Synthesis and characterization of cyclopalladated complexes of secondary benzylamines

Treating palladium acetate with secondary benzylamines C6H5CH2NHMe (1), C6H5CH2NHBun (2), 4-OCH3C6H4CH2NHBun (3), 3,4-(OMe)2C6H3CH2NHBun (4) and 2,4-(OMe)2C6H3CH2NHBun (5) in benzene gave acetato-bridged cyclopalladated complexes 1a-5a. Metathesis reaction of these acetato-bridged cyclopalladated complexes (1a-5a) with LiCl in methanol gave chloro-bridged cyclopalladated complexes (1a-5b). The reactions of these chloro-bridged complexes were investigated with various ligands such as triphenylphosphine, acetylacetone, 1,1,2,2-tetraacetylethane, 1 -phenylazo-2-naphthol and 2-hydroxy-3-f-butyl-5-methylbenzylidene-p-chloroaniline. The resulting complexes were analyzed by means of IR, 1H NMR, 13C NMR and 1H-1H COSY NMR spectroscopic techniques. © 1997 Elsevier Science Ltd.