论文部分内容阅读
1 Results Diphosphinoazines are very versatile,potentially up to tetradentate ligands,known to form complexes with many transition metals.Recently,we developed synthesis of diphosphinoazines with various substituents on phosphorus donor atoms.This fine tuning allowed to design novel catalytic systems for several organic reactions.Hydroamination of Michael-type substrates with selected primary and secondary amines revealed the reactivity of some amines in non-catalyzed reaction.Hydroamination of methyl methacrylate by morpholine was catalyzed by palladium cationic complexes of type 1[1]. Cationic nickel complexes of type 2 are,in combinations with usual activators like MAO,catalysts for ethylene polymerization[2]. Palladium complexes with diphosphinoazine backbone in a deprotonated pincer-like form (type 3) are efficient catalysts for the Mizoroki-Heck reaction of bromoarenes and activated chloroarenes[3].See Fig.1.
1 Results Diphosphinoazines are very versatile, potentially up to tetradentate ligands, known to form complexes with many transition metals. Recently, we developed synthesis of diphosphinoazines with various substituents on phosphorus donor atoms. This fine tuning allowed to design novel catalytic systems for several organic reactions . Hydroamination of Michael-type substrates with selected primary and secondary amines revealed the reactivity of some amines in non-catalyzed reaction. Hydroamination of methyl methacrylate by morpholine was catalyzed by palladium cationic complexes of type 1 [1]. Cationic nickel complexes of type 2 are, in combination with usual activators like MAO, catalysts for ethylene polymerization [2]. Palladium complexes with diphosphinoazine backbone in a deprotonated pincer-like form (type 3) are efficient catalysts for the Mizoroki-Heck reaction of bromoarenes and activated chloroarenes [3 ] .See Fig.1.