• 1. Structurally and electronically modulated spin interaction of transient biradicals in two photon-gated stepwise photochromism
  Izumi Yonekawa,Katsuya Mutoh,Yoichi Kobayashi,Jiro Abe Photochem. Photobiol. Sci. 2018 17 290

• Solvents and Organic Chemicals Organic Compounds Benzenoids Benzene and substituted derivatives Bromobenzenes
• Solvents and Organic Chemicals Organic Compounds Benzenoids Benzene and substituted derivatives Halobenzenes Bromobenzenes

Introduction to 3-Bromo-4-methylphenylboronic Acid (CAS No. 1312765-69-7)

3-Bromo-4-methylphenylboronic acid is a specialized organoboron compound that has garnered significant attention in the field of pharmaceutical chemistry and materials science due to its versatile applications. This compound, identified by the Chemical Abstracts Service Number (CAS No.) 1312765-69-7, features a phenyl ring substituted with both a bromine atom at the 3-position and a methyl group at the 4-position, along with a boronic acid functional group. The unique structural configuration of this molecule makes it a valuable intermediate in organic synthesis, particularly in cross-coupling reactions such as the Suzuki-Miyaura coupling, which is widely employed in the construction of complex molecular architectures.

The significance of 3-Bromo-4-methylphenylboronic acid lies in its role as a building block for the synthesis of various pharmacologically active compounds. Boronic acids are well-known for their ability to participate in metal-catalyzed coupling reactions, enabling the formation of carbon-carbon bonds under mild conditions. This property has made them indispensable in the development of novel drug candidates, where efficient and scalable synthetic routes are crucial. The presence of both bromine and methyl substituents on the phenyl ring further enhances the reactivity and selectivity of this compound, making it an attractive choice for medicinal chemists seeking to introduce specific functional groups into their molecular frameworks.

In recent years, there has been a surge in research focused on developing new methodologies for the application of boronic acids in drug discovery. One notable area of interest is the use of 3-Bromo-4-methylphenylboronic acid in the synthesis of kinase inhibitors, which are critical targets in oncology research. Kinases play a pivotal role in cell signaling pathways, and their dysregulation is often associated with various diseases, including cancer. By leveraging the Suzuki-Miyaura coupling reaction, researchers have been able to construct highly specific kinase inhibitors that exhibit potent activity against disease-causing kinases. The structural features of 3-Bromo-4-methylphenylboronic acid, such as its bromine and methyl substituents, allow for fine-tuning of binding interactions with target proteins, thereby enhancing the efficacy and selectivity of these inhibitors.

Moreover, 3-Bromo-4-methylphenylboronic acid has found applications beyond pharmaceuticals in the realm of materials science. For instance, it has been utilized in the synthesis of organic electronic materials, such as organic light-emitting diodes (OLEDs) and organic photovoltaics (OPVs). The ability to precisely control molecular architecture through cross-coupling reactions has enabled the development of advanced materials with tailored optoelectronic properties. The bromine substituent on the phenyl ring provides a handle for further functionalization via palladium-catalyzed reactions, allowing chemists to design complex polymers and small molecules with desired characteristics.

The synthesis of 3-Bromo-4-methylphenylboronic acid typically involves multi-step organic transformations starting from commercially available aromatic precursors. A common synthetic route involves bromination followed by methylation of a halogenated aromatic compound, followed by conversion to the boronic acid derivative. Advances in synthetic methodologies have led to more efficient and sustainable processes for producing this compound, aligning with the growing emphasis on green chemistry principles. For instance, catalytic methods that minimize waste and reduce energy consumption have been explored to enhance the scalability and environmental footprint of its production.

In conclusion, 3-Bromo-4-methylphenylboronic acid (CAS No. 1312765-69-7) is a multifaceted compound with broad applications in pharmaceuticals and materials science. Its unique structural features make it an invaluable intermediate for constructing complex molecules via cross-coupling reactions. As research continues to evolve, new applications and synthetic strategies for this compound are likely to emerge, further solidifying its importance in modern chemistry. The ongoing exploration of its potential in drug discovery and advanced materials underscores its significance as a chemical entity worthy of continued study and innovation.

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