Coordination Chemistry of Ester-Functionalized Cp Ligands. A Versatile Approach to the Chiral Hydroxyalkoxycarbonylcyclopentadienide [C₅H₄CO₂(CHMe)₂OH]^-. Synthesis, Structure, and Catalytic Activity of Rhodium(I) and Iron(II) Complexes

Abstract

The ring-opening reaction of meso-4,5-dimethyl-1,3-dioxolan-2-one or (4S,5S)-dimethyl-1,3-dioxolan-2-one with NaCp yields the sodium hydroxyalkoxycarbonylcyclopentadienides Na[rac-C 5 H 4 CO 2 (CHMe) 2 OH] (1) and Na[(1S,2S)-C 5 H 4 CO 2 (CHMe) 2 OH] (2). Complexes of rhodium and iron have been prepared, and the X-ray molecular structures of [Rh{(1R,2S)-CpCO 2 (CHMe) 2 OH}(NBD)] ( 7) and [Rh{(1S,2S)-CpCO 2 (CHMe) 2 OH}(NBD)] ( 8) are reported. The rhodium complexes are catalytically active in the hydroformylation of hex-1-ene. Heptanal is the prevailing product with a regioselectivity up to 70%, while the residual olefin is mainly isomerized.

Catalysis and Organometallic Chemistry of Monometallic Species

“…Unusual ruthenium-catalysed oxidative Heck reactions have also have also been studied. 187 New classes of catalyst include a ruthenium() bis(N-heterocyclic carbene)pyridine for the hydrogenation of carbonyl compounds, 188 chiral ester functionalised Cp complexes of iron(), 189 and new ferrocenyl ligands exhibiting excellent enantioselectivities for asymmetric hydrogenation of amino acid synthesis. 190 A linkage isomer of decaphenyl ferrocene has been isolated and structurally characterised and contains η 5 -C 5 Ph 5 cyclopentadienyl and η 5/6 -C 5 Ph 5 arene coordination.…”

Synthesis of Optically Active Tetrahedral Clusters through Ester Exchange Catalyzed by Lipase

“…Elemental analyses were performed on an 1106-type analyzer. Mo(CO) 6 , W(CO) 6 , RuCo 2 (CO) 9 ( μ 3 -S), FeCo 2 (CO) 9 ( μ 3 -S), Na[C 5 H 4 C(O)Me], and Na[C 5 H 4 C(O)O Me] were prepared according to literature methods or slight modifications thereof.…”

Recent progress and applications for metallodendrimers

“…[80][81][82][83] reported the preparation and catalytic properties of different rhodium complexes of the type [Rh{C 5…”