55065-04-8Relevant academic research and scientific papers
Synthesis, crystal structures and catalytic activities of new palladium(II)–bis(oxazoline) complexes
Ibrahim, Mansur B.,Malik, Imran,Shakil Hussain,Fazal, Atif,Fettouhi, Mohammed,El Ali, Bassam
, p. 739 - 749 (2016)
Palladium–bis(oxazoline) complexes (Pd-BOX-A and Pd-BOX-B) were synthesized and characterized by 1H, 13C NMR, IR and elemental analysis. The molecular structures of the complexes were confirmed by single-crystal X-ray analysis. In both cases, the palladium center is coordinated by the nitrogen atoms of the two oxazoline rings and two chloride ligands in a distorted square planar geometry. Despite the fact that the bis(oxazoline) ligand is achiral, the asymmetrical substitution on the phenyl spacer and the rigid backbone of the complex Pd-BOX-A induce inherent chirality and the compound crystallizes as a racemic mixture. Both complexes were found to be highly effective catalysts for Suzuki–Miyaura, Mizoroki–Heck and Sonogashira cross-coupling reactions. They also show excellent catalytic activities toward carbonylative coupling reactions.
Rhodium-catalyzed interconversion between acid fluorides and thioesters controlled using heteroatom acceptors
Arisawa, Mieko,Yamada, Toru,Yamaguchi, Masahiko
supporting information; experimental part, p. 6090 - 6092 (2011/01/04)
A rhodium complex catalyzed the equilibrium acyl transfer reaction between acid fluorides and thioesters. In the presence of fluoride or thiolate acceptors, the reaction could be shifted to either product. RhH(PPh 3)4-dppe catalyzed the reaction of acid fluorides and diorgano disulfides in the presence of triphenylphosphine giving thioesters, which was accompanied by triphenylphosphine difluoride. The same complex catalyzed the reaction of aryl thioesters and hexafluorobenzene giving acid fluorides, which was accompanied by 1,4-di(arylthio)-2,3,5,6- tetrafluorobenzenes.
