Application
Tris(4-chlorophenyl)phosphine serves as a versatile catalyst and cocatalyst, presented as a white to light yellow crystalline powder. It is employed in the preparation of chromans and (E,E)-1,3-dienes through the reaction of γ-substituted allenoates with aldehydes and facilitates solvent-free Heck reactions. Additionally, it acts as a cocatalyst in several advanced chemical processes, including the regioselective carbomagnesiation of terminal alkynes and enynes using alkyl Grignard reagents, rhodium-catalyzed coordination-assisted regioselective alkenylation of aromatic C-H bonds with terminal silylacetylenes, rhodium-catalyzed hydrogenation reactions, and platinum-catalyzed allylation reactions.