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p-Toluenesulfonic acid (PTSA, pTSA, or pTsOH) or tosylic acid (TsOH) is an organic compound with the formula CH 3 C 6 H 4 SO 3 H. It is a white extremely hygroscopic solid that is soluble in water, alcohols, and other polar organic solvents. [6] The CH 3 C 6 H 4 SO 2 group is known as the tosyl group and is often abbreviated as Ts or Tos.
This group is usually derived from the compound tosyl chloride, CH 3 C 6 H 4 SO 2 Cl (abbreviated TsCl), which forms esters and amides of toluenesulfonic acid, CH 3 C 6 H 4 SO 2 OH (abbreviated TsOH). The para orientation illustrated (p-toluenesulfonyl) is most common, and by convention tosyl without a prefix refers to the p-toluenesulfonyl group.
4-Toluenesulfonyl chloride (p-toluenesulfonyl chloride, toluene-p-sulfonyl chloride) is an organic compound with the formula CH 3 C 6 H 4 SO 2 Cl. This white, malodorous solid is a reagent widely used in organic synthesis. [2] Abbreviated TsCl or TosCl, it is a derivative of toluene and contains a sulfonyl chloride (−SO 2 Cl) functional group.
Pyridinium p-toluenesulfonate (PPTS) is a colourless solid salt of pyridine and p-toluenesulfonic acid. Uses. In organic synthesis, ...
p-Toluenesulfonyl hydrazide is the organic compound with the formula CH 3 C 6 H 4 SO 2 NHNH 2. It is a white solid that is soluble in many organic solvents but not water or alkanes. It is a white solid that is soluble in many organic solvents but not water or alkanes.
Sulfonic acids are strong acids. They are commonly cited as being around a million times stronger than the corresponding carboxylic acid. For example, p-Toluenesulfonic acid and methanesulfonic acid have pK a values of −2.8 and −1.9, respectively, while those of benzoic acid and acetic acid are 4.20 and 4.76, respectively
The U.S. Internal Revenue Service will lay off about 6,700 employees on Thursday, a person familiar with the matter said, a restructuring that could strain the tax-collecting agency's resources ...
2-Hydroxybenzoic acid, others 138.031694 C6H6O4: 1,2,3,5-Tetrahydroxybenzene 142.026608 C9H6O2: Coumarin 146.036779 C9H8O2: Cinnamic acid 148.05243 C9H10O2: 2-Methoxy-4-vinylphenol, others 150.06808 C10H14O: Carvacrol 150.104465 C8H8O3: 4-Hydroxyphenylacetic acid, others 152.047344 C9H12O2: 4-Ethylguaiacol 152.083729 C7H6O4: Protocatechuic acid ...