Category: 77876-39-2

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

Highly enantioselective spirocyclization of 1,6-enynes catalyzed by cationic skewphos rhodium(I) complex was written by Mikami, Koichi;Yusa, Yukinori;Hatano, Manabu;Wakabayashi, Kazuki;Aikawa, Kohsuke. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2004.Computed Properties of C29H30P2 This article mentions the following:

A cationic rhodium(I) complex having a skewphos ligand was a highly enantioselective catalyst for asym. carbocyclization of 1,6-enynes. 1,6-Enynes, e.g., I, underwent spirocyclization to give spiro-cycles, e.g., II, with good control of the newly formed quaternary stereogenic centers of the spiro-rings. In the experiment, the researchers used many compounds, for example, (2S,4S)-Pentane-2,4-diylbis(diphenylphosphine) (cas: 77876-39-2Computed Properties of C29H30P2).

(2S,4S)-Pentane-2,4-diylbis(diphenylphosphine) (cas: 77876-39-2) belongs to chiral phosphine ligands. Phosphine-catalyzed asymmetric reactions are now powerful and versatile tools for the construction of C–C, C–N, C–O, and C–S bonds and for the syntheses of functionalized carbocycles and heterocycles. Trivalent phosphorus compounds called phosphines have a tetrahedral electron-group geometry which makes them structurally analogous to amines.Computed Properties of C29H30P2

Referemce:
Phosphine ligand,
Chiral phosphines in nucleophilic organocatalysis

Asymmetric Synthesis of C₂-Symmetric Axially Chiral Biaryls through Rhodium-Catalyzed and Alkyne-Controlled Diastereoselective Double [2+2+2]Cycloaddition was written by Mori, Ayaka;Araki, Tatsuya;Miyauchi, Yuta;Noguchi, Keiichi;Tanaka, Ken. And the article was included in European Journal of Organic Chemistry in 2013.Computed Properties of C29H30P2 This article mentions the following:

The asym. synthesis of C₂-sym. axially chiral biaryls was achieved by the cationic rhodium(I)/1,3-bis(diphenylphosphino)propane (dppp) complex catalyzed diastereoselective double [2+2+2]cycloaddition of (R)-3-butyn-2-ol-derived tetraynes with functionalized monoynes. Interestingly, the use of propiolate derivatives afforded biaryls possessing large dihedral angles, and in contrast, the use of propargyl alc. afforded biaryls possessing small dihedral angles. The title compounds thus formed included an isobenzofuran dimer (I) and related substances. Under optimized reaction conditions, the synthesis of the target compounds was achieved using bis(norbornadiene)rhodium(I) tetrafluoroborate and 1,1′-(1,3-propanediyl)bis[1,1-diphenylphosphine] as catalyst combination. The synthesis of the target compounds was achieved by a reaction of chiral 1,6-bis(2-butyn-1-yloxy)-2,4-hexadiyne, 1,6-bis(2-propyn-1-yloxy)-2,4-hexadiyne, 1,1′-[(2,4-hexadiyne-1,6-diyl)bis(oxy-1-propyne-3,1-diyl)]bis[benzene] with alkyne derivatives In the experiment, the researchers used many compounds, for example, (2S,4S)-Pentane-2,4-diylbis(diphenylphosphine) (cas: 77876-39-2Computed Properties of C29H30P2).

(2S,4S)-Pentane-2,4-diylbis(diphenylphosphine) (cas: 77876-39-2) belongs to chiral phosphine ligands. Many phosphine-catalyzed reactions have been developed for the syntheses of various biologically important acyclic and cyclic molecules. Asymmetric variants of these reactions have evolved relatively slowly. Chiral phosphine catalysts: Nucleophilic phosphine catalysis often involves the formation of Lewis adducts, namely phosphonium (di)enolate zwitterions, as reaction intermediates.Computed Properties of C29H30P2

Referemce:
Phosphine ligand,
Chiral phosphines in nucleophilic organocatalysis