Abbreviations PPTS | Appearance Colourless solid | |
 | ||
Pyridinium p-toluenesulfonate (PPTS) is a salt of pyridine and p-toluenesulfonic acid. It is a colourless solid.
Uses
In organic synthesis, PPTS is used as a weakly acidic catalyst. For example, PPTS is used to deprotect silyl ethers or tetrahydropyranyl ethers when a substrate is unstable to stronger acid catalysts.
References
Pyridinium p-toluenesulfonate Wikipedia(Text) CC BY-SA