Direct ortho-palladation of 2-phenyl-2-oxazoline

Cyclopalladated complexes of 2-(m-nitrophenyl)imidazolines: synthesis, characterization and catalytic activity in the Suzuki reaction under mild conditions

“…However, the N-aryl ring is not coplanar with the three rings and the dihedral angle between N-aryl ring with the attached imidazoline ring is 66.4°( 79.0°). All the bond distances and angles around the Pd(II) center are similar to those observed in the related cyclopalladated complexes with 2-oxazolines, of which the N-Pd-C bond angle (around 80°) is essentially identical [30,31]. The coordinated PPh 3 is trans to the imino-nitrogen of imidazoline with an almost linear P-Pd-N angle.…”

Palladacycle complexes of (S)-4-iso-propyl-2-phenyl-2-oxazoline: Synthesis, crystal structures and catalytical methanolysis of pesticide

“…The dihedral angles between the planes {C(1)Pd (1) respectively fall within the range of the values reported for other cyclopalladated derivatives of oxazoline ligands [9,13]. The Pd(1)-N(2) (pyridine) bond length of 2.025(2) Å is consistent with those reported in orthocyclopalladated compounds with N,N-dimethylbenzylamine or oxime ligands with two nitrogen atoms in trans position [8,11].…”

Reactions of m-chloroperoxybenzoic acid with dimeric cyclopalladated complexes derived from 2-phenyl-2-oxazolines

“…In some cases, yields were calculated using 1 H NMR spectra; such yields are given in parentheses * No product was detected in the 1 H NMR spectrum of the reaction mixture Transition Met Chem provided two multiplets with an integration of 3H and 1H and centered at 7.45 and 8.42 ppm, respectively. Such a pattern is typical for the C 6 H 4 fragment of C,N-CPCs derived from 2-phenyl-2-oxazoline ligands [57,61,62]. Therefore, we suggest that only one aromatic group of the two oxazoline ligands in complex 5a is connected to an oxygen atom.…”

“…Solvents were purified by standard procedures prior to use [67]. The cyclopalladated complexes 1a,b and 7a,b were synthesized by known procedures [57,61,62].…”