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, providing an organic …

2015年6月17日 · While p-toluenesulfonic acid is generally used as the catalyst for tetrahydropyranylation of alcohols, PPTS (the pyridine salt of p-toluenesulfonic acid) can be …

吡啶对甲苯磺酸盐分子式为 C12H13NO3S；分子量 251.31；熔点为117~119℃；溶于大多数有机溶剂，经常在MeOH和CH2Cl2 中使用。 吡啶对甲苯磺酸是一种重要的反应试剂，常在有机合 …

Aldrich-232238; Pyridinium p-toluenesulfonate 0.98; CAS No.: 24057-28-1; Synonyms: p-Toluenesulfonic acid pyridine salt; PPTS; Pyridine p-toluenesulfonate; Linear Formula: …

2019年11月22日 · Pyridinium p-Toluenesulfonate is a catalyst that plays a crucial role in several key steps of the synthesis. It acts as a Lewis acid catalyst, facilitating the Claisen …

The lipid analogues of pyridinium p-toluenesulfonate (PPTS) were examined for catalyzing the condensation of an equimolar mixture of carboxylic acids and alcohols under mild conditions …

2001年4月15日 · Preparative Methods: prepared in a 95% yield by the addition of p ‐Toluenesulfonic Acid to Pyridine at 22–24 °C. 1, 2 Purification: recrystallized from acetone. 1 , …