In homogeneous catalysis, the catalyst is in the same phase as the reactant. The number of collisions between reactants and catalyst is at a maximum.In a patent, 2926-30-9, name is Sodium trifluoromethanesulfonate, introducing its new discovery. Application In Synthesis of Sodium trifluoromethanesulfonate
We report regioselective functionalization of pyridones and pyrones via electrophilic bromination (Br2) or radical trifluoromethylation (NaSO2CF3/tBuOOH) at the 3-position. Counter-intuitively, the 3-position EW groups decreased the carbonyl stretching energy by 6?23 cm?1; however, 3,5-dibromination increased the C[dbnd]O frequency by 10?22 cm?1 compared to the 3-Br pyridones. X-ray crystallography revealed pyridone tautomers with contracted C[dbnd]O bond metrics. pKa values and 1H NMR shifts for the series 3-H?Br?CF3 revealed the expected trend of increasing acidity (pKa = 8.85 ? 8.33?6.78, MeOH) and increasing chemical shifts (10.97 ? 11.42?11.71 DMSO-d6). We conclude that the paradoxical decrease in CO stretching frequencies by the 3-positoin EW groups is explained by an ?assistive? electron-withdrawing effect, whereby the 3-position EW group assists the electronegative oxygen atom in recruiting more electron density, and ? as a result ? attaining more oxyanion character (decreased the C[dbnd]O bond strength).
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 2926-30-9 is helpful to your research. Application In Synthesis of Sodium trifluoromethanesulfonate
Reference：
Metal catalyst and ligand design,
Ligand Template Strategies for Catalyst Encapsulation – NCBI