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 Basicity of Very Weak Bases in 1,2-Dichloroethane, published in 2016, which mentions a compound: 3411-48-1, Name is Tri(naphthalen-1-yl)phosphine, Molecular C30H21P, Category: chiral-nitrogen-ligands.
The basicity scale of very weak bases has been set up in 1,2-dichloroethane to give, for the first time, reliable quant. insights into the basic properties of weak bases in a low-polarity solvent. The scale contains 30 compounds, including anilines; phosphanes, and carbonyl bases, such as esters and amides, linked by 53 relative basicity measurements. The scale spans more than 12 pKip units, expanding to as low pKip values as possible with our current exptl. methodol.
Different reactions of this compound(Tri(naphthalen-1-yl)phosphine)Category: chiral-nitrogen-ligands require different conditions, so the reaction conditions are very important.
Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis—I. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis