Description

(2-Butyl)Triphenylphosphonium Bromide is a high-purity organophosphorus salt widely utilized as a versatile reagent in organic synthesis. Its primary value lies in its role as a robust and efficient phase-transfer catalyst and a key precursor for generating phosphorus ylides in Wittig olefination reactions. This compound is essential for researchers and process chemists in the pharmaceutical, agrochemical, and advanced materials sectors who require reliable, high-quality intermediates for constructing complex molecular architectures.

Application

• Wittig Reaction Reagent: Serves as a crucial precursor for generating phosphorus ylides used in the synthesis of alkenes, a fundamental transformation in medicinal chemistry and fine chemical production.
• Phase-Transfer Catalyst (PTC): Facilitates reactions between reagents in immiscible phases, enhancing reaction rates and yields in alkylation, esterification, and other industrial processes.
• Pharmaceutical Intermediate: Employed in the synthesis of active pharmaceutical ingredients (APIs) and other biologically active molecules requiring specific alkene functionalities.
• Agrochemical Synthesis: Used in the production of herbicides, pesticides, and plant growth regulators where precise carbon-carbon double bond formation is critical.
• Polymer & Material Science: Acts as a monomer or modifying agent in the development of specialized polymers, including phosphonium-based ionic liquids and flame-retardant materials.
• Organic Synthesis Research: A valuable tool in academic and industrial R&D laboratories for exploring new catalytic pathways and constructing complex organic molecules.

Basic Information

Product Name	(2-Butyl)Triphenylphosphonium Bromide
CAS No.	3968-92-1
Molecular Formula	C22H24BrP
Molecular Weight	399.30 g/mol
Synonyms	2-Butyltriphenylphosphonium Bromide; Butyltriphenylphosphonium Bromide; (n-Butyl)triphenylphosphonium Bromide; Triphenyl(2-butyl)phosphonium Bromide; Phosphonium, butyltriphenyl-, bromide; n-Butyltriphenylphosphonium Bromide; P-Butyltriphenylphosphonium Bromide
EINECS	223-567-4

Quality Control

Every batch of (2-Butyl)Triphenylphosphonium Bromide is manufactured under a strict quality management system and undergoes comprehensive analytical testing to ensure it meets the high standards required for synthetic applications. We provide full traceability and Certificates of Analysis (COA) detailing purity, identity, and impurity profiles. Our quality commitment aligns with cGMP principles where applicable, ensuring reliability for critical R&D and scale-up processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and should be handled in a dry environment to prevent degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	< 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.