Julien Dubarle-Offner, M. Axet, L. Chamoreau
Jun 6, 2012
Citations
0
Influential Citations
7
Citations
Journal
Organometallics
Abstract
Reaction of (S)-1-(2-chlorophenyl)ethanol with [Cp*Ru(CH3CN)3][OTf] provides the single diastereomer (Sp)-[Cp*Ru(η6-(S)-1-(2-chlorophenyl)ethanol)][OTf] ((Sp,S)-1), in which the metal center is preferentially placed on one side of the arene ring. The other enantiomer (R)-1-(2-chlorophenyl)ethanol provides the planar chiral ruthenium compound (Rp,R)-1. The structures of both enantiomers were ascertained by single-crystal X-ray diffraction. These compounds can be used as precursors to prepare the enantiopure metalated phosphino ligands (Sp)-[Cp*Ru(η6-(S)-1-(2-diphenylphosphinophenyl)ethanol)][OTf] ((Sp,S)-2) and (Rp)-[Cp*Ru(η6-(R)-1-(2-diphenylphosphinophenyl)ethanol)][OTf] ((Rp,R)-2), in which the −PPh2 unit is attached to a chiral metalated π-arene platform. The chiral planar phosphine ligands react with [AuCl(tht)] to give heterobinuclear gold complexes with planar chirality, [AuCl((Sp,S)-2)] ((Sp,S)-3) and [AuCl((Rp,R)-2)] ((Rp,R)-3), as confirmed by their CD traces. Our method provides an entry to the ...