Description

3,3'-Methylenebis[1-(2,6-Diisopropylphenyl)-3-Imidazolium Bromide] is a high-purity, advanced ionic liquid and N-heterocyclic carbene (NHC) precursor of significant interest in modern synthetic chemistry. Its value lies in its role as a versatile and highly effective ligand precursor for the generation of transition metal catalysts, particularly for cross-coupling and olefin metathesis reactions. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty polymer industries who require precise and efficient catalytic systems for complex molecular synthesis.

Application

• Precursor for N-Heterocyclic Carbene (NHC) Ligands used in organometallic catalysis.
• Key component in the synthesis of palladium and ruthenium catalysts for cross-coupling reactions (e.g., Suzuki, Heck, Negishi).
• Ligand source for olefin metathesis catalysts (e.g., Grubbs-Hoveyda type), critical in polymer and fine chemical production.
• Building block for ionic liquids with tailored properties for green chemistry and separation processes.
• Intermediate in pharmaceutical research for developing novel active pharmaceutical ingredients (APIs).
• Use in material science for creating functionalized surfaces and advanced polymeric materials.
• Catalyst research and development for asymmetric synthesis in agrochemical and fragrance manufacturing.

Basic Information

Product Name	3,3'-Methylenebis[1-(2,6-Diisopropylphenyl)-3-Imidazolium Bromide]
CAS No.	889617-36-1
Molecular Formula	C38H52Br2N4
Molecular Weight	724.66 g/mol
Synonyms	1,1'-Methylenebis(3-(2,6-diisopropylphenyl)imidazolium) dibromide; Bis(2,6-diisopropylphenyl)imidazolium methylene dibromide; NHC precursor salt; Imidazolium-based ionic liquid; SIPr·HBr dimer; 3,3'-(Methylenedi-1H-imidazole-3,1-diyl)bis(2,6-diisopropylphenyl) bromide; Catalyst ligand precursor
EINECS	Contact for details

Quality Control

Our 3,3'-Methylenebis[1-(2,6-Diisopropylphenyl)-3-Imidazolium Bromide] is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and NMR for structural confirmation, to ensure it meets the high standards required for catalytic and synthetic applications. Certificates of Analysis (COA) detailing all specifications are 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 place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be handled under a dry inert atmosphere (e.g., nitrogen or argon) to prevent degradation. Keep the container tightly sealed when not in use.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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