Manganese Dioxide.pptx

This slide is about the reagent named manganese dioxide which is an oxidative reagent for alcohols. Here you can learn briefly about the reagent and can improve your knowledge of organic chemistry. This slide is made by referring to many books and made easy for you to study. Hope you can understand it.

1. Manganese dioxide (MnO 2 )

2. Manganese dioxide: Mild reagent for Oxidation. Oxidant for Allylic and Benzylic Alcohol. Primary Alcohol yields aldehyde and Secondary Alcohol yields ketone. Mild condition in a neutral solvent such as water, petroleum, acetone, DMF, CH 2 Cl 2 , or CHCl 3 Activated MnO 2 Preparation: 3MnSO 4 + 2KMnO 4 + 2H 2 O → 5MnO 2 + K 2 SO 4 + 2H 2 SO 4 manganese dioxide

3. Reactions: Benzyl alcohol Benzaldehyde 1. 2.

4. Mechanism: (dissolves in the solvent)