There are disclosed an improved process for preparing a composition consisting essentially of at least one transition metal complex of a 1,3-bis(2-pyridylimino)isoindoline comprising contacting in a molten phase a 1,2-dicyanobenzene with at least one 2-aminopyridine in the presence of a transition metal complex and an improved process for preparing the 1,3-bis(2-pyridylimino)isoindoline ligand from the same starting materials comprising contacting in a molten phase said starting materials, optionally in the presence of an alkaline earth metal carbonate.
本发明公开了一种制备主要由至少一种 1,3-双(2-
吡啶亚
氨基)
异吲哚啉的过渡
金属络合物组成的组合物的改进工艺,该工艺包括在过渡
金属络合物存在下,将
1,2-二氰基苯与至少一种 2-
氨基吡啶在熔融相中接触;以及一种从相同起始材料制备 1,3-双(2-
吡啶亚
氨基)
异吲哚啉配体的改进工艺,该工艺包括在碱土
金属
碳酸盐存在下,将上述起始材料在熔融相中接触。