A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 7650-91-1, Name is Benzyldiphenylphosphine, molecular formula is C19H17P. In an article, author is Paradies, Jan,once mentioned of 7650-91-1, Quality Control of Benzyldiphenylphosphine.
Chiral Borane-Based Lewis Acids for Metal Free Hydrogenations
The unquenched reactivity of strong Lewis acids in the presence of Lewis bases in solution, the so-called frustrated Lewis pairs (FLP), has led to the discovery of the metal-free activations, whereas the FLP-mediated hydrogen activation is the most prominent. So far, the metal-free hydrogenation is the most studied application of FLP chemistry and highly efficient methodologies for a number of unsaturated substrates have been developed. This chapter starts with a brief introduction to frustrated Lewis pair chemistry. The second part focuses on the synthetic challenges of chiral borane-derived Lewis acids for asymmetric transformations. The last part gives a state-of-the-art summary of asymmetric transformations using chiral FLPs.
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Reference:
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