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Description
2,5-Dibromothiazole is a heterocyclic building block based on a thiazole core carrying two bromine atoms, one at position 2 and one at position 5. The thiazole ring itself is a structural motif of considerable importance in medicinal chemistry, natural products, and agricultural chemicals, which is why a starting material that already carries two points of functionalization is highly valued in synthesis laboratories. Researchers use it to install aryl, alkenyl, alkynyl, or amine groups onto the thiazole framework in a stepwise manner, so that libraries of derivative compounds can be built systematically from a single common starting material.
The characteristic that makes this compound a preferred choice is the difference in reactivity between position 2 and position 5. Position 2 sits adjacent to both the nitrogen and the sulfur atom, making it more electron-poor and therefore more readily reactive, while position 5 is comparatively less activated. This difference allows selective sequential functionalization simply by adjusting the reaction conditions, something that is difficult to achieve when two separate starting materials are used instead. The thiazole ring is also aromatic and tolerant of many reaction conditions, while the carbon–bromine bonds are ready to undergo palladium-catalyzed cross-coupling as well as halogen–metal exchange reactions at low temperature.
In Indonesian laboratories, this building block is typically used in university and institutional research groups working on medicinal chemistry, materials chemistry, and agrochemical discovery, where a reliable heterocyclic scaffold is needed as the entry point of a multi-step synthetic route. It is normally handled on a small research scale, weighed out for coupling reactions in a fume hood, and drawn from the same container across several successive experiments so that a consistent derivative series can be prepared from one lot.
Laboratory Applications
- Palladium-catalyzed cross-coupling chemistry: the two carbon–bromine bonds serve as ready handles for coupling partners, letting researchers attach aryl, alkenyl, or alkynyl groups directly onto the thiazole core.
- Sequential selective functionalization: the reactivity difference between the more electron-poor position 2 and the less activated position 5 allows one site to be modified first and the other afterwards under adjusted conditions.
- Halogen–metal exchange at low temperature: the carbon–bromine bonds respond to exchange chemistry, giving access to organometallic thiazole intermediates that can then be quenched with a wide range of electrophiles.
- Medicinal chemistry scaffold construction: because the thiazole ring is a recurring motif in drug-like molecules, this dibrominated version acts as a convenient entry point into pharmacologically relevant heterocyclic frameworks.
- Systematic compound library synthesis: a single common starting material with two functionalization points lets a research group build an entire series of related derivatives without sourcing multiple different precursors.
Specifications
- Brand: TCI
- Product code: D3960
- CAS number: 4175-78-4
- Chemical name: 2,5-Dibromothiazole
- Category: Chemistry > Building Blocks > Heterocyclic Building Blocks
- Pack sizes: available in standard TCI research-scale catalogue packaging; please confirm the size required when ordering
- Storage: keep the container tightly closed in a cool, dry, well-ventilated place away from light and incompatible materials
Handling and Storage
Store the product in its original tightly closed container in a cool, dry, and well-ventilated area, protected from direct sunlight and away from heat sources, oxidizing agents, and other incompatible materials. Amber glass or the manufacturer's supplied container is suitable for keeping the material protected from light and moisture. Handle the compound inside a functioning fume hood and wear standard laboratory personal protective equipment, including safety goggles, chemical-resistant gloves, and a laboratory coat. Avoid inhalation of dust or vapour and contact with skin and eyes. Reseal the container promptly after each use, label any working aliquots clearly, and consult the manufacturer's safety data sheet before first use and for disposal guidance in accordance with your institution's chemical waste procedures.
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