| Abstract
| - The PCP palladium hydroxide undergoes insertion of CO to give a stable mononuclear palladium hydroxy carbonyl complex, which was structurally characterized. It undergoes isomerization to the formate complex via decarboxylation and reinsertion into the Pd−H bond thus formed.
- {2,6-Bis[(di-tert-butylphosphino)methyl]phenyl}palladium hydroxide, PCPPdOH, undergoes a fastinsertion of CO2 to give the bicarbonate complex (PCP)PdO2COH. It also reacts with CO to give amononuclear hydroxy carbonyl complex, (PCP)PdCOOH. The Pd−C bond of this is unreactive towardolefins. The complex undergoes a slow conversion to the formate complex, (PCP)PdO2CH, via adecarboxylation to give the hydride, which undergoes a fast normal insertion of CO2 to give the formate.The hydride, (PCP)PdH, reacts with phenyl acetylene to give the acetylide complex, (PCP)PdCCPh, ina C−H exchange reaction. This is similarly obtained from the reaction of (PCP)PdMe or (PCP)PdPhwith phenyl acetylene.
|
