A. Uehara, J. Bailar
Nov 16, 1982
Citations
0
Influential Citations
11
Citations
Journal
Journal of Organometallic Chemistry
Abstract
The cationic rhodium(I) complexes having the general formulas, [Rh(cod)-p-p)]Cl and [Rh(p-p)Cl]2, were prepared and investigated as homogeneous catalysts for the hydrogenation of 2-acetamidoacrylic acid: (cod is 1,5-cyclooctadiene and p-p is one of bisphosphines such as bis(1,2-diphenylphosphino)ethane (diphos), 2,2′-bis(diphenylphosphino)biphenyl (bpbp) and ()-2,3-o-isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)butane (()-diop)). It was found that these catalysts can be used repeatedly in the above hydrogenations and that the chloride ion plays an important role in the repetitive utilization because these complexes are probably maintained as [Rh(p-p)Cl]2 during and after the work-up procedures of the product.