Product Introduction

Tetrabutylammonium Hydrogen Sulfate (TBAHS, CAS No. 32503-27-8) is a quaternary ammonium salt widely used as a phase transfer catalyst, ion-pair reagent, and synthetic auxiliary reagent in organic chemistry.

Containing a tetrabutylammonium cation and hydrogen sulfate anion, TBAHS provides efficient transfer of ionic species between aqueous and organic phases, improving reaction efficiency in heterogeneous organic transformations.

Due to its excellent phase-transfer ability and compatibility with various reaction systems, Tetrabutylammonium Hydrogen Sulfate is extensively applied in organic synthesis, catalytic reactions, analytical chemistry, and pharmaceutical intermediate preparation.

Mechanism / Principle

Phase Transfer Catalysis

Tetrabutylammonium Hydrogen Sulfate functions primarily through phase transfer catalysis.

Working principle:

1. The tetrabutylammonium ion forms ion pairs with reactive anions.
2. The ion pair transfers ionic reactants from the aqueous phase into the organic phase.
3. The transferred species participate in organic reactions more efficiently.
4. The catalyst is regenerated and continues the catalytic cycle.

Key features:

• Efficient ion transfer capability
• Enhances heterogeneous reaction rates
• Improves substrate accessibility
• Compatible with various organic solvents

Key Research Applications

1. Phase Transfer Catalysis

TBAHS is widely used as a phase transfer catalyst in organic synthesis.

Applications include:

• Nucleophilic substitution reactions
• Alkylation reactions
• Oxidation reactions
• Condensation reactions

2. Organic Synthesis

Tetrabutylammonium Hydrogen Sulfate supports various synthetic transformations.

Applications include:

• Carbon–carbon bond formation
• Functional group modification
• Heterocyclic compound synthesis
• Organic reaction optimization

3. Pharmaceutical Intermediate Synthesis

TBAHS is used as a catalytic additive in pharmaceutical chemistry.

Applications include:

• Drug intermediate preparation
• Synthetic route development
• Fine chemical synthesis
• Process improvement studies

4. Analytical Chemistry

Tetrabutylammonium salts are commonly used as ion-pair reagents.

Applications include:

• Ion-pair chromatography
• Separation of ionic compounds
• Analytical method development
• HPLC-related research

5. Green Chemistry and Catalysis Research

TBAHS is investigated as an efficient catalyst in environmentally friendly synthesis.

Applications include:

• Solvent-efficient reactions
• Catalytic methodology development
• Alternative reaction systems
• Sustainable organic synthesis

Advantages

• Excellent phase transfer catalytic activity
• Improves reaction efficiency in biphasic systems
• Stable quaternary ammonium structure
• Suitable for diverse organic transformations
• Useful ion-pair reagent
• Widely applied in synthetic chemistry

Storage & Handling

• Store in a cool place.
  Keep container tightly closed in a dry and well-ventilated place.
  Containers which are opened must be carefully resealed and kept upright to prevent leakage.
  hygroscopic.

Research Areas

Researchers working in the following fields may benefit from Tetrabutylammonium Hydrogen Sulfate:

• Organic synthesis
• Phase transfer catalysis
• Pharmaceutical chemistry
• Analytical chemistry
• Green chemistry
• Catalysis research
• Fine chemical synthesis

Q1: What is Tetrabutylammonium Hydrogen Sulfate?

A: Tetrabutylammonium Hydrogen Sulfate (CAS No. 32503-27-8) is a quaternary ammonium salt commonly used as a phase transfer catalyst and ion-pair reagent.

Q2: What is TBAHS used for?

A: TBAHS is mainly used for:

• Phase transfer catalysis
• Organic synthesis
• Ion-pair chromatography
• Pharmaceutical intermediate preparation

Q3: How does TBAHS work as a phase transfer catalyst?

A: It transfers ionic reactants between immiscible phases by forming soluble ion pairs, improving reaction efficiency.

Q4: Is Tetrabutylammonium Hydrogen Sulfate used in HPLC?

A: Yes. Tetrabutylammonium salts can be used as ion-pair reagents in analytical chromatography.

Q5: What type of compound is TBAHS?

A: It is a quaternary ammonium salt composed of a tetrabutylammonium cation and hydrogen sulfate anion.

Q6: What are the advantages of TBAHS compared with inorganic catalysts?

A: TBAHS provides better compatibility with organic solvents and improves mass transfer in biphasic reaction systems.

Q7: How should TBAHS be stored?

A: Store it in a sealed container in a dry environment and protect it from moisture.

Q8: What are alternatives to Tetrabutylammonium Hydrogen Sulfate?

A: Related phase transfer catalysts include:

• Tetrabutylammonium bromide (TBAB)
• Tetrabutylammonium chloride (TBAC)
• Tetrabutylammonium iodide (TBAI)
• Benzyltriethylammonium chloride (TEBA)