Abstract
Arylphosphine ligands play an extremely important role in homogeneous catalysis, and it’s also the crucial factor in determining the success of a reaction. In this thesis, we used an inexpensive cobalt-catalyzed to synthesize a species of unsymmetrical triarylphosphines and triarylphosphine oxides from diphenylphosphine or diphenylphosphine oxide with aryl halides. This is the first successful Co-catalyzed couplings of carbon-phosphorus (C – P) bond forming. In addition, we tried to study more details in the mechanism of the presenting coupling reaction. Interestingly, the reaction could also work without the reducing agent when the additive in the reaction condition was changed from Zn to ZnI2. Since the reaction failed to formation of carbon-phosphorus bond when replacing aryl halides by the organozinc reagent, the associative mechanism mediated by the organozinc reagent had been excluded. At the last part of this thesis, we attempted to synthesis of the phosphinooxazoline derivatves by this methodology. Finally, we got the corresponding complexes of two phosphinooxzaolines with cobalt iodides.