Description

Pentamethylenebis(Triphenylphosphonium Bromide) is a high-purity, bifunctional phosphonium salt widely utilized as a versatile reagent in advanced organic synthesis. Its primary value lies in its role as a robust phase-transfer catalyst and a key precursor for generating reactive ylides, enabling critical carbon-carbon bond-forming reactions. This compound is essential for R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty chemical industries, where it facilitates the synthesis of complex molecules and fine chemicals with high efficiency and selectivity.

Application

• As a phase-transfer catalyst (PTC) in biphasic reactions, enhancing reaction rates and yields in alkylation and condensation processes.
• Key reagent for the generation of Wittig ylides, crucial for the synthesis of alkenes in complex organic molecules and natural products.
• Used in the preparation of ionic liquids and functional materials due to its stable phosphonium cation structure.
• Employed as an intermediate in pharmaceutical synthesis, particularly for constructing specific carbon frameworks in active pharmaceutical ingredients (APIs).
• Facilitates polymerization reactions and serves as a catalyst in the production of specialty polymers and resins.
• Applied in agrochemical research for the development of novel herbicides and plant growth regulators.
• Utilized in material science for surface modification and the synthesis of advanced functional compounds.

Basic Information

Product Name	Pentamethylenebis(Triphenylphosphonium Bromide)
CAS No.	22884-31-7
Molecular Formula	C47H44Br2P2
Molecular Weight	830.61 g/mol
Synonyms	1,5-Bis(triphenylphosphonium)pentane dibromide; Pentamethylene-1,5-bis(triphenylphosphonium bromide); 1,5-Pentanediylbis(triphenylphosphonium) dibromide; Pentane-1,5-diylbis(triphenylphosphonium) bromide; Penta-Methylene Bis(Triphenyl Phosphonium Bromide); Penta-Methylene Bis(TPPB); Bis(triphenylphosphonium)pentane dibromide
EINECS	Contact for details

Quality Control

Our Pentamethylenebis(Triphenylphosphonium Bromide) is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC and NMR, to ensure high chemical purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory compliance 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 exclude moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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