P-TOLUENESULFONIC ACID N-BUTYL ESTER

P-TOLUENESULFONIC ACID N-BUTYL ESTER (CAS 778-28-9)

It is a high-activity alkylating reagent and organic synthetic intermediate, mainly applied in pharmaceuticals, pesticides, polymer materials and fine chemical industries, which can provide butylated functional groups and activate reaction sites.

1. **Pharmaceutical Intermediates**

Applied in the synthesis of anti-inflammatory, antibacterial, anti-tumor and other medicines. It acts as a key building block to introduce n-butyl groups or activate sulfonate groups. It is also used for the construction of heterocyclic compounds as well as functional group protection and deprotection, improving reaction selectivity and yield.

2. **Pesticides and Agrochemicals**

Serves as an intermediate for manufacturing herbicides, insecticides and plant growth regulators. It introduces hydrophobic n-butyl groups to enhance lipophilicity and bioavailability. It is also a raw material for synthesizing pesticide emulsifiers and dispersants to improve formulation stability and drug efficacy.

3. **Polymer Material Industry**

Used as a chain transfer agent in polymerization reactions to precisely control polymer molecular weight and molecular weight distribution, and improve processing fluidity. It can be used as toughening agent and cross-linking agent for cellulose acetate to boost mechanical strength and heat resistance. It is also applied in modification of epoxy resin and polyurethane to strengthen adhesion and weather resistance.

4. **Organic Synthesis and Fine Chemicals**

As a universal butylating agent, it is applicable to N/O/S-butylation reaction of nucleophilic substrates such as alcohols, phenols, amines and carboxylic acids. It is used in the synthesis of dyes, flavors and photosensitive materials to introduce n-butyl side chains or activate aromatic rings. It can also act as phase transfer catalyst and reaction solvent to accelerate heterogeneous reactions and raise reaction efficiency.

5. **Other Applications**

Electronic chemicals: Used in the synthesis of photoresist and electronic paste to optimize adhesion and resolution.

Surfactants: Applied to synthesize anionic and non-ionic surfactants for daily chemical products and industrial cleaning fields.

Contact information:

Contact: Sophia Li

Email: sophia@coreychem.com