Synonyms:diphosphane;Diphosphine;P2H4;13445-50-6;Diphosphorus trihydride;12208-07-0;biphosphine;CHEBI:35880;DTXSID40924074;Q2442174
99% *data from raw suppliers
The study focuses on the synthesis of mono- and diphosphine ligands based on the 4,4′-bisquinolone framework, known as BIQUIP ligands, which are designed for use in asymmetric catalysis. These ligands were generated through microwave-assisted palladium-catalyzed carbon-phosphorus cross-coupling reactions using heteroaryl bromides and diphenylphosphine as substrates. The aim was to create ligands with tunable electronic properties and potential hemilabile coordinating abilities, which could enhance the efficiency and selectivity of catalytic processes. Key chemicals used in the study include 3-bromo- and 3,3′-dibromobisquinolones as starting materials, N-bromosuccinimide (NBS) for bromination, diphenylphosphine (Ph2PH) for the cross-coupling reaction, and Herrmann’s palladacycle as a catalyst. The synthesized ligands are expected to offer unique impacts on the electronic properties of the phosphine ligators due to the presence of the cyclic enamide system in the quinolone moiety, and they serve to expand the range of available ligands for asymmetric catalysis.
The study focuses on the synthesis and characterization of copper(I) chalcogenide clusters stabilized by the redox-active diphosphine ligand 1,1′-bis(diphenylphosphino)ferrocene (dppf). The researchers used copper(I) acetate coordination complex (dppf)CuOAc (5) and reacted it with 0.5 equivalents of E(SiMe3)2 (where E = S, Se, Te) to prepare the clusters [Cu12(μ4-S)6(μ-dppf)4] (1), [Cu8(μ4-Se)4(μ-dppf)3] (2), [Cu4(μ4-Te)(μ4-η2-Te2)(μ-dppf)2] (3), and [Cu12(μ5-Te)4(μ8-η2-Te2)2(μ-dppf)4] (4). These chalcogenide clusters serve to explore the utility of the bidentate phosphine-based ferrocene ligand for the surface passivation of copper chalcogen frameworks, with the dppf ligands playing a crucial role in stabilizing the {Cu2xEx} cores and protecting the clusters from decomposition or further condensation into bulk solids. The study aimed to understand the redox properties and coordination abilities of these clusters, which could have implications for the development of functional materials.
The research explores innovative synthetic methods for creating diphosphine dioxides and hypophosphoric acid esters, compounds containing the >P(O)–(O)P< skeleton. These compounds are of significant interest due to their potential applications in biological processes and cancer treatment. The study investigates the use of the anion >P–O? as a synthetic precursor in a one-pot reaction to produce these compounds. The researchers also utilized electrophiles such as >P(O)X (X = Cl, Br) and explored the reaction mechanisms involving these compounds, identifying the formation of various products including diphosphine monoxides, pyrophosphites, and mixed anhydrides. The study highlights the role of iodine as a reactant, yielding high yields of diphosphine dioxides and hypophosphoric acid esters, suggesting a radical mechanism rather than pure nucleophilic substitution. The research provides valuable insights into the synthesis and reactivity of these phosphorus compounds, contributing to the field of organic chemistry.
What can I do for you?
Get Best Price
Total 8 Pictures about this product
