Polyethylene glycol methyl ether

Nitrogen alkylation occurs easily under sonochemical conditions [128], Indole and carbazole undergo N-alkylation with increased rates and yields under sonication in the presence of polyethylene glycol methyl ether as PTC. No reaction occurs in the absence of the PTC (Eq. 3.28). 

Similarly, Chien et al. used a poly(acrylic acid)/poly(acrylamide) (PAA/PAM) multilayer system in which PAA was replaced by PAA conjugated with photoreactive 4-azidoaniline (AZ) after several bilayers [110]. As a result, the polyelectrolyte multilayer could be covalently crosslinked by UV irradiation through a mask. For an enhanced cell repellence, poly(allylamine) was conjugated with polyethylene glycol methyl ether) and incorporated into the top layers of the film. 

Wong and co-workers [22] also applied the methodology in the preparation of a library of neomycin B mimetics (Fig. 6). Two libraries were prepared by a multiple-component condensation of neamine derived aldehyde, f-butyl isocyanide or isocyanoacetic acid methyl ester, CBZ-N amino acids (xl3) and a glycine conjugated polyethylene glycol methyl ether. The products of the reaction were isolated by precipitation. 

Finally, SIP of polyethylene glycol methyl ether methacrylate (PEGMA) was carried out, and PS/Poly(PEGMA) segregated binary brashes were prepared. SIP ATRP of PEGMA was carried out with maximum precaution to avoid oxygen. For this purpose, CuBr (80.3 mg, 0.56 mmol), CuBr2 (50 mg,... 

The sonochemical alkylation at a nitrogen atom appeared for the first time in a paper by Davidson et al A t)q)ical example is given in Eq. 48, and many others are known. With carbazole, the rate increase is high, ca. 50 times, but the presence of polyethylene glycol methyl ether as a PTC is necessary. Alkylation of macrocyclic amines was improved by sonication in the presence of potassium hydroxide (Eq. 49), and quatemization is avoided. A practically quantitative yield is observed, even without PTC, but in this particular case, a phase transfer autocatalytic mechanism is probable. o... 

Dual-responsive polymer-based systems have been also proposed. The design and synthesis of polymers containing cholic acid pendant groups has been reported. Random copolymers derived from 2-(metha-ctyloylo gr)ethyl cholate (MAECA) with polyethylene glycol methyl ether... 

MC MDI MEKP MF MMA MPEG MPF NBR NDI NR OPET OPP OSA PA PAEK PAI PAN PB PBAN PBI PBN PBS PBT PC PCD PCT PCTFE PE PEC PEG PEI PEK PEN PES PET PF PFA PI PIBI PMDI PMMA PMP PO PP PPA PPC PPO PPS PPSU Methyl cellulose Methylene diphenylene diisocyanate Methyl ethyl ketone peroxide Melamine formaldehyde Methyl methacrylate Polyethylene glycol monomethyl ether Melamine-phenol-formaldehyde Nitrile butyl rubber Naphthalene diisocyanate Natural rubber Oriented polyethylene terephthalate Oriented polypropylene Olefin-modified styrene-acrylonitrile Polyamide Poly(aryl ether-ketone) Poly(amide-imide) Polyacrylonitrile Polybutylene Poly(butadiene-acrylonitrile) Polybenzimidazole Polybutylene naphthalate Poly(butadiene-styrene) Poly(butylene terephthalate) Polycarbonate Polycarbodiimide Poly(cyclohexylene-dimethylene terephthalate) Polychlorotrifluoroethylene Polyethylene Chlorinated polyethylene Poly(ethylene glycol) Poly(ether-imide) Poly(ether-ketone) Polyethylene naphthalate Polyether sulfone Polyethylene terephthalate Phenol-formaldehyde copolymer Perfluoroalkoxy resin Polyimide Poly(isobutylene), Butyl rubber Polymeric methylene diphenylene diisocyanate Poly(methyl methacrylate) Poly(methylpentene) Polyolefins Polypropylene Polyphthalamide Chlorinated polypropylene Poly(phenylene oxide) Poly(phenylene sulfide) Poly(phenylene sulfone)... 

The Sepasolv MPE process (BASF) [667], [685] is similar and uses polyethylene glycol methyl isopropyl ether. No commercial plants are in operation so far. 

It is well known that alkali and alkaline earth cations are very difficult to complex due to the configuration of the rare gas electronic structure of these ions. Fortunately, some specific ligands are known, such as aprotic dipolar solvents (dimethylformamide, sulfolane, dimethylsulfoxide, N-methyl pyrolidone and so on), aminoxides, phosphinoxides, glymes and polyethylene glycols, crown ethers and cryptates, bidentate amines (tetramethyl ethylene diamine, 1,10 phenanthroline, etc. [14, 53, 61, 68]. 

Chem. Descrip. Polyethylene wax (21%) disp. in dipropylene glycol methyl ether (79%)... 

Synonyms Methoxy polyethylene glycol PEG methyl ether Polyethylene glycol monomethyl ether... 

Synonyms Dimethoxy polyethylene glycol Glycols, polyethylene, dimethyl ether a,u)-Methoxypoly (ethylene oxide) Polyethylene glycol dimethyl ether Poly (oxy-1,2-ethanediyl), o-methyl-u-methoxy-Formula (C2H40)2C2He0 Toxicology TDLo (oral, male rabbit, 1 day premating) 2500 mg/kg reproductive effector TSCA listed... 

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