I agree Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our website without changing the browser settings you grant us permission to store that information on your device.
Polyethylene glycol is used in a variety of pharmaceutical formulations. It finds application in Hewlett-Packard designjet printers as an ink solvent and a lubricant for the print heads. It is an important raw material for the manufacture of polyuretnae, PEG salts of lauric, oleic and stearic acids and latex.
Polyethylene glycols can act as effective solvents and low-cost phase-transfer catalysts by complexing with cations (see Appendix 2). Examples of reactions promoted by these species:
Nucleophilic displacements of benzyl halides: Synthesis, 184 (1977). Permanganate oxidations: J. Org. Chem., 43, 1532 (1978); Tetrahedron Lett., 3543 (1979). Dichromate oxidations; similar results to carcinogenic HMPA, and to crown ethers.
Good solvent for borohydride reductions: Tetrahedron Lett., 4581 (1979). Stereoselective reduction of alkynes to cis-alkenes using NaBH4 and a catalytic amount of PdCl2 in dichloromethane-PEG: J. Chem. Soc., Chem. Commun., 515 (1982).
Wacker oxidation of olefins to methyl ketones: Tetrahedron Lett., 26, 2263 (1985). Conversion of acids to peracids; see Potassium peroxydisulfate, A15310. Recyclable medium for rapid Baylis-Hillman reactions (see Ammonium bismuth citrate, A17003): Tetrahedron Lett., 45, 5865 (2004).
Liu, W.; Wang, Y.; Li, W.; Yang, Y.; Wang, N.; Song, Z.; Xia, X. F.; Wang, H. Polyethylene Glycol-400-Functionalized Dicationic Acidic Ionic Liquids for Highly Efficient Conversion of Fructose into 5-Hydroxymethylfurfural. Catal. Lett. 2015, 145 (4), 1080-1088.
Din, A. M.; Ahmad, M. A.; Hameed, B. H. Ordered mesoporous carbons originated from non-edible polyethylene glycol 400 (PEG-400) for chloramphenicol antibiotic recovery from liquid phase. Chem. Eng. J. 2015, 260, 730-739.