In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Preparation of 2,7-diaminofluorenone derivatives by palladium-catalyzed amination, published in 1998-09-30, which mentions a compound: 172418-32-5, Name is trans-Di-μ-acetatobis[2-[bis(2-methylphenyl)phosphino]benzyl]dipalladium, Molecular C46H46O4P2Pd2, Application In Synthesis of trans-Di-μ-acetatobis[2-[bis(2-methylphenyl)phosphino]benzyl]dipalladium.
A convenient synthesis of 2,7-diaminofluorenones via Pd-catalyzed reaction of secondary amines with 2,7-dibromofluorene and subsequent oxidation is described. In case of non-cyclic secondary amines applied, 2-monoaminofluorenones are formed as side-products by dehydrohalogenation.
After consulting a lot of data, we found that this compound(172418-32-5)Application In Synthesis of trans-Di-μ-acetatobis[2-[bis(2-methylphenyl)phosphino]benzyl]dipalladium can be used in many types of reactions. And in most cases, this compound has more advantages.
Reference:
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate