Journal of Molecular Catalysis A-Chemical, Vol.247, No.1-2, 65-72, 2006
Phosphane-free C-C Heck couplings catalyzed by Pd(II) fluorinated aniline complexes of the type trans-[PdCl2(NH2ArF)(2)]
A series of palladium fluoro-aniline complexes of the trans-[PdCl2(NH2ArF)(2)] type were synthesized in good yields by direct reaction of trans-[PdCl2(C6H5CN)] with (ArNH2)-N-F; Ar-F =C6H3-2,3-F-2 (1), C6H3-2,5-F-2 (2), C6H3-3,4-F-2 (3), C(6)H(3)5-F-2 (4), C6H2-2,3,4-F-3 (5), C6H2-2,3,6-F-3 (6), C6H2-2,4,5-F-3 (7), C6H2-2,4,6-F-3 (8), C6F4-H (9), C6F5, (10). The crystal structures of complexes 3, 4 and 5 were determined. Heck coupling reactions were carried out using complexes 1-10 as catalysts in order to examine the effect of the fluorinated anilines in the reaction of bromobenzene and styrene. (c) 2005 Elsevier B.V. All rights reserved.
Keywords:aniline ligands;fluorinated amines;Heck reaction;C-C coupling reactions;fluorinated amine complexes;palladium complexes;crystal structures;catalysis