Overview
4-Bromosalicylaldehyde is a brominated derivative of salicylaldehyde, characterized by the presence of both an aldehyde (-CHO) and a hydroxyl (-OH) group on a benzene ring with a bromine substituent at the 4-position. It is widely used in organic synthesis, particularly in the preparation of pharmaceuticals and as a ligand in coordination chemistry. This compound is valued for its reactivity, which allows it to participate in various chemical reactions, including Schiff base formation and metal complexation. Its structure makes it a versatile intermediate in the synthesis of more complex molecules.
Physical and Chemical Properties
4-Bromosalicylaldehyde is typically found as an off-white to light yellow crystalline powder. It has a molecular weight of 201.02 g/mol and a melting point of approximately 72-75°C. The compound is soluble in common organic solvents such as ethanol, methanol, and acetone but has limited solubility in water. Its chemical reactivity is dominated by the aldehyde and hydroxyl functional groups, which can participate in condensation reactions, nucleophilic additions, and coordination with metal ions. The bromine substituent adds to its utility in further functionalization via cross-coupling reactions.
Main Applications
4-Bromosalicylaldehyde is primarily used as an intermediate in the synthesis of pharmaceuticals and agrochemicals. Its ability to form Schiff bases makes it valuable in the preparation of ligands for metal complexes, which are used in catalysis and material science. In addition, it serves as a building block for the synthesis of heterocyclic compounds, which are often found in bioactive molecules. Researchers also utilize it in the development of fluorescent probes and other specialty chemicals.
Safety and Storage
4-Bromosalicylaldehyde is an irritant and should be handled with care. Proper personal protective equipment (PPE), including gloves and safety goggles, is recommended to avoid skin and eye contact. Inhalation of dust should be avoided by working in a well-ventilated area or under a fume hood. For storage, keep the compound in a tightly sealed container away from light, moisture, and incompatible substances such as strong oxidizers. Store at room temperature or below, and ensure the container is labeled with appropriate hazard information.
B2B Procurement Guide
When procuring 4-Bromosalicylaldehyde, buyers should prioritize suppliers with a proven track record of quality and reliability. Key factors to consider include purity (typically ≥98%), CAS number verification, and compliance with relevant safety and regulatory standards. Request certificates of analysis (CoA) and material safety data sheets (MSDS) from suppliers. Bulk purchases may offer cost advantages, but ensure proper storage conditions are maintained during transportation and warehousing. Compare prices from multiple suppliers, as costs can vary significantly based on purity and quantity.
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