Related Products of 17261-28-8. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 17261-28-8, Name is 2-(Diphenylphosphino)benzoic acid. In a document type is Article, introducing its new discovery.
Synthesis characterization and hydroformylation activity of new mononuclear rhodium(I) compounds incorporated with polar-group functionalized phosphines
A first effort employing a range of polar-group functionalized phosphines (L1-L7) to design mononuclear Rh(I) compounds of [Rh(quin-8-O)(CO)(L)] (quin-8-O = 8-hydroxy quinolate) is described. The reaction of a Rh(I) precursor [Rh(mu-Cl)(CO)2]2 with 8-hydroxyquinoline in the presence of a base followed by phosphines (L1-L7) produced only a single isomer of [Rh(quin-8-O)(CO)(L)] compounds (1-7) with pendant, i.e. non-bonded, polar-groups (includes carboxyl, hydroxyl and formyl). A relationship between Deltagd31P chemical shifts and the nu(C?O) was derived to evaluate and explain the sigma-donor properties of these phosphines with respect to the electronic properties of the polar groups and the extent of pi-back-bonding to the CO group. These mononuclear Rh(I)-Phosphines were investigated as catalysts in the hydroformylation of 1-hexene and cyclohexene in aqueous two-phase and single-phase solvent systems. The Rh(I) catalysts with strong sigma-donor and hydrophilic phosphines provided better yields and selectivities for the hydroformylation products, which is a reverse trend compared to literature reports. When the Rh(I) compounds contained strong sigma-donor phosphines, the pi-acceptor properties of the pyridine ring of 8-hydroxyquinolate were found to be beneficial for the facile cleavage of the CO group during hydroformylation, and additionally, to improve the kinetic stability of catalysts. Versita Warsaw and Springer-Verlag Berlin Heidelberg.
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Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate