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

Introduction to 4,4,5,5-Tetramethyl-2-(4-phenylethynylphenyl)-1,3,2dioxaborolane (CAS No. 1190376-20-5)

4,4,5,5-Tetramethyl-2-(4-phenylethynylphenyl)-1,3,2dioxaborolane, identified by its CAS number 1190376-20-5, is a specialized organoboron compound that has garnered significant attention in the field of synthetic chemistry and pharmaceutical research. This boryl compound belongs to the class of dioxaborolane derivatives, which are known for their utility in cross-coupling reactions, particularly in the Suzuki-Miyaura coupling process. The presence of a phenylethynyl group and a highly substituted tetramethyl framework imparts unique reactivity and stability characteristics, making it a valuable intermediate in the synthesis of complex organic molecules.

The structure of this compound features a central boron atom coordinated to two oxygen atoms in a dioxaborolane moiety, which is flanked by four methyl groups for steric stabilization. The aromatic ring system is further functionalized with a phenylethynyl substituent at the 2-position, enhancing its compatibility with various catalytic systems used in modern synthetic methodologies. This combination of structural features makes it an attractive candidate for applications in medicinal chemistry and materials science.

In recent years, the demand for efficient and scalable synthetic routes to biologically active compounds has driven considerable interest in boron-containing intermediates. 4,4,5,5-Tetramethyl-2-(4-phenylethynylphenyl)-1,3,2dioxaborolane has been employed in the preparation of novel heterocyclic scaffolds and pharmacophores. Its ability to participate in regioselective cross-coupling reactions allows for the rapid assembly of complex molecular architectures, which is crucial for drug discovery efforts. Researchers have leveraged this compound to develop inhibitors targeting various disease pathways, including cancer and inflammatory disorders.

One of the most compelling aspects of this compound is its role in the development of boron-containing therapeutics. Boronated compounds have shown promise as both diagnostic agents and therapeutic drugs due to their unique chemical properties. For instance, derivatives of dioxaborolanes have been explored as precursors for radiopharmaceuticals used in positron emission tomography (PET) imaging. The stability and reactivity of 4,4,5,5-Tetramethyl-2-(4-phenylethynylphenyl)-1,3,2dioxaborolane make it an ideal candidate for such applications, where precise control over molecular structure is essential.

The Suzuki-Miyaura coupling reaction has been extensively utilized in the synthesis of biaryl compounds, which are prevalent in many pharmaceuticals. The phenylethynyl group in this compound serves as an excellent coupling partner due to its ability to undergo palladium-catalyzed transformations under mild conditions. This has enabled chemists to construct intricate molecular frameworks with high fidelity. Furthermore, the tetramethyl substitution pattern enhances the electronic properties of the boron center, influencing its reactivity in cross-coupling processes.

Recent advancements in transition-metal catalysis have expanded the utility of organoboron compounds like 4,4,5,5-Tetramethyl-2-(4-phenylethynylphenyl)-1,3,2dioxaborolane. New catalytic systems have been developed that improve reaction efficiency and selectivity while reducing byproduct formation. These innovations have opened up possibilities for applying this compound in large-scale syntheses and industrial processes. For example, recent studies have demonstrated its use in the preparation of conjugated polymers for organic electronics applications.

The pharmaceutical industry has also benefited from the versatility of this boryl compound. Researchers have utilized it as a building block for synthesizing small-molecule inhibitors that modulate enzyme activity. By incorporating boron into drug candidates, scientists can enhance binding affinity and metabolic stability while maintaining biological activity. Several preclinical studies have highlighted the potential of boron-containing molecules as next-generation therapeutics.

From a mechanistic standpoint, 4,^4,5,^5,Tetramethyl-2-(4-phenylethynylphenyl)-1,^3,_{2dioxaborolane}, exhibits interesting reactivity patterns that are influenced by its steric and electronic environment. The bulky tetramethyl group provides steric protection to the boron center while allowing for selective functionalization at other positions on the molecule. This balance between stability and reactivity makes it a versatile tool for synthetic chemists working on complex target molecules.

In conclusion, 4,^4,_{Tetramethyl-2-(4-phenylethynylphenyl)^-1,dioxaborolane (CAS No.}1190376-20-5), represents a significant advancement in organoboron chemistry with broad applications across pharmaceuticals and materials science. Its unique structural features enable participation in key synthetic transformations while maintaining high selectivity and yield. As research continues to uncover new methodologies for utilizing boron-containing compounds, this boryl derivative is poised to remain at forefront of innovation.

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