Understanding CAS 111 55 7 An Insight into a Unique Chemical Compound
The chemical compound designated as CAS 111-55-7 is known as methyl 4-methylbenzenesulfonate, also commonly referred to as methyl p-toluenesulfonate. As an important chemical in both industrial and laboratory settings, this compound features prominently in organic synthesis and chemical reactions due to its unique properties and reactivity.
Chemical Structure and Properties
Methyl p-toluenesulfonate is characterized by a relatively simple structure. It consists of a methyl group attached to a p-toluenesulfonyl group, which is key to its reactivity profile. The sulfonate functional group (-SO3-), combined with the aromatic ring, provides both steric and electronic characteristics that make the compound useful in various chemical reactions, especially in nucleophilic substitutions.
This compound is a clear, colorless liquid with a slightly sweet odor, and it has a boiling point of approximately 207 °C. Methyl p-toluenesulfonate is soluble in many organic solvents, making it an excellent reagent for a wide range of organic reactions. Its molecular formula \(C_8H_{10}O_3S\) reflects the presence of a sulfonyl functionality, which plays a critical role in its reactivity.
Understanding CAS 111 55 7 An Insight into a Unique Chemical Compound
One of the primary uses of CAS 111-55-7 is in the synthesis of various organic intermediates. Its ability to act as an electrophilic sulfonate makes it a valuable reagent for introducing sulfonate groups into organic molecules. This characteristic is particularly useful in processes where the enhanced leaving group ability of a sulfonate is needed.
cas 111 55 7

A significant application of methyl p-toluenesulfonate lies in the synthesis of alcohols. During nucleophilic substitution reactions, alcohols can be formed from the reactions of various nucleophiles with the sulfonate ester, leading to a diverse range of compounds. For example, when reacted with sodium acetate, it can yield methyl acetate, a compound widely utilized in the production of flavors and fragrances.
Moreover, its function as a protecting group in organic synthesis cannot be overlooked. Functional groups that are sensitive to certain reaction conditions can be protected by converting them into their corresponding sulfonate esters. Once the desired transformations are complete, the sulfonate group can be removed under mild conditions, thus restoring the original functional group.
Safety and Handling
While methyl p-toluenesulfonate is a useful reagent, it is crucial to handle it with care. Like many chemical compounds, it can pose health risks if not managed properly. Exposure to skin, eyes, or respiratory pathways should be minimized by using appropriate personal protective equipment (PPE). Safety data sheets (SDS) should always be consulted to understand the potential hazards associated with its use, including flammability and toxicity concerns.
Storage of this compound should occur in a cool, well-ventilated area, away from incompatible substances, especially strong oxidizers. Proper labeling and waste disposal procedures must also be adhered to, ensuring compliance with local and international regulations.
Conclusion
In summary, CAS 111-55-7, or methyl p-toluenesulfonate, is a pivotal compound in the realm of organic synthesis, known for its unique properties and versatile applications. From facilitating nucleophilic substitutions to acting as a protecting group, its role cannot be overstated in both industrial manufacturing and academic research. With specific attention to safety and handling practices, it continues to be a valuable tool in the advancement of chemistry, paving the way for new discoveries and innovations in various chemical processes. As research continues to evolve, the potential applications of this compound are likely to expand, showcasing the ever-growing importance of organic compounds in modern science.