Related Products of 17261-28-8, An article , which mentions 17261-28-8, molecular formula is C19H15O2P. The compound – 2-(Diphenylphosphino)benzoic acid played an important role in people’s production and life.
2H-Labelled and 18O-labelled cyclopentenyl esters (±)-4 and (±)-5 are used as probes for memory effects in Pd-catalysed allylic alkylation. 2H-Labelled alkylation product 6 arising from stereospecific Pd-catalysed reaction of (±)-4 was analysed by a novel 13C NMR method involving 2H- isotope shifts and paramagnetic diastereotopic shifts. When catalysts bearing the Trost modular ligand (R,R)-3 were employed, variable memory effects were observed with the slower reacting chirality mismatched (R)-4 substrate- catalyst pairing. The memory effect is dependent on nucleofuge steric bulk and not pK(a). Attack by [L1CH(CO2CH3)2] occurs with reversed site selectivity but (R)-4 remains the mismatched substrate. Mismatched ionisation leading to a Pd-piallyl in which (R,R)-3 acts as a monophosphine ligand may explain the memory effect.
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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