Quaternary Ammonium Phase Transfer Catalysts for Organic Synthesis
Aure Chemical supplies quaternary ammonium phase transfer catalysts including TBAB, TBAHS and BTEAC / TEBA for customers working on organic synthesis, nucleophilic substitution, alkylation, oxidation, interfacial reactions and fine chemical production. These PTC reagents help transfer reactive species between immiscible phases and support more efficient reaction systems in specialty chemical applications.
This page is part of Aure Chemical’s broader quaternary ammonium salts product range. As a China-based sourcing and export partner, Aure Chemical supports buyers with product selection, specification review, SDS / COA documentation and export coordination for phase transfer catalyst procurement.
What Are Quaternary Ammonium Phase Transfer Catalysts?
Quaternary ammonium phase transfer catalysts are organic salts that enable reactions between aqueous and organic phases that would otherwise remain separated. By carrying ions or reactive species across the phase boundary, these catalysts improve contact between reagents and can make two-phase reactions more practical.
In organic synthesis, phase transfer catalysts are commonly used for nucleophilic substitution, alkylation, oxidation and other interfacial reactions. Products such as TBAB, TBAHS and BTEAC are widely evaluated in fine chemical synthesis, pharmaceutical intermediate routes and specialty chemical process development.
Key Phase Transfer Catalysts for Organic Synthesis
Aure Chemical supports sourcing of common quaternary ammonium phase transfer catalysts used in laboratory, pilot and industrial organic synthesis. The table below summarizes the main products, common search terms and typical application focus areas.
| Product | CAS No. | Common Search Terms | Typical Application Focus |
|---|---|---|---|
| Tetrabutylammonium Bromide / TBAB | 1643-19-2 | TBAB, Tetrabutylammonium Bromide, Tetra-n-butylammonium Bromide, Phase Transfer Catalyst, PTC Reagent | Phase transfer catalysis, nucleophilic substitution, organic synthesis, interfacial reactions, electrolyte-related applications |
| Tetrabutylammonium Hydrogen Sulfate / TBAHS / TBAS | 32503-27-8 | TBAHS, TBAS, Tetrabutylammonium Hydrogen Sulfate, Tetrabutylammonium Bisulfate, Phase Transfer Catalyst | Alkylation, oxidation, phase transfer catalysis, fine chemical synthesis, aqueous-organic reactions |
| Benzyltriethylammonium Chloride / BTEAC / TEBA | 56-37-1 | BTEAC, TEBA, Benzyltriethylammonium Chloride, Benzyltriethylammonium Chloride Phase Transfer Catalyst | Organic synthesis, fine chemical intermediates, phase transfer catalysis, nucleophilic substitution |
Applications in Organic Synthesis and Interfacial Reactions
Quaternary ammonium phase transfer catalysts are often used to accelerate nucleophilic substitution reactions by transferring anions from aqueous or solid phases into organic media. This function is especially valuable in organic synthesis where direct contact between reactants is limited by phase separation.
In alkylation and oxidation processes, PTC reagents such as Tetrabutylammonium Bromide / TBAB can help improve reaction efficiency by increasing mass transfer between immiscible phases. This may support cleaner conversion, shorter reaction times and more practical process conditions depending on the specific route.
Tetrabutylammonium Hydrogen Sulfate / TBAHS is often evaluated where tetrabutylammonium hydrogen sulfate or bisulfate functionality is preferred for aqueous-organic phase reactions. It can be considered in selected alkylation, oxidation and fine chemical synthesis systems where compatibility with the reaction medium is important.
Benzyl-substituted quaternary ammonium catalysts such as Benzyltriethylammonium Chloride / BTEAC are used in organic transformations where a benzyltriethylammonium salt is selected as the phase transfer catalyst. These products are relevant for specialty synthesis, intermediate production and process development projects that require reliable PTC reagents.
How to Select TBAB, TBAHS or BTEAC
Selection of a phase transfer catalyst depends on the reaction system, solvent pair, target transformation, impurity control requirements and compatibility with downstream processing. The following table provides a practical starting point for comparing TBAB, TBAHS and BTEAC during technical and procurement evaluation.
| Selection Need | Relevant Product | Procurement Note |
|---|---|---|
| General-purpose phase transfer catalysis in organic synthesis | TBAB | Commonly evaluated as a versatile quaternary ammonium PTC; final specification should be confirmed by COA. |
| Phase transfer catalysis for alkylation, oxidation or aqueous-organic systems | TBAHS / TBAS | Useful where tetrabutylammonium hydrogen sulfate is preferred for reaction compatibility or process design. |
| Benzyl-substituted quaternary ammonium catalyst for fine chemical synthesis | BTEAC / TEBA | Suitable for organic transformations where benzyltriethylammonium chloride is selected as the PTC reagent. |
Supply, Documentation and Export Support
Aure Chemical works as a sourcing and export partner for quaternary ammonium phase transfer catalysts rather than as a manufacturer. Our role is to help customers match reaction and procurement requirements with suitable product options, review available specifications and prepare documentation for international sourcing.
For TBAB, TBAHS, BTEAC and related PTC reagents, final specification, packaging, purity parameters and transport requirements should be confirmed according to supplier COA and SDS before order confirmation.
Specification Review: Aure Chemical can assist with specification comparison and product selection based on reaction route, application requirements and target quality parameters.
SDS and COA Support: SDS, COA and related product documentation can be provided for quality, safety and compliance review.
Packaging Discussion: Packaging options can be discussed according to product form, quantity, stability and destination requirements.
Export Coordination: Shipment arrangements, labeling and transport documentation can be coordinated according to final SDS and carrier requirements.
Related Quaternary Ammonium Application Areas
Customers working with organic synthesis catalysts may also evaluate cationic etherifying agents for starch and cellulose when the project involves modified natural polymers such as starch, cellulose or guar gum. For water-soluble polymer production, cationic monomers for water treatment polymers are more suitable than PTC reagents.
Electrochemical and analytical projects may require quaternary ammonium electrolytes and ion-pair reagents rather than phase transfer catalysts. These products are typically selected for supporting electrolyte functions, ion-pair methods and related research applications.
Zeolite and catalyst preparation projects often rely on tetrapropylammonium salts for zeolite synthesis as structure-directing agents. For upstream synthesis or custom chemical routes, quaternary ammonium precursors and specialty intermediates may support project development.
Request Quaternary Ammonium Phase Transfer Catalysts from Aure Chemical
For inquiries about quaternary ammonium phase transfer catalysts such as TBAB, TBAHS or BTEAC, please contact Aure Chemical with the product name, CAS No., target specification, quantity and destination. Our team can discuss sourcing options, documentation requirements and suitable export arrangements for organic synthesis, fine chemical synthesis and specialty chemical projects.