| 17918762 |
Ito H, Kato T, Sawamura M: Design and synthesis of isocyanide ligands for catalysis: application to Rh-catalyzed hydrosilylation of ketones. Chem Asian J. 2007 Nov 5;2(11):1436-46.
New isocyanide ligands with meta-terphenyl backbones were synthesized. 2,6-Bis [3,5-bis (trimethylsilyl) phenyl]-4-methylphenyl isocyanide exhibited the highest rate acceleration in rhodium-catalyzed hydrosilylation among other isocyanide and phosphine ligands tested in this study. 1H NMR spectroscopic studies on the coordination behavior of the new ligands to [Rh (cod) 2] BF4 indicated that 2,6-bis [3,5-bis (trimethylsilyl) phenyl]-4-methylphenyl isocyanide exclusively forms the biscoordinated rhodium-isocyanide complex, whereas less sterically demanding isocyanide ligands predominantly form tetracoordinated rhodium-isocyanide complexes. |
81(1,1,1,1) |
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