Pd-H elimination reactions in palladium(II) allylic complexes.
The ease of H elimination from the 4- (beta-) position in a series of allylic complexes [Pd(5-C(6)F(5)-1-3-eta(3)-cyclohexenyl)XL](n+) (X, L = Br, N-, P-donor, C(6)Cl(2)F(3); n = -1, 0, +1) was compared by analyzing their decomposition products at 50 degrees C. Pd-H elimination does not occur for cationic complexes, whereas it is the main decomposition pathway for neutral and anionic complexes. In addition to the charge of the complex, the ease of this Pd-H elimination is determined by the trans influence of the ligands (aryl > PMe(3) > Br, N-donor).
Albéniz
Ana C
AC
IU CINQUIMA/Química Inorgánica, Facultad de Ciencias, Universidad de Valladolid, Prado de la Magdalena s/n, 47005, Valladolid, Spain. albeniz@qi.uva.es
Espinet
Pablo
P
Martín-Ruiz
Blanca
B