Synthesis,Characterization, and Application of Platinum(II) Complexes Incorporating Racemic and Optically Active 4‐Chloro‐5‐Methyl‐1‐Phenyl‐1,2,3,6‐Tetrahydrophosphinine Ligand |
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Authors: | Pé ter Bagi,Konstantin Karaghiosoff,Má tyá s Czugler,Dó ra Hessz,Mihá ly Ká llay,Mikló s Kubinyi,Tibor Szilvá si,Pé ter Pongrá cz,Lá szló Kollá r,Istvá n Timá ri,Katalin E. Kö vé r,Lá szló Drahos,Elemé r Fogassy,Gyö rgy Keglevich |
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Abstract: | An efficient resolution method was elaborated for the preparation of (+)‐4‐chloro‐5‐methyl‐1‐phenyl‐1,2,3,6‐tetrahydrophosphinine oxide using the acidic Ca2+ salt of (–)‐O,O‐di‐p‐toluoyl‐(2R,3R)‐tartaric acid. Crystal structure of the diastereomeric complex was evaluated by single crystal X‐ray analysis. Beside this, the absolute P‐configuration was also determined by a circular dichroism (CD) spectroscopic study including theoretical calculations. The tetrahydrophosphinine oxide was then converted to the corresponding platinum complex whose stereostructure was investigated by high‐level quantum chemical calculations. The Pt complex was tested as a catalyst in the hydroformylation of styrene. |
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