1,3-Bis (2,6-diisopropylphenyl) imidazolium chloride Property

Melting point:

278 °C (dec.)(lit.)

storage temp. 

Inert atmosphere,Room Temperature

form 

Powder

color 

White, off-white or tan

Water Solubility 

Slightly soluble in water.

Sensitive 

Hygroscopic

InChIKey

AVJBQMXODCVJCJ-UHFFFAOYSA-M

CAS DataBase Reference

250285-32-6(CAS DataBase Reference)

Safety

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

WGK Germany 

3

TSCA 

No

HS Code 

29332900

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

1,3-Bis (2,6-diisopropylphenyl) imidazolium chloride Chemical Properties,Usage,Production

Chemical Properties

White to Light yellow to Light orange powder to crystal. soluble in methanol.

Uses

1,3-Bis(2,6-diisopropylphenyl)imidazolium chloride is also used in organic synthesis, as well as a pharmaceutical intermediate. 1,3-Bis(2,6-diisopropylphenyl)imidazolium Chloride is used as a reagent in the synthesis of NHC Copper(I) complexes bearing dipyridylamine ligands which exhibit interesting luminescent properties and are potential candidates for organic light-emitting diode applications. 1,3-Bis(2,6-diisopropylphenyl)imidazolium Chloride is also used as a reagent in the synthesis of 5,6-Dimethyl-9-oxo-9H-xanthene-4-acetic Acid Methyl Ester (D476595); the methyl ester derivative of the drug Vadimezan (V084950).

Application

1,3-Bis(2,6-Diisopropylphenyl)imidazolium chloride is also used as a reagent in the synthesis of 5,6-Dimethyl-9-Oxo-9H-xanthene-4-acetic acid methyl ester; the methyl ester derivative of the drug Vadimezan. Moreover, it is an imidazolium salt that is active against all stages of Trypanosoma Cruzi and may represent a promising candidate for treatment of Chagas disease.

Definition

1,3-Bis (2,6-diisopropylphenyl) imidazolium chloride, also known as IDip HCl or IPr HCl, is a common N-heterocyclic carbene precursors. It could used to produce a novel iron(III)-containing imidazolium salt [DIPrim][FeCl4] which is an effective and easy-to-use catalyst for the cross-coupling of aryl Grignard reagents with primary and secondary alkyl halides bearing β -hydrogens[1-2].

Reactions

Precursor to Pd catalysts used in C-N and C-C coupling reactions.
Ligand used in double carbonylation reactions.
Precursor to Ni catalysts used in C-N coupling reactions.
Precursor to Cu catalysts used in copper hydride reactions.
Ligand used in Ru-catalyzed carbonylative C-H cyclization of 2-aryl phenols.

Safety

H300 (37.84%): Fatal if swallowed [Danger Acute toxicity, oral]
H315 (62.16%): Causes skin irritation [Warning Skin corrosion/irritation]
H317 (37.84%): May cause an allergic skin reaction [Warning Sensitization, Skin]
H318 (37.84%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
H319 (62.16%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
H335 (100%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
H400 (37.84%): Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
H410 (37.84%): Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]

References

Suzuki-Miyaura Reaction
Esterification of α-Halo-α,β-unsaturated Aldehydes by Using a Carbene Catalyst
Cycloaddition of CO2 to Epoxides Catalyzed by N-Heterocyclic Carbene (NHC)–ZnBr2 System under Mild Conditions

[1] Yan C, et al. An efficient and recyclable iron(III)-containing imidazolium salt catalyst for cross-coupling of aryl Grignard reagents with alkyl halides. Science Bulletin, 2012; 57: 1953–1958.
[2] Hans M, et al. Efficient synthetic protocols for the preparation of common N-heterocyclic carbene precursors. Beilstein Journal of Organic Chemistry, 2015; 11: 2318–2325.