para-Toluenesulfonic acid (PTSA, pTSA, or pTsOH) or tosylic acid (TsOH) is an organic compound with the formula CH3C6H4SO3H. It is a white extremely hygroscopic
containing the anion of p-toluenesulfonic acid, TsO−M+ (e.g., sodium p-toluenesulfonate), or it may refer to esters of p-toluenesulfonic acid, TsOR (R = organyl
Pyridinium p-toluenesulfonate (PPTS) is a colourless solid salt of pyridine and p-toluenesulfonic acid. In organic synthesis, PPTS is used as a weakly acidic catalyst
Collidinium p-toluenesulfonate or CPTS is a salt between p-toluenesulfonic acid and collidine (2,4,6-trimethylpyridine). It is used as a mild glycosylation
Sulfanilic acid (4-aminobenzenesulfonic acid) is an organic compound with the formula H3NC6H4SO3. It is an off-white solid. It is a zwitterion, which
Sulfonic acids are strong acids. They are around a million times stronger than the corresponding carboxylic acid. For example, p-Toluenesulfonic acid and methanesulfonic
reacting two molecules of n-propanol in the presence of p-toluenesulfonic acid (a strong acid) and heat, in the same way other symmetrical ethers may
can be catalyzed by Brønsted acids, such as HCl, H2SO4, polyphosphoric acid, and p-toluenesulfonic acid, or Lewis acids, such as boron trifluoride, zinc
acids, lowering their effective pKa values, by stabilizing the conjugate base. Homoconjugation enhances the proton-donating power of toluenesulfonic acid
K_{a}=-6.4} ) Sulfonic acids, such as p-toluenesulfonic acid (tosylic acid) are a class of strong organic oxyacids. Some sulfonic acids can be isolated as