Recently we focused our attention on the chemistry of hydroxy functionalised π-extended ring systems (1). These ligands have been obtained by one-step nucleophilic addition reaction of cyclopentadienyl or the benzo-condensed homologues indenyl and fluorenyl anions on substituted oxirane, as propylene (CH2CHMe)O and its enantiomerically pure form, styrene (CH2CHPh)O and cyclopentene oxides [CH(CH2)3CH]O. In the case of propylene oxide, reactions have been found to be quantitatively and regiospecifically driven to the less congested epoxide carbon atom. We succeeded in isolating unusual hapticity modes (eta1 or eta3) by reacting [Ind*]- or [Flu*]- with Re carbonyl halides1, whereas the eta5-coordination has been accomplished with FeCl2, yielding substituted metallocenes of the type [eta5-C9H6(CH2CHMe)OSiMe3]2Fe as further examples of planar chirality (2). Reaction between Na[C5H4(CH2CHPhOH)] and [Rh(COD)Cl]2, afforded the desired piano stool complex [eta5-C5H4(CH2CHPhOH)]Rh(COD). 1-S. Cerini, PhD Thesis, University of Bologna, 2004. 2- Paley R.S.; Chem.Rew.; 2002; 102; 1493, and references therein.
S. Bordoni, L.Busetto, S. Cerini. (2004). Donor Substituted Cyclopenta Benzo-fused Congeners as Versatile Ligands. ROMA : Università degli Studi di Roma "La Sapienza".
Donor Substituted Cyclopenta Benzo-fused Congeners as Versatile Ligands
BORDONI, SILVIA;BUSETTO, LUIGI;CERINI, STEFANO
2004
Abstract
Recently we focused our attention on the chemistry of hydroxy functionalised π-extended ring systems (1). These ligands have been obtained by one-step nucleophilic addition reaction of cyclopentadienyl or the benzo-condensed homologues indenyl and fluorenyl anions on substituted oxirane, as propylene (CH2CHMe)O and its enantiomerically pure form, styrene (CH2CHPh)O and cyclopentene oxides [CH(CH2)3CH]O. In the case of propylene oxide, reactions have been found to be quantitatively and regiospecifically driven to the less congested epoxide carbon atom. We succeeded in isolating unusual hapticity modes (eta1 or eta3) by reacting [Ind*]- or [Flu*]- with Re carbonyl halides1, whereas the eta5-coordination has been accomplished with FeCl2, yielding substituted metallocenes of the type [eta5-C9H6(CH2CHMe)OSiMe3]2Fe as further examples of planar chirality (2). Reaction between Na[C5H4(CH2CHPhOH)] and [Rh(COD)Cl]2, afforded the desired piano stool complex [eta5-C5H4(CH2CHPhOH)]Rh(COD). 1-S. Cerini, PhD Thesis, University of Bologna, 2004. 2- Paley R.S.; Chem.Rew.; 2002; 102; 1493, and references therein.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
