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Comments on Tetracarbonyl(pyrrolylimine) Complexes of Rhenium
* 1 , * 2 , 3 , 4 , 3
1  Laboratoire de Chimie de Coordination du CNRS, UPR 8241, 31077 Toulouse cedex 4, France
2  BioCIS, Université Paris-Sud, CNRS, Université Paris-Saclay, 92290, Châtenay-Malabry, France
3  IPCM,UMR 8232, Université Paris 06, CNRS, F-75005, Paris, France
4  Institut Lavoisier de Versailles, Université de Versailles-Saint-Quentin-en-Yvelines, 78035 Versailles, France


The synthesis of tetracarbonyl (pyrrolylimine) complexes of rhenium bearing chirality on the pyrrolyl ligands was reported. The reactivity of these compounds towards the substitution of one carbonyl ligand with triphenyl phosphine, tricyclohexyl phosphine and trimethyl phosphite was studied. The rhenium becoming a stereogenic center in that transformation, the resulting tricarbonyl species were obtained as mixtures of diastereomers, with diastereomeric excesses varying from 8 to 84%, according to the reaction conditions and the relative steric hindrances of the pyrrolylimine and the organophosphorus ligands.

Keywords: Tetracarbonyl(pyrrolylimine) Complexes, Rhenium, Synthesis