Reference of 49676-42-8, Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 49676-42-8, Name is Tris(2,4-dimethylphenyl)phosphine, molecular formula is C24H27P. In a Article，once mentioned of 49676-42-8
Preparation of new sulfonated triarylphosphanes: Control of the selectivity by structural assistance
A synthetic approach for the selective preparation of tri-, di-, and monosulfonated triarylphosphanes is presented. PPhnAr3-n parent phosphanes (1a-8a) having aryl rings (Ar) activated by simple electron donating groups (CH3, CH3O) were prepared by the standard Grignard method. The activated rings could be sulfonated selectively under mild conditions and with short reaction times (0.8-3 h). Using a very simple workup procedure, the corresponding tri-, di-, and monosulfonated phosphanes (1b-8b) were isolated in outstanding yields (88-99%) and found to contain negligible amount of phosphane oxides (0-4%). Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.
The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 49676-42-8 is helpful to your research., Reference of 49676-42-8
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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