Ethyl 3-bromo-1H-1,2,4-triazole-5-carboxylate(CAS: 774608-89-8)

Ethyl 3-bromo-1H-1,2,4-triazole-5-carboxylate is a crystalline solid with a molecular weight of approximately 256.02 g/mol. It has a low solubility in water but is soluble in organic solvents like ethanol and acetone. The compound is less reactive under normal conditions but can undergo nucleophilic substitution reactions, particularly with amines, leading to the formation of substituted triazoles.

Ethyl 3-bromo-1H-1,2,4-triazole-5-carboxylate is usually synthesized via a bromination reaction of ethyl 1H-1,2,4-triazole-5-carboxylate with N-bromosuccinimide (NBS) or similar brominating agents. The reaction is typically conducted in the presence of a suitable solvent such as dichloromethane. The yield is about 75-80%, and the reaction is selective towards the bromination of the triazole ring.

Ethyl 3-bromo-1H-1,2,4-triazole-5-carboxylate is used in various industries, particularly in pharmaceuticals for the synthesis of medicinal compounds. It is also utilized in the production of polymers, sensors, and semiconductors where its bromine-containing triazole structure is utilized for its reactivity and functional group potential.

When handling Ethyl 3-bromo-1H-1,2,4-triazole-5-carboxylate, it is essential to wear appropriate personal protective equipment (PPE) such as gloves, goggles, and a lab coat. The compound should be used in a well-ventilated area or a fume hood to prevent inhalation of fumes. In case of a spill, it should be cleaned up carefully with appropriate absorbent materials, and the area should be ventilated. Always refer to the Safety Data Sheet (SDS) for detailed handling and emergency procedures.