Description

Trimethylenebis(Triphenylphosphonium Bromide) is a versatile and highly reactive bisphosphonium salt, widely utilized as a key reagent in organic synthesis. Its primary value lies in its ability to act as a robust Wittig reagent precursor, facilitating the efficient synthesis of complex alkenes and other valuable intermediates. This compound is essential for research chemists and process development scientists in the pharmaceutical, agrochemical, and advanced materials sectors.

Application

• Wittig Reaction Reagent: A crucial precursor for generating ylides used in the stereoselective synthesis of alkenes for pharmaceuticals and fine chemicals.
• Phase-Transfer Catalyst (PTC): Employed in reactions involving the transfer of anions from an aqueous phase to an organic phase, enhancing reaction rates and yields.
• Polymerization Catalyst/Co-catalyst: Used in the synthesis of specialized polymers and resins, including epoxy curing agents.
• Organic Synthesis Intermediate: Serves as a building block for constructing complex molecular architectures in medicinal chemistry and material science.
• Ligand for Metal Complexes: Can be used to modify the properties of transition metal catalysts in various coupling and hydrogenation reactions.
• Research & Development: A fundamental tool in academic and industrial R&D labs for exploring new synthetic methodologies.

Basic Information

Product Name	Trimethylenebis(Triphenylphosphonium Bromide)
CAS No.	7333-67-7
Molecular Formula	C39H36Br2P2
Molecular Weight	702.47 g/mol
Synonyms	1,3-Bis(triphenylphosphonio)propane dibromide; Trimethylene bis(triphenylphosphonium) bromide; Propane-1,3-diylbis(triphenylphosphonium) dibromide; 1,3-Propanediylbis(triphenylphosphonium) dibromide; TPPB; Bis(triphenylphosphonium)propane dibromide; NSC 169021
EINECS	Contact for details

Quality Control

Our Trimethylenebis(Triphenylphosphonium Bromide) is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect reactivity and stability.

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.