Description

[(2E,4E)-3-Methyl-5-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-2,4-pentadien-1-yl](triphenyl)phosphonium bromide is a high-purity, specialized phosphonium salt intermediate of significant importance in advanced organic synthesis. Its primary value lies in its role as a key Wittig reagent precursor, enabling the precise construction of complex polyene frameworks found in fine chemicals and active pharmaceutical ingredients (APIs). This compound is essential for research and development chemists and process engineers in the pharmaceutical, agrochemical, and specialty fragrance industries where the synthesis of specific stereoisomers is critical.

Application

• Wittig Reaction Intermediate: A crucial precursor for generating ylides used in the stereoselective synthesis of conjugated dienes and polyenes.
• Pharmaceutical Synthesis: Used in the research and production of retinoids, vitamin A analogs, and other complex molecules with polyene side chains.
• Agrochemical Active Ingredient Development: Employed in the synthesis of advanced crop protection agents requiring specific alkene geometries.
• Specialty Fragrance & Flavor Chemistry: Serves as a building block for synthesizing specific isomers of ionones and other terpenoid-derived aroma chemicals.
• Material Science Research: Potential monomer or cross-linking agent in the development of novel polymers with conjugated backbones for electronic applications.
• Academic & Process R&D: A valuable tool for methodological development in stereocontrolled olefination reactions.

Basic Information

Product Name	[(2E,4E)-3-Methyl-5-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-2,4-pentadien-1-yl](triphenyl)phosphonium bromide
CAS No.	62285-98-7
Molecular Formula	C₃₃H₄₀BrP
Molecular Weight	547.54 g/mol
Synonyms	(2E,4E)-3-Methyl-5-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4-pentadien-1-yl triphenylphosphonium bromide; (all-E)-Pseudoionyltriphenylphosphonium bromide; Pseudoionyltriphenylphosphonium bromide; Phosphonium, [(2E,4E)-3-methyl-5-(2,6,6-trimethyl-2-cyclohexen-1-yl)-2,4-pentadien-1-yl]triphenyl-, bromide; Wittig reagent precursor for pseudoionone
EINECS	Contact for details

Quality Control

Our [(2E,4E)-3-Methyl-5-(2,6,6-Trimethyl-2-cyclohexen-1-yl)-2,4-pentadien-1-yl](triphenyl)phosphonium bromide is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity, NMR for structural confirmation, and Karl Fischer titration for water content, to ensure it meets exacting R&D and process chemistry standards. A comprehensive Certificate of Analysis (COA) detailing identity, purity, 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 place at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to minimize exposure to atmospheric moisture. For long-term storage, consider using desiccants.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%
Melting Point	Contact for details
Residue on Ignition	≤ 0.5%

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