arylCHCHPh
ArylCHCHPh is a shorthand motif used in organic chemistry to denote a structural fragment in which two aryl groups are connected by a two-carbon core. The exact nature of the two-carbon linkage can vary with context: in many descriptions the fragment is intended as Ar-CH-CH-Ph, a diarylethane-type skeleton with a single carbon–carbon bond, while in other contexts the same notation may imply a vinyl linkage such as Ar-CH=CH-Ph (a stilbene skeleton). The term emphasizes the presence of an aryl group on each end of the two-carbon bridge and a CH or CH– unit in the middle.
Structure and stereochemistry: If the bridge is a single C–C bond (diarylethane), rotation about the bond can
Occurrence and significance: Motifs of this type are common in natural products, dyes, liquid crystals, and
Synthesis and reactivity: General approaches to building Ar–CH–CH–Ar frameworks include cross-coupling strategies that assemble the two