Description

o-Xylylenebis(Triphenylphosphonium Bromide) is a high-value, bifunctional phosphonium salt widely used as a key reagent in organic synthesis. Its primary value lies in its role as a precursor to reactive o-xylylene intermediates via the Ramberg–Bäcklund reaction and other cyclization processes. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and advanced materials sectors who require precise, high-purity building blocks for complex molecule construction.

Application

• Pharmaceutical Intermediate: A critical precursor in the synthesis of complex heterocycles and strained ring systems for active pharmaceutical ingredients (APIs).
• Polymer & Material Science: Used to generate reactive intermediates for the preparation of specialized polymers, cyclophanes, and novel organic frameworks.
• Agrochemical Synthesis: Serves as a building block in the development of new crop protection agents and specialty chemicals.
• Organic Synthesis Reagent: Employed in Ramberg–Bäcklund reactions, Wittig-type olefinations, and other carbon-carbon bond-forming transformations.
• Ligand & Catalyst Development: Acts as a precursor for phosphine ligands or as a phase-transfer catalyst in specific reaction systems.
• Academic & Industrial R&D: A valuable tool for chemists exploring new synthetic methodologies and reaction mechanisms.

Basic Information

Product Name	o-Xylylenebis(Triphenylphosphonium Bromide)
CAS No.	1519-46-6
Molecular Formula	C44H38Br2P2
Molecular Weight	772.51 g/mol
Synonyms	1,2-Bis(bromomethyl)benzene bis(triphenylphosphonium) salt; α,α'-Dibromo-o-xylene bis(triphenylphosphonium bromide); o-Bis(triphenylphosphoniomethyl)benzene dibromide; o-Xylylene bis(triphenylphosphonium) dibromide; (o-Xylylene)bis(triphenylphosphonium bromide); o-Xylylenebis(TPP Bromide); o-Bis(TPP)xylylene dibromide; o-Xylylene-α,α'-bis(triphenylphosphonium bromide)
EINECS	Contact for details

Quality Control

Our o-Xylylenebis(Triphenylphosphonium Bromide) is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high chemical purity. Each lot is analyzed to confirm identity, potency, and impurity profiles. Certificates of Analysis (COA) documenting key parameters are provided and available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to minimize exposure to atmospheric moisture. For long-term storage, consider using a desiccant.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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