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)(2)C6H3CH2NHBun ( 4) and 2,4-(OMe)(2)C6H3CH2NHBun (5) in benzene gave acetato-bridged cy clopalladated complexes 1a-5a. Metathesis reaction of these acetato-br idged cyclopalladated complexes (1a-5a) with LiCl in methanol gave chl oro-bridged cyclopalladated complexes (1a-5b). The reactions of these chloro-bridged complexes were investigated with various ligands such a s triphenylphosphine, acetylacetone, 1,1,2,2-tetraacetylethane, 1-phen ylazo-2-naphthol and 2-hydroxy-3 -t-butyl-5-methylbenzylidene-p-chloro aniline. The resulting complexes were analyzed by means of IR, H-1 NMR , C-13 NMR and H-1-H-1 COSY NMR spectroscopic techniques. (C) 1997 Els evier Science Ltd.