Mark C. Pilon and, V. Grushin
Mar 31, 1998
Citations
0
Influential Citations
64
Citations
Journal
Organometallics
Abstract
The synthesis of organopalladium complexes containing a fluoro ligand, [(Ph3P)2Pd(F)R], is described. Two general synthetic strategies have been developed: (i) neutralization of hydroxo palladium dimers, [(Ph3P)2Pd2(R)2(μ-OH)2] (R = Me or Ph), with TREAT HF ([(HF)3·NEt3]) in the presence of PPh3 and (ii) the ultrasound-promoted exchange between [(Ph3P)2Pd(I)R] and AgF in benzene. It is essential for the synthesis with TREAT HF that no excess of the HF source is used; otherwise, the corresponding bifluorides, [(Ph3P)2Pd(FHF)R], are formed instead. Conducting the I/F exchange in the presence of 5−10% of the corresponding organic iodide, RI, is beneficial for purity of the desired fluoro complexes. All complexes 1−10 have been fully characterized by a variety of methods. The fluoro ligand in [(Ph3P)2Pd(F)R] is inert in anhydrous media of low polarity. However, in the presence of trace amounts of water, F ligand exchange is observed. No irreversible hydrolysis of the Pd−F bond takes place as [(Ph3P)2Pd(F)R] ...