What Is Methyl 2-Cyano-2-Methylpropanoate?

Methyl 2-cyano-2-methylpropanoate is an organic compound with molecular formula C₆H₉NO₂ and molecular weight approximately 127.14 g/mol. Its structure features a quaternary carbon bearing a methyl group, a nitrile (–CN) group, and a methyl ester (–COOCH₃) group, along with an additional methyl substituent. This unique substitution pattern renders the central carbon sterically hindered and electronically activated, influencing its reactivity in radical and nucleophilic processes.

The compound is also known by related systematic names referencing the 2-cyano-2-methylpropanoate scaffold. It is a colorless to pale yellow liquid at room temperature under standard conditions. Researchers value it because the quaternary carbon framework stabilizes adjacent radical intermediates, a property exploited extensively in controlled radical polymerization methodologies.

What Are the Key Properties and Storage Requirements?

Methyl 2-cyano-2-methylpropanoate possesses both a nitrile and an ester functional group, each contributing distinct physicochemical characteristics. The nitrile group is a strong electron-withdrawing moiety that lowers the pK_a of adjacent C–H bonds and stabilizes radical intermediates at the quaternary carbon. The ester group provides an additional handle for further synthetic transformations such as hydrolysis, transesterification, or reduction.

For storage, this reagent should be kept in a tightly sealed container away from heat, ignition sources, and incompatible materials such as strong oxidizers, strong bases, and reducing agents. Storage under cool, dry, well-ventilated conditions—typically at 2–8 °C or room temperature as specified on the product Certificate of Analysis—is recommended to prevent degradation. Because the nitrile group can hydrolyze slowly under prolonged exposure to moisture or acidic/basic conditions, desiccated storage is advisable.

Standard laboratory personal protective equipment (PPE) including gloves, safety glasses, and a lab coat should be worn when handling this compound. Work in a fume hood is recommended due to the potential for vapor generation and the toxicity associated with nitrile-containing compounds. Consult the Safety Data Sheet (SDS) provided by Aladdin Scientific for complete hazard and first-aid information.

What Are the Main Research Applications?

One of the most prominent applications of Methyl 2-cyano-2-methylpropanoate is as a fragment or precursor in Reversible Addition–Fragmentation chain Transfer (RAFT) polymerization. In RAFT systems, the 2-cyanopropan-2-yl radical derived from this scaffold—commonly generated from the thermal decomposition of the related azo compound AIBN (azobisisobutyronitrile)—serves as an initiating or re-initiating radical species. The cyano and ester substituents collectively stabilize the radical, conferring good control over molecular weight and dispersity in the resulting polymers.

Beyond polymer chemistry, this compound serves as a synthetic intermediate in organic chemistry. The activated methylene equivalent provided by the quaternary carbon can be elaborated through reactions such as alkylation, condensation, and cycloaddition under appropriate conditions. The ester moiety may be selectively hydrolyzed or reduced to access carboxylic acid or alcohol derivatives respectively, expanding the structural diversity accessible from this single starting material.

Researchers in medicinal chemistry and agrochemical synthesis have also employed analogous 2-cyano-2-methylpropanoate scaffolds as building blocks for heterocyclic synthesis, including the construction of pyrimidines, triazines, and other nitrogen-rich ring systems. These downstream applications underscore the reagent's broad utility across multiple disciplines.

How Do I Order and What Purity Grades Are Available?

Methyl 2-cyano-2-methylpropanoate is available from Aladdin Scientific under SKU M186249. To place an order, visit the Aladdin Scientific website, search for the product by name or SKU, select the desired pack size, and proceed through the standard online checkout process. Registered account holders may benefit from streamlined reordering, invoice management, and access to promotional pricing.

For specific information on available purity grades, pack sizes, current pricing, and lead times, please consult the product listing at aladdin-e.com or contact Aladdin Scientific customer service directly. A Certificate of Analysis (CoA) confirming purity, appearance, and other quality parameters is available upon request or via the website for each batch. Procurement teams requiring bulk quantities or custom specifications are encouraged to reach out to the technical sales team for tailored quotations.

When evaluating purity requirements for your application, consider that synthetic and mechanistic studies in radical polymerization typically demand higher purity grades to minimize side reactions and ensure reproducibility. Confirm that the purity specification listed on the CoA meets your experimental requirements before placing an order.

Safety, Regulatory, and Compatibility Considerations

As a nitrile-containing compound, Methyl 2-cyano-2-methylpropanoate should be treated with appropriate caution. Nitrile compounds can be irritants or toxic depending on concentration and route of exposure. While the compound itself does not readily release hydrogen cyanide under normal laboratory conditions in the way that simple aliphatic nitriles might under extreme conditions, prudent laboratory practice dictates treating all nitrile-bearing reagents with care. Always consult the current SDS before first use.

Incompatible materials include strong acids, strong bases, strong oxidizing agents, and nucleophiles capable of attacking the ester or nitrile. Reactions with strong bases may lead to hydrolysis or condensation side reactions. Avoid storage near reactive metals or moisture-sensitive reagents that could lead to unintended reactivity.

Disposal must comply with local, national, and institutional regulations governing chemical waste. Do not pour down the drain without confirming local permissibility. Segregate waste from incompatible chemicals and label waste containers clearly. Users outside of the EU and US should verify applicable regional chemical regulations before import and use.