Pyridinium p-toluenesulfonate (CAS 24057-28-1)

Pyridinium p-toluenesulfonate is a white crystalline solid that is soluble in polar organic solvents like methanol, ethanol, and DMSO. This compound is used in creating a subdomain of the cytochrome P450 BM3 enzyme. A significant application of Pyridinium p-toluenesulfonate lies in its role as an ionic liquid, especially in organic synthesis and catalysis. Its capacity to establish hydrogen bonds with anions makes it an effective molecule for anion recognition. Furthermore, Pyridinium p-toluenesulfonate serves as a building block for crafting various compounds or materials. It has the capability to reduce chloride, yielding chloride ions in a process termed desulfurization. When introduced to cyclodepsipeptides, Pyridinium p-toluenesulfonate reacts and can even aid in their recrystallization. In organic synthesis, Pyridinium p-toluenesulfonate can function as an acid catalyst in polyene compounds formation or as a selective agent in the creation of dye cations. Pyridinium p-toluenesulfonate is a co-catalyst with L-proline it improves both yield and enantioselectivity of an asymmetric aldol condensation between dioxanones and aldehydes. Efficient catalyst for preparing tetrahydropyranyl ethers.