5-bromobenzothiazole, identified by the CAS number 768-11-6, is a high - quality chemical compound. It typically appears as a white to off - white crystalline powder. The molecular formula of 5 - bromobenzothiazole is C₇H₄BrNS, and its molecular weight is approximately 214.08 g/mol. It has a melting point that usually ranges from 100 - 104°C. This compound is known for its high purity, usually above 98%, which makes it suitable for a variety of applications in different industries.
5 - bromobenzothiazole has a wide range of applications. In the pharmaceutical industry, it serves as a key intermediate in the synthesis of various drugs. Due to its unique chemical structure, it can participate in different chemical reactions to form complex pharmaceutical compounds. Some of these drugs may have anti - inflammatory, antibacterial, or anti - tumor properties. In the field of materials science, it can be used in the preparation of organic semiconductors. Organic semiconductors made from 5 - bromobenzothiazole - based compounds have potential applications in organic light - emitting diodes (OLEDs), organic photovoltaic cells (OPVs), and other optoelectronic devices. Additionally, it is also used in the research and development of new chemical compounds, where chemists can use it to introduce specific functional groups into molecules during the synthesis process.
When handling 5 - bromobenzothiazole, it is essential to follow strict safety protocols. First, it should be stored in a cool, dry, and well - ventilated place away from direct sunlight and heat sources. Wear appropriate personal protective equipment, including gloves, safety goggles, and a lab coat. In a laboratory setting, when using it for chemical synthesis, accurate weighing is crucial. Use a precise balance to measure the required amount of the compound. Dissolve it in a suitable solvent, such as dichloromethane or ethanol, depending on the reaction conditions. During the reaction process, control the reaction temperature and time carefully according to the specific reaction requirements. After the reaction is complete, purification steps such as filtration, distillation, or chromatography may be necessary to obtain the desired product.
Caso 1: Síntesis farmacéutica
A pharmaceutical research team was working on developing a new anti - inflammatory drug. They used 5 - bromobenzothiazole as an intermediate. First, they reacted 5 - bromobenzothiazole with a specific amine compound in the presence of a palladium catalyst. The reaction was carried out at 80°C for 6 hours under an inert nitrogen atmosphere. After the reaction, they purified the product by column chromatography. The final compound showed promising anti - inflammatory activity in in vitro cell tests.
Case 2: Organic Semiconductor Preparation
A materials science group was preparing an organic semiconductor for OLED applications. They incorporated 5 - bromobenzothiazole into a polymer matrix through a series of chemical reactions. They first functionalized 5 - bromobenzothiazole with an alkyl group to improve its solubility. Then they polymerized it with other monomers. The resulting polymer was spin - coated on a glass substrate to form a thin - film organic semiconductor. The OLED device fabricated using this semiconductor showed improved luminous efficiency compared to some traditional materials.
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