18-Crown-6

General description

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18-Crown-6 is a macrocyclic polyether used to synthesize ionic liquid based crown-ether coordination compounds.

18-Crown-6 is the simplest crown ether that can be prepared by reacting triethylene glycol with triethylene glycol dichloride in the presence of potassium hydroxide as a base. 18-Crown-6 can solubilize metal salts, particularly potassium salts, in nonpolar and dipolar aprotic solvents. Thus, it is widely used as a phase transfer catalyst. It can also be used as a metal complexing agent to prepare a variety of molecular complexes.

Application

Can be useful as phase-transfer catalysts.

18-Crown-6 can be used as a catalyst for:       

• N-alkylation of heterocyclic compounds in the presence of tert-butoxide base.      
• Allylation of aldehydes to corresponding homoallylic alcohols using potassium allyltrifluoroborate.     
•   Preparation of N-propargylpyrrole by the reaction of pyrrole with potassium hydroxide.     
•   Polymerization of methacrylic esters and hindered alkyl acrylates.       
• Chemoselective reduction of fused tetrazoles with NaBH₄ and potassium hydroxide.

18-Crown-6 can solubilize metal salts, particularly potassium salts, in nonpolar and dipolar aprotic solvents. Thus, it is widely used as a phase transfer catalyst. It can also be used as a metal complexing agent to prepare a variety of molecular complexes.

Other Notes

Macrocyclic polyethers with repeating (-CH₂CH₂O) units. The compounds are ionophoric (form stable complexes with cations).

UPC:

51373407

Weight:

1.00 Ounces

HazmatClass:

No

Quantity:

1

Unit of Measurement:

G

WeightUOM:

LB

MPN:

2749

CAS Number:

17455-13-9