1-Butyl-4-methylpyridinium chloride, CAS: 112400-86-9

Key Applications:

• Catalysis & Organic Synthesis

• • Functions as a phase‑transfer catalyst, enabling efficient nucleophilic substitutions and alkylation reactions.
  • Supports alkene dimerization and oligomerization, where pyridinium salts stabilize carbocationic intermediates.
  • Serves as a reaction medium for transition‑metal‑catalyzed couplings due to its thermal stability and polarity.
• Electrochemical Applications

• • Acts as an electrolyte component in electrochemical devices, leveraging its ionic conductivity and wide electrochemical window.
  • Useful in supercapacitor and battery electrolyte formulations, particularly where chloride anions support redox cycling.
• Solvent & Extraction Medium

• • Employed as a designer solvent for organic and inorganic solutes, benefiting from low volatility and tunable polarity.
  • Applied in liquid–liquid extraction of metal ions and organic compounds, especially where chloride coordination is advantageous.
• Materials Science & Polymer Processing

• • Used in polymer dissolution and modification, including cellulose and specialty polymer systems.
  • Supports ionic liquid‑assisted templating for nanoporous materials.
• Surfactant & Inclusion Complex Studies

• • Pyridinium ionic liquids are widely used to study host–guest interactions (e.g., cyclodextrin inclusion complexes), micellization, and self‑assembly behavior — a use case supported by the literature on closely related pyridinium ILs.

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