍,钯和铂配合物的合成和表征报道了氯异丁基苯甲酸酯。通过在碱存在下用2当量的各种非手性和手性R 2 PC1化合物处理各自的二氨基苯,可以方便地高产率地制备新的PCP配体。通过NiCl 2 ·6H 2 O与1当量的PCP配体的反应合成了Ni(II),Ni(PCP)Cl的PCP配合物。以类似的方式处理M(COD)X 2(M = Pd,Pt; X = Cl,Br)具有1当量的PCP配体产生了正方形平面的复合物M(PCP)X。钯络合物PCP设有协调TFA配体(TFA = CF 3 COO - )由钯(TFA)的反应而得到的2与1个当量一个PCP配体。或者,也可以通过氧化加成路线生成钯PCP配合物。将基于3,5-二氨基-4-氯代异丁基苯甲酸酯的2当量PCP配体加到Pd 2(dba)3