Description

4,4'(5')-Dibromodibenzo-18-Crown-6 is a functionalized crown ether derivative, specifically a brominated analog of dibenzo-18-crown-6. This compound matters as a versatile and selective complexing agent, prized for its ability to bind specific cations and modify chemical reactivity in advanced synthesis. It is primarily needed by researchers and process chemists in the pharmaceutical, agrochemical, and materials science industries for applications in phase-transfer catalysis, molecular recognition, and as a key intermediate in supramolecular chemistry.

Application

• Phase-Transfer Catalyst (PTC): Facilitates reactions between reagents in immiscible phases, particularly useful in alkylation and nucleophilic substitution reactions.
• Ion-Selective Electrodes & Sensors: Serves as an ionophore in membrane compositions for detecting specific alkali and alkaline earth metal ions.
• Supramolecular Chemistry Building Block: Acts as a precursor for synthesizing more complex crown ether derivatives, rotaxanes, and catenanes.
• Metal Ion Separation & Extraction: Used in liquid-liquid extraction processes to selectively separate and purify metal ions from complex mixtures.
• Polymer Modification: Incorporated into polymer backbones to create ion-conductive or cation-selective membranes for filtration and energy applications.
• Organic Synthesis Intermediate: The bromine substituents provide reactive sites for further functionalization via cross-coupling reactions (e.g., Suzuki, Heck).
• Analytical Chemistry Reagent: Employed in chromatographic separations and as a shift reagent in NMR spectroscopy for ion analysis.

Basic Information

Product Name	4,4'(5')-Dibromodibenzo-18-Crown-6
CAS No.	87016-67-9
Molecular Formula	C₂₀H₂₂Br₂O₆
Molecular Weight	518.20 g/mol
Synonyms	4,4'-Dibromodibenzo-18-crown-6; 4',5'-Dibromodibenzo-18-crown-6; 4,4'(5')-Dibromo-dibenzo-18-crown-6; Dibenzo-18-crown-6, 4,4'(5')-dibromo-; 4,4'-Dibromodibenzo-18-crown-6 ether; DB24C8-Br2; Brominated Dibenzo-18-Crown-6; 1,4,7,10,13,16-Hexaoxacyclooctadeca-2,3,11,12-tetrayne, 5,6,14,15-tetrahydro-, 4,4'(5')-dibromo- (IUPAC)
EINECS	Contact for details

Quality Control

Our 4,4'(5')-Dibromodibenzo-18-Crown-6 is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity assessment and NMR for structural confirmation, to ensure consistency and compliance with research-grade specifications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory documentation needs.

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). Keep away from incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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