Phosphinyl palladium complex

Pd bond in Me2Pd(dmpe) [dmpe=l,2-bis(dimethylphosphino)ethane] to generate phosphinate-palladium species with extrusion of a methane molecule (Scheme 40). Upon treatment the resulting palladium species with diphenylphosphine oxides, the remaining methyl-palladium bond was pro-tonated and a phosphinyl(phosphinato)palladium complex (20) was isolated. 

Dobashi N, Luse K, Hoshino T, Kanada J, Kashiwabara T, Kobata C, Nune SK, Tanaka M (2007) Palladium-complex-catalyzed regioselective Markovnikov addition reaction and dehydrogenative double phosphinylation to terminal alkynes with diphenylphosphine oxide. 

Another interesting catalytic transformation involving alkynes is the hydro phosphinylation, which affords alkenylphosphine oxides [62]. The formation of hydride-phosphinito compounds is one of the key steps of the reaction. These species are formed by oxidative addition of the P-H bond of diphenylphosphine oxide to platinum(O) and palladium(O) complexes, which act as catalytic precursors. In this context, it should be mentioned that a novel method to prepare hydride-phosphinito compounds has been recently reported. The new strategy starts from 133 and involves the oxidative addition of the P-H bond of... 

---