1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene
1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene (CAS: 141556-42-5) is an N-heterocyclic carbene (NHC) ligand with the molecular formula C21H24N2 and a molecular weight of 304.43 g/mol. It serves as a crucial component in catalysis, particularly in organometallic chemistry and organic synthesis. Its robust structure and electron-donating properties make it valuable for facilitating various chemical transformations.
- IUPAC
- 1,3-Bis(2,4,6-trimethylphenyl)imidazol-2-ylidene
- Synonyms
- 1,3-Bis(2,4,6-trimethylphenyl)imidazol-2-ylidene6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylideneC21H24N2
Organometallic Catalysis
This NHC ligand is widely employed in homogeneous catalysis, stabilising metal centres and influencing catalytic activity. It is particularly effective in cross-coupling reactions such as Suzuki-Miyaura and Buchwald-Hartwig amination.
Organic Synthesis
As a strong sigma-donating ligand, it promotes reactivity in metal complexes, enabling challenging synthetic transformations. It is useful in a range of reactions requiring stable and active catalytic species.
Materials Science
NHC ligands can be incorporated into metal-organic frameworks or used in the synthesis of novel materials with specific electronic or optical properties.
| Molecular weight | 304.43 |
|---|---|
| Empirical formula | C21H24N2 |
| Assay | 97% |
| Storage temperature | −20°C |
| Melting point | 140 °C |
Hazard statements
- H228Flammable solid
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 1325 4.1 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 10-36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene used for?
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This compound is primarily used as an N-heterocyclic carbene (NHC) ligand in organometallic catalysis and organic synthesis, facilitating various chemical transformations.
What are the CAS number and formula for this compound?
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The CAS number is 141556-42-5 and the empirical formula is C21H24N2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product with an assay of 97%. It is not represented as USP, BP, EP, or any pharmacopoeia grade.
How should 1,3-Bis(2,4,6-trimethylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene be handled?
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This compound is flammable and an irritant. Handle with appropriate personal protective equipment, including eyeshields, gloves, and a suitable respirator. Store away from heat and ignition sources, and avoid breathing dust/fume/gas/mist/vapours/spray.
How is this chemical shipped and exported?
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This chemical is classified under UN 1325, Hazard Class 4.1, Packing Group III, and is exported by Tech Serve Solutions in compliance with international shipping regulations.
How can I request a sample or quote?
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To request a sample or a quotation, please contact our sales department through the website or by telephone.
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