Overview
2-Bromoindole is a brominated derivative of indole, a heterocyclic aromatic compound. It serves as a versatile intermediate in organic synthesis, particularly in the pharmaceutical and agrochemical industries. The bromine atom at the 2-position makes it a valuable building block for further functionalization. Its reactivity allows for cross-coupling reactions, such as Suzuki or Heck couplings, enabling the construction of complex molecules. The compound is typically supplied as a crystalline solid with high purity (≥98%) for laboratory and industrial use.
Physical and Chemical Properties
2-Bromoindole exhibits typical properties of halogenated indoles. It is stable under inert conditions but may decompose under prolonged exposure to light or moisture. The bromine atom increases its molecular weight and alters its electronic properties compared to unsubstituted indole. The compound's solubility profile favors organic solvents, making it unsuitable for aqueous reactions without modification. Its melting point (60-65°C) is lower than many pharmaceutical intermediates, requiring careful handling during high-temperature processes.
Main Applications
In pharmaceuticals, 2-bromoindole is used to synthesize tryptamine derivatives, kinase inhibitors, and other bioactive molecules. Its structure is a key motif in many drug discovery programs targeting neurological and oncological pathways. Agrochemical applications include the synthesis of plant growth regulators and pesticides. Researchers also employ it as a fluorescent probe or ligand in coordination chemistry due to its electron-rich aromatic system.
Safety and Storage
As a brominated compound, 2-bromoindole requires careful handling to avoid inhalation or skin contact. Use fume hoods, nitrile gloves, and protective eyewear during manipulation. Spills should be contained with inert absorbents and disposed of as halogenated waste. Storage recommendations include amber glass bottles under nitrogen atmosphere at 2-8°C for long-term stability. Larger quantities may be stored in sealed plastic drums with desiccants to prevent moisture absorption.
B2B Procurement Guide
When sourcing 2-bromoindole, prioritize suppliers with ISO-certified manufacturing facilities and detailed COA (Certificate of Analysis). Key specifications to verify include HPLC purity (≥98%), residual solvent levels, and heavy metal content. Bulk purchases (kilogram scale) typically offer cost advantages, but validate storage capabilities first. For research-grade quantities, consider vendors specializing in fine chemicals with batch-to-batch consistency guarantees. Lead times may vary from 2-6 weeks depending on customization needs.
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