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

Two pyridine coordinated cyclopalladated complexes: (S)-chloro{2-[2-(4-iso-propyl)oxazolinyl]phenyl-C,N}(4-R-pyridine)palladium(II) (R = H, 1, R = NMe2, 2), have been synthesized and structurally characterized. Both complexes show that the palladium atom displays the expected square planar coordination with the pyridine and oxazoline nitrogen atoms positioned trans to one another. These two palladacycles can effectively catalyze the methanolysis of pesticide fenitrothion with an acceleration above 106–107 folds compared to that of the methoxide-catalyzed background reaction at pHss values of 10.80 and room temperature.

Graphical abstractTwo palladacycle compounds with chiral oxazoline backbone (1 and 2), which were synthesized and structurally characterized, showed high catalytic activity in the methanolysis of pesticide.Figure optionsDownload full-size imageDownload as PowerPoint slide