Reference of 637-64-9, Catalysts function by providing an alternate reaction mechanism that has a lower activation energy than would be found in the absence of the catalyst. In some cases, the catalyzed mechanism may include additional steps.In a article, 637-64-9, molcular formula is C7H12O3, introducing its new discovery.
TaCl5 and TaCl5-Silica gel have been effectively used as Lewis acid catalysts for acetylation of alcohols. Also TaCl5-Chiral ligands have been used for kinetic resolution of 2alcohols albeit in low ees.
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 637-64-9 is helpful to your research. Electric Literature of 637-64-9
Reference：
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem