J. Blum, Z. Aizenshtat, Shulah Iflah
Apr 1, 1976
Citations
0
Influential Citations
3
Citations
Journal
Transition Metal Chemistry
Abstract
SummaryThe chlorobenzaldehydes, 2-bromo-4-tolualdehyde and 2-iodobenzaldehyde react with IrCl(CO)(PPh3)2 at 190 to 220° to give PhIrCl2(CO)(PPh3)2,p-tolyl IrBr2(CO)(PPh3)2 and PhIrCl2(CO)(PPh3), respectively. Iodo-and bromobenzene form PhIrCl(Hal)(CO)(PPh3)2 complexes, whereas chlorobenzene does not react under these conditions. Halogen transfer from the aromatic to the metal atom in the reaction of halobenzaldehydes, and halogen extrusion in various homogeneously catalyzed processes, are assumed to follow similar reaction patterns.