A novel chiral amine-phosphine tagged with an amido-napthyridine moiety has been synthesised and found to bind complementary pyridinone additives. These additives were found to have a modest but measurable promotional effect on the catalytic activity and/or enantioselectivity of Ir- and Rh-catalysed reductions. One explanation for the relatively poor results obtained with the Ir and Ru catalysts is the formation of complexes, in which the ligand adopts an anionic tridentate coordination mode. Pt and Rh complexes of this type were isolated and characterised.
合成了一种新型的含
氨基-膦基和酰胺-
萘啶基团的手性胺,并发现其能够与互补的
吡啶酮添加剂结合。这些添加剂对
铱(Ir)和
铑(Rh)催化的还原反应的催化活性和/或不对称选择性具有适度但可测量的促进作用。对于
铱和
钌催化剂获得的较差结果的一个解释是形成了络合物,其中
配体采用阴离子三齿配位模式。这类
铂(Pt)和
铑(Rh)络合物已被分离并进行了表征。