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• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Thiophenes 2,3,5-trisubstituted thiophenes

Properties and Applications of 3-iodo-2,5-dimethylthiophene (CAS No. 40197-02-2)

3-iodo-2,5-dimethylthiophene, identified by its CAS number 40197-02-2, is a significant compound in the field of organic synthesis and pharmaceutical chemistry. This heterocyclic aromatic molecule features a thiophene core substituted with two methyl groups at the 2- and 5-positions, further functionalized with an iodine atom at the 3-position. The unique structural arrangement of this compound makes it a valuable intermediate in the synthesis of various bioactive molecules, including pharmaceuticals and agrochemicals.

The iodo-substituted thiophene structure of 3-iodo-2,5-dimethylthiophene contributes to its reactivity in cross-coupling reactions, such as Suzuki-Miyaura and Stille couplings, which are widely employed in the construction of complex organic frameworks. These reactions are pivotal in the development of novel therapeutic agents, where the introduction of diverse functional groups at specific positions on the thiophene ring can modulate biological activity. The presence of methyl groups at the 2- and 5-positions enhances the stability of the molecule while providing additional sites for further chemical modification.

In recent years, 3-iodo-2,5-dimethylthiophene has garnered attention in medicinal chemistry due to its role as a precursor in the synthesis of thieno[3,2-b]pyrroles and related fused heterocycles. These structures have shown promise in inhibiting enzymes involved in cancer progression and infectious diseases. For instance, derivatives of thieno[3,2-b]pyrroles have been investigated for their potential to disrupt protein-protein interactions critical to pathogenic processes. The iodine atom in 3-iodo-2,5-dimethylthiophene facilitates further functionalization via palladium-catalyzed reactions, enabling the creation of structurally diverse libraries for high-throughput screening.

The pharmaceutical industry has leveraged 3-iodo-2,5-dimethylthiophene in the development of small-molecule inhibitors targeting bacterial resistance mechanisms. Thiophene derivatives are known for their antimicrobial properties, and modifications at the 3-position can enhance binding affinity to bacterial enzymes such as DNA gyrase and topoisomerase. Preliminary studies indicate that incorporating an iodine atom improves solubility and bioavailability, critical factors for drug efficacy. Additionally, computational modeling has suggested that the rigid thiophene core enhances interactions with biological targets, making 3-iodo-2,5-dimethylthiophene a versatile scaffold for drug design.

Beyond pharmaceutical applications, 3-iodo-2,5-dimethylthiophene finds utility in materials science, particularly in the synthesis of organic semiconductors and optoelectronic materials. Thiophene-based polymers exhibit excellent charge transport properties, making them suitable for use in organic light-emitting diodes (OLEDs) and photovoltaic cells. The iodine substituent can influence electronic characteristics by altering energy levels and electron delocalization within the conjugated system. Researchers have explored its incorporation into donor-acceptor copolymers to optimize charge injection and extraction processes.

The synthesis of 3-iodo-2,5-dimethylthiophene typically involves halogenation reactions on pre-functionalized thiophenes or direct iodination strategies using reagents such as N-Iodosuccinimide (NIS) or molecular iodine under controlled conditions. Advances in catalytic systems have enabled milder reaction conditions with higher yields, reducing waste generation and improving sustainability. Green chemistry principles have been applied by employing solvent-free or aqueous-based systems to minimize environmental impact while maintaining high reaction efficiency.

Recent advancements in flow chemistry have further enhanced the preparation of 3-iodo-2,5-dimethylthiophene, allowing for scalable production with precise control over reaction parameters. Continuous flow reactors provide advantages such as improved reproducibility and heat management, which are essential for industrial applications. This approach has been particularly beneficial in multi-step syntheses where intermediate isolation is challenging.

The role of computational chemistry in optimizing synthetic routes for 3-iodo-2,5-dimethylthiophene cannot be overstated. Molecular modeling techniques predict reaction outcomes with high accuracy, enabling researchers to design experiments more efficiently. Density functional theory (DFT) calculations have been used to elucidate transition states and understand mechanistic pathways, leading to innovative synthetic strategies that might not be evident through traditional experimental methods.

In conclusion,3-iodo-2,5-dimethylthiophene (CAS No. 40197-02-2) is a multifaceted compound with broad applications across pharmaceuticals and materials science. Its unique structural features make it an indispensable intermediate for constructing complex molecules with biological activity. As research progresses，the demand for high-quality starting materials like this iodinated thiophene derivative will continue to grow，driven by innovations in drug discovery and advanced materials development.

• 16494-35-2(Thiophene,4-iodo-2-methyl-)
• 16494-34-1(3-Iodo-2-methylthiophene)
• 16494-38-5(Thiophene, 3,5-diiodo-2-methyl-)
• 483355-22-2(2,2'-Bithiophene, 3,3'-diiodo-5,5'-dimethyl-)
• 61285-28-7(Thiophene, 3-iodo-2-methyl-5-phenyl-)
• 61285-26-5(Thiophene, 3-iodo-5-methyl-2-phenyl-)
• 112051-60-2
• 18799-87-6(3-Iodo-2,5-thiophenedicarbaldehyde)
• 930-97-2(3-iodothiophene-2-carbaldehyde)
• 40197-05-5(Thiophene, 3,4-diiodo-2,5-dimethyl-)