1. Performance Chemicals

• Strong Organic Base: BTMAH acts as a strong base, enabling deprotonation reactions and the formation of reactive intermediates in various chemical transformations.
• Phase-Transfer Catalyst: Its unique structure allows it to act as a phase-transfer catalyst, improving the solubility of reactants in different phases and accelerating reaction rates.
• Aldol Condensations: It is used as a catalyst in aldol condensation reactions, where two carbonyl compounds condense to form a β-hydroxy ketone or aldehyde.
• Dehydration Reactions: BTMAH facilitates base-catalyzed dehydration reactions, which involve the removal of water from a molecule.
• Synthesis of Activated Ynesulfonamides and Tertiary Enesulfonamides: BTMAH is used as a base in the synthesis of these compounds.

2. Pharmaceuticals

• Base Catalyst: BTMAH acts as a strong base in various organic reactions, including aldol condensations, dehydration reactions, and Horner-Wadsworth-Emmons olefination reactions. 
• Phase-Transfer Catalyst: It is a popular phase-transfer catalyst, particularly in combination with benzyltriethylammonium salts, facilitating reactions between substances that are not readily soluble in the same solvent. 
• Precursor for Other Compounds: BTMAH is used to produce benzyltrimethylammonium acetate (NBz111AcO), which is then used to dissolve cellulose, a crucial component in various pharmaceutical formulations.
• Dithiocarbamates: BTMAH is involved in the preparation of dithiocarbamates, which are used in various pharmaceutical syntheses. 
• Hydroxy-dithioethers: It is also used in the synthesis of dihydroxy-dithioethers.