diarylcontaining

Diaryl-containing is a descriptive term used in chemistry to refer to molecules that incorporate two aryl groups, where an aryl is an aromatic hydrocarbon fragment such as phenyl, naphthyl, or their substituted derivatives. The two aryl groups may be attached to a central atom (as in diaryl methanes, diaryl ethers, or diaryl amines) or be linked directly through a carbon–carbon bond to form a biaryl framework.

Common diaryl-containing motifs include biaryl compounds (Ar–Ar), such as biphenyl, where two aromatic rings are joined by a single bond; diaryl methanes where two aryl groups are attached to a central methine carbon (Ar2CH); diaryl ethers (Ar–O–Ar); diaryl sulfides (Ar–S–Ar); and diaryl amines (Ar–N–Ar). Substituents on the rings can influence planarity, rotation about the aryl–aryl bond, and properties such as solubility and electronic communication between rings. In hindered biaryl systems, atropisomerism can give rise to isolable stereoisomers.

Synthesis of diaryyl-containing motifs typically relies on cross-coupling and related strategies, including Suzuki–Miyaura coupling, Buchwald–Hartwig amination, and copper- or nickel-catalyzed couplings, to form Ar–Ar, Ar–O–Ar, or Ar–N–Ar linkages. The choice of method depends on the desired linkage and the functional group tolerance required.

Applications for diaryl-containing compounds span pharmaceuticals, dyes, organic electronics, and materials science. Their conjugated aromatic frameworks contribute to stability, rigidity, and optical or electronic properties such as UV–visible absorption and charge transport. The term remains a broad, descriptive category rather than a strict chemical class, applied to any molecule bearing two aryl segments.