What are the reaction mechanisms of the oxidation - reduction reactions of the compound with CAS 106 - 65 - 0?

CAS 106 - 65 - 0 corresponds to Dimethyl carbonate (DMC), a colorless, flammable liquid with a faint, sweet odor. As a reliable supplier of Dimethyl carbonate, I am well - versed in its chemical properties and reactions, especially the oxidation - reduction reactions. In this blog, we will delve into the reaction mechanisms of the oxidation - reduction reactions of Dimethyl carbonate.

General Overview of Oxidation - Reduction Reactions

Oxidation - reduction reactions, also known as redox reactions, involve the transfer of electrons between chemical species. Oxidation is the loss of electrons, while reduction is the gain of electrons. These reactions are fundamental in many chemical processes, including the synthesis of various compounds and energy production.

Oxidation Reactions of Dimethyl Carbonate

Reaction with Strong Oxidizing Agents

Dimethyl carbonate can react with strong oxidizing agents such as potassium permanganate ($KMnO_4$) in an acidic medium. The reaction mechanism can be explained in the following steps:

Activation of the Oxidizing Agent: In an acidic medium, potassium permanganate is converted into manganese ions with a lower oxidation state. The acidic environment provides protons ($H^+$) that participate in the reaction.
- The overall reaction of $KMnO_4$ in an acidic medium can be represented as: $MnO_4^-+8H^++5e^-\rightarrow Mn^{2 + }+4H_2O$.
Attack on Dimethyl Carbonate: The activated oxidizing agent attacks the carbon - oxygen bonds in Dimethyl carbonate. The carbonyl carbon in Dimethyl carbonate is relatively electron - deficient due to the electronegativity of the oxygen atoms. The oxidizing agent abstracts electrons from the carbon - oxygen bonds, leading to the cleavage of the bonds.
- One possible intermediate in this reaction is a carbonate radical. The carbonate radical can further react with the oxidizing agent or other species in the reaction mixture.
- The overall oxidation reaction of Dimethyl carbonate with $KMnO_4$ in an acidic medium can be complex, and the final products may include carbon dioxide, water, and small organic fragments.
Formation of Final Products: Through a series of electron - transfer steps and bond - breaking processes, carbon dioxide is formed as a major oxidation product. The hydrogen atoms in Dimethyl carbonate are oxidized to water.

Reaction with Oxygen

Under certain conditions, Dimethyl carbonate can also react with oxygen in an oxidation reaction. This reaction is often catalyzed by transition - metal catalysts such as copper or palladium.

Catalyst Activation: The transition - metal catalyst is first activated by the oxygen molecule. The oxygen molecule adsorbs on the surface of the catalyst, and a chemical bond is formed between the oxygen and the metal atoms.
- For example, in the case of a copper catalyst, the oxygen molecule can form a complex with copper atoms on the catalyst surface.
Adsorption of Dimethyl Carbonate: Dimethyl carbonate then adsorbs on the activated catalyst surface. The carbon - oxygen bonds in Dimethyl carbonate interact with the catalyst - oxygen complex.
- The interaction between Dimethyl carbonate and the catalyst - oxygen complex weakens the carbon - oxygen bonds in Dimethyl carbonate, making them more susceptible to oxidation.
Oxidation Process: The oxygen atoms from the catalyst - oxygen complex transfer to the carbon atoms in Dimethyl carbonate, leading to the oxidation of Dimethyl carbonate. The reaction may proceed through a series of steps, including the formation of intermediate species such as peroxycarbonates.
- The final products of the oxidation of Dimethyl carbonate with oxygen may include carbon dioxide and methanol. The methanol can be further oxidized to formaldehyde or other oxidation products depending on the reaction conditions.

Reduction Reactions of Dimethyl Carbonate

Reaction with Metal Hydrides

Dimethyl carbonate can undergo reduction reactions with metal hydrides such as lithium aluminum hydride ($LiAlH_4$). The reaction mechanism is as follows:

Activation of the Reducing Agent: Lithium aluminum hydride is a strong reducing agent. In the reaction medium, it dissociates to release hydride ions ($H^-$).
- $LiAlH_4\rightarrow Li^++AlH_4^-$ and $AlH_4^-\rightarrow Al^{3+}+4H^-$.
Attack on Dimethyl Carbonate: The hydride ions attack the carbonyl carbon in Dimethyl carbonate. The hydride ion donates a pair of electrons to the carbonyl carbon, forming a new carbon - hydrogen bond.
- This attack leads to the formation of an alkoxide intermediate. The alkoxide intermediate can react with other species in the reaction mixture.
Formation of Reduction Products: The alkoxide intermediate is then protonated by a proton source in the reaction medium, usually water or an alcohol. The final reduction products of Dimethyl carbonate with $LiAlH_4$ are methanol and methane in some cases.
- The overall reaction can be represented as: $(CH_3O)_2CO + 4H^-\rightarrow 2CH_3OH+CH_4$.

Electrochemical Reduction

Dimethyl carbonate can also be reduced electrochemically at the cathode of an electrochemical cell.

Electron Transfer at the Cathode: At the cathode, electrons are supplied to Dimethyl carbonate molecules. The electrons are transferred to the carbonyl carbon in Dimethyl carbonate, reducing the carbon - oxygen double bond.
- The reduction process at the cathode can be affected by the electrode material, the electrolyte composition, and the applied potential.
Formation of Intermediate Species: The reduction of the carbon - oxygen double bond in Dimethyl carbonate leads to the formation of an alkoxide intermediate. The alkoxide intermediate can further react with the electrolyte or other species in the electrochemical cell.
- Depending on the reaction conditions, the intermediate may be protonated to form methanol or other reduction products.

Applications and Significance of Oxidation - Reduction Reactions of Dimethyl Carbonate

The oxidation - reduction reactions of Dimethyl carbonate have several applications:

Synthesis of Organic Compounds: The oxidation and reduction reactions can be used to synthesize various organic compounds. For example, the oxidation products of Dimethyl carbonate can be used as starting materials for the synthesis of carboxylic acids and other carbonyl compounds. The reduction products such as methanol can be used in the production of formaldehyde and other chemicals.
Environmental Remediation: The oxidation reactions of Dimethyl carbonate can be used in environmental remediation processes. For example, the reaction with strong oxidizing agents can be used to degrade Dimethyl carbonate in contaminated soil or water.
Energy Storage and Conversion: The electrochemical reduction of Dimethyl carbonate can be explored for energy storage and conversion applications. For example, it can be used in fuel cells or batteries.

Conclusion

As a supplier of Dimethyl carbonate (CAS 106 - 65 - 0), I understand the importance of the oxidation - reduction reactions of this compound. The reaction mechanisms of oxidation and reduction reactions of Dimethyl carbonate are complex and involve multiple steps. These reactions have significant applications in various fields, including organic synthesis, environmental remediation, and energy storage. If you are interested in purchasing Dimethyl carbonate or have any questions about its reactions, please feel free to contact us for further discussions and procurement negotiations.

Sodium P-toluenesulfonate CAS 657-84-1 Sodium P-toluenesulfonate manufacturer

References

March, J. Advanced Organic Chemistry: Reactions, Mechanisms, and Structure. John Wiley & Sons, 2007.
Atkins, P., & de Paula, J. Physical Chemistry. Oxford University Press, 2014.
Housecroft, C. E., & Sharpe, A. G. Inorganic Chemistry. Pearson, 2012.