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 Secondary Interactions or Ligand Scrambling? Subtle Steric Effects Govern the Iridium(I) Coordination Chemistry of Phosphoramidite Ligands, published in 2010, which mentions a compound: 415918-91-1, Name is (11bR)-N,N-Bis[(1R)-1-phenylethyl]dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-amine, Molecular C36H30NO2P, Name: (11bR)-N,N-Bis[(1R)-1-phenylethyl]dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-amine.
The like and unlike isomers of phosphoramidite (P*) ligands are found to react differently with iridium(I), which is a key to explaining the apparently inconsistent results obtained by us and other research groups in a variety of catalytic reactions. Thus, the unlike diastereoisomer (aR,S,S)-[IrCl(cod)(1a)] (2a; cod = 1,5-cyclooctadiene, 1a = (aR,S,S)-(1,1′-binaphthalene)-2,2′-diyl bis(1-phenylethyl)phosphoramidite) forms, upon chloride abstraction, the monosubstituted complex (aR,S,S)-[Ir(cod)(1,2-η-1a,κP)]+ (3a), which contains a chelating P* ligand that features an η2 interaction between a dangling Ph group and iridium. Under analogous conditions, the like analog (aR,R,R)-1a’ gives the disubstituted species (aR,R,R)-[Ir(cod)(1a’,κP)2]+ (4a’) with monodentate P* ligands. The structure of 3a was assessed by a combination of x-ray and NMR spectroscopic studies, which indicate that it is the configuration of the binaphthol moiety (and not that of the dangling benzyl N groups) that determines the configuration of the complex. The effect of the relative configuration of the P* ligand on its iridium(I) coordination chem. is discussed in the context of our preliminary catalytic results and of apparently random results obtained by other groups in the iridium(I)-catalyzed asym. allylic alkylation of allylic acetates and in rhodium(I)-catalyzed asym. cycloaddition reactions. Further studies with the unlike ligand (aS,R,R)-(1,1′-binaphthalene)-2,2′-diyl bis{[1-(1-naphthalene-1-yl)ethyl]phosphoramidite} (1b) showed a yet different coordination mode, i.e., the η4-arene-metal interaction in (aS,R,R)-[Ir(cod)(1,2,3,4-η-1b,κP)]+ (3b).
As far as I know, this compound(415918-91-1)Name: (11bR)-N,N-Bis[(1R)-1-phenylethyl]dinaphtho[2,1-d:1′,2′-f][1,3,2]dioxaphosphepin-4-amine can be applied in many ways, which is helpful for the development of experiments. Therefore many people are doing relevant researches.
Reference:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics