Diethyl Malonate丨CAS 105-53-3

Applications

1. Key Intermediate in Organic Synthesis

Diethyl malonate丨CAS 105-53-3 is a widely used building block in organic chemistry for the synthesis of a variety of compounds including pharmaceuticals, agrochemicals, dyes, and flavorings.

It serves as the precursor in the malonic ester synthesis, a classic and versatile method to prepare substituted acetic acids and their derivatives.

It is often used to introduce a 1,3-dicarbonyl structure into molecules, which is key in many synthetic routes.

2. Pharmaceutical Industry

Used extensively in the synthesis of barbiturates, such as phenobarbital.

Precursor for the synthesis of several active pharmaceutical ingredients (APIs), including certain anti-inflammatory and cardiovascular drugs.

3. Agricultural Chemicals

Used to synthesize herbicides, pesticides, and fungicides through various condensation and alkylation reactions.

4. Flavor and Fragrance Industry

Acts as an intermediate in the preparation of artificial flavoring agents and fragrance compounds.

5. Dye and Pigment Manufacturing

Used in the synthesis of heterocyclic compounds and dyes due to its reactive methylene group and ability to form stabilized enolates.

6. Polymer Industry

Diethyl malonate derivatives are sometimes utilized as monomers or comonomers in specialty polymer synthesis.

Benefits

1. Versatility

Its active methylene group (between two ester groups) is highly acidic, making it readily reactive for alkylation, acylation, and condensation reactions.

This allows for the easy introduction of various substituents, making it highly versatile for synthetic chemists.

2. Cost-Effective and Readily Available

Diethyl malonate is relatively inexpensive and commercially available in large quantities, making it economically favorable for industrial synthesis.

3. Enables Efficient Carbon-Carbon Bond Formation

The malonic ester synthesis facilitated by diethyl malonate is an efficient method for constructing carbon skeletons, important in drug design and complex molecule synthesis.

4. Stable and Easy to Handle

Diethyl malonate is a stable liquid under normal conditions, making it convenient for laboratory and industrial use.

Summary

Diethyl malonate丨CAS 105-53-3 is a vital chemical intermediate extensively used in organic synthesis for preparing pharmaceuticals, agrochemicals, dyes, and flavors. Its highly reactive methylene group between two ester functions enables versatile transformations, especially carbon–carbon bond-forming reactions, making it indispensable in both industrial and research chemistry. It offers benefits of versatility, stability, cost-effectiveness, and ease of handling.