Synthesis, Characterization, and Reactivity of Hydroxycyclopentadienyl Cobalt Complexes was written by Wu, Weiwei;Solis-Ibarra, Diego;Walker, Katherine L.;Waymouth, Robert M.. And the article was included in Organometallics in 2018.Product Details of 77876-39-2 This article mentions the following:
The reaction of tetraphenylcyclopentadienone with Co2(CO)8 generates the mixed-valence tricobalt complex [[Ph4C4CO]Co(CO)2]2[μ-Co(MeCN)2]. In contrast to the conventional Pauson-Khand reaction to generate cyclopentadienone ligated Co complexes, this method benefits from both mild reaction conditions and high yields. Treatment of this tricobalt complex with proton sources such as H2O or alcs. yields the monomeric hydroxy-tetraphenylcyclopentadienyl Co complex [Ph4CpOH]Co(CO)2. Phosphite substituted monomeric Co complexes [Ph4CpOH]Co(CO)[P(OR)3] were also synthesized, and protonation of these complexes transiently formed Co hydride species. In the experiment, the researchers used many compounds, for example, (2S,4S)-Pentane-2,4-diylbis(diphenylphosphine) (cas: 77876-39-2Product Details of 77876-39-2).
(2S,4S)-Pentane-2,4-diylbis(diphenylphosphine) (cas: 77876-39-2) belongs to chiral phosphine ligands. Generally, the efficiency of nucleophilic phosphine catalysis often depends on the nature of the tertiary phosphine. Chiral phosphine catalysts: Nucleophilic phosphine catalysis often involves the formation of Lewis adducts, namely phosphonium (di)enolate zwitterions, as reaction intermediates.Product Details of 77876-39-2
Referemce:
Phosphine ligand,
Chiral phosphines in nucleophilic organocatalysis