## Explanation: Reaction of Thiols with KMnO₄ ### **Step 1: Identify the Reactant** The reactant is **2-propanethiol** (isopropyl mercaptan), with the structure: ``` CH3 | CH3—CH—SH ``` ### **Step 2: What Does KMnO₄ Do?** **Potassium permanganate (KMnO₄)** is a strong oxidizing agent. When it reacts with **thiols (R-SH)**, it oxidizes them to **sulfonic acids (R-SO₃H)**. ### **Step 3: Show the Reaction** The general oxidation is: ``` R-CH2-SH + KMnO₄ → R-CH2-SO₃H ``` So for your compound: ``` CH3 | CH3—CH—SH + KMnO₄ → CH3—CH—SO₃H ``` The product is **2-propanesulfonic acid**. ### **Step 4: Draw the Principal Product** Here is a structural representation: ``` CH3 | CH3—CH—SO₃H ``` - The **SH group** is converted to a **SO₃H group** (sulfonic acid functional group). --- ### **Summary Table** | Reactant | Reagent | Principal Product | |-------------------|-------------|--------------------------| | 2-propanethiol | KMnO₄ | 2-propanesulfonic acid | --- Let me know if you want a step-by-step mechanism or more details!