950761-29-2Relevant academic research and scientific papers
Aryl-phenyl scrambling in intermediate organopalladium complexes: A gas-phase study of the mizoroki-heck reaction
Fiebig, Lukas,Schlorer, Nils,Schmalz, Hans-Guenther,Schaefer, Mathias
, p. 4906 - 4910 (2014/05/06)
The intramolecular aryl-phenyl scrambling reaction within palladium-DPPP-aryl complex (DPPP=1,3-bis(diphenylphosphino)propane) ions was analyzed by state-of-the-art tandem MS, including gas-phase ion/molecule reactions. The Mizoroki-Heck cross-coupling reaction was performed in the gas phase, and the intrinsic reactivity of important intermediates could be examined. Moreover, linear free-energy correlations were applied, and a mechanism for the scrambling reaction proceeding via phosphonium cations was assumed.
Synthesis of N-heterocyclic carbene palladium(II) bis-phosphine complexes and their decomposition in the presence of aryl halides
Magill, Alison M.,Yates, Brian F.,Cavell, Kingsley J.,Skelton, Brian W.,White, Allan H.
, p. 3398 - 3406 (2008/02/10)
Methylpalladium(ii) carbene complexes of the type [Pd(NHC)Me(P-P)]BF 4 (NHC = N-heterocyclic carbene, P-P = chelating phosphine) have been synthesised, the complex [Pd(tmiy)Me(dcype)]BF4 (tmiy = 1,3,4,5-tetramethylimidazol-2-ylidene, dcype = 1,2-bis(dicyclohexylphosphino) ethane) being characterised crystallographically. Complexes bearing the tmiy ligands were shown to decompose in an analogous manner to complexes bearing monodentate phosphine ligands, with the rate of decomposition being nominally linked to the size of the chelate ring. The decomposition of these complexes in the presence of aryl halides - expected to yield Pd(Ar)X(P-P) - was studied and shown instead to yield PdX2(P-P) and [Pd(tmiy)X(P-P)]BF4. Additionally, Pd(Me)X(P-P) and Pd(Ar)X(P-P) were observed in some cases. Intermolecular cross-over reactions between the starting complex and Pd(Ar)X(P-P) were found to be the source of these unexpected products. The Royal Society of Chemistry 2007.
