Reactions of Re(III) with α-diketones: Oxidative addition

The reactions of [ReCl3(CH3CN)(PPh3)2] with benzil PhC(O)C(O)Ph, and with a natural 1,2-naphthoquinone derivative, β-lapachone (Lap), result in oxidative addition with the formation of Re(V) complexes with stilbenediolate, [ReCl3(PhC(O)C(O)Ph)(PPh3)] (1) and with a reduced semiquinonic form of lapachone, [ReIVCl3(Lap−)(PPh3)] (2). The structures of both compounds were established by X-ray crystallography.

The reactions of [ReCl3(CH3CN)(PPh3)2] with benzil PhC(O)C(O)Ph, and with a natural 1,2-naphthoquinone derivative, β-lapachone (Lap), result in oxidative addition with the formation of Re(V) complexes with stilbenediolate, [ReCl3(PhC(O)C(O)Ph)(PPh3)] and with a reduced semiquinonic form of lapachone, [ReIVCl3(Lap−)(PPh3)]. The structures of both compounds were established by X-ray crystallography.Figure optionsDownload as PowerPoint slide