Description

1,3-Bis(2,4,6-Trimethylphenyl)-Imidazolidinium-Chloride is a high-purity, advanced N-heterocyclic carbene (NHC) precursor salt, essential for modern organometallic catalysis. This compound matters because it serves as a critical ligand source for generating highly active and selective metal catalysts used in fine chemical and pharmaceutical synthesis. Industrial researchers and process chemists in the pharmaceutical, agrochemical, and specialty polymer sectors need it to develop efficient, scalable cross-coupling and polymerization reactions.

Application

• As a precursor for N-heterocyclic carbene (NHC) ligands in homogeneous catalysis.
• For the synthesis of palladium, gold, and ruthenium NHC complexes used in cross-coupling reactions (e.g., Suzuki, Heck, Sonogashira).
• In the development of olefin metathesis catalysts for ring-closing and ring-opening polymerization processes.
• As a key intermediate in pharmaceutical research for constructing complex molecular architectures.
• For academic and industrial R&D in advanced organometallic chemistry and catalyst design.
• In the preparation of catalysts for asymmetric synthesis to produce enantiomerically pure compounds.

Basic Information

Product Name	1,3-Bis(2,4,6-Trimethylphenyl)-Imidazolidinium-Chloride
CAS No.	173035-10-4
Molecular Formula	C21H27ClN2
Molecular Weight	342.90 g/mol
Synonyms	1,3-Bis(2,4,6-Trimethylphenyl)imidazolidinium Chloride; 1,3-Dimesitylimidazolidinium Chloride; H2IMes·HCl; N,N'-Bis(2,4,6-Trimethylphenyl)imidazolidinium Chloride; 1,3-Bis(2,4,6-Trimethylphenyl)-4,5-dihydro-1H-imidazol-3-ium Chloride; Imidazolidinium, 1,3-bis(2,4,6-trimethylphenyl)-, chloride; NHC Precursor Salt (H2IMes·HCl)
EINECS	Contact for details

Quality Control

Our 1,3-Bis(2,4,6-Trimethylphenyl)-Imidazolidinium-Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and elemental analysis, to ensure high purity and consistent performance as a catalyst precursor. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be handled under an inert atmosphere (e.g., nitrogen or argon) for long-term storage and to maintain stability.

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	≤ 20 ppm

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