Monoalkyl ethers

Upon reaction with an alcohol in the presence of a catalyst, the monoalkyl ether of ethylene glycol is obtained ... 

The monoalkyl ethers with R = CHj, CjHj and C4H, , known respectively as methyl ceUoaolve, ceUosolve and hutyl cellosolve, are of great commercial value, particularly as solvents, since they combine the properties of alcohols and ethers and are miscible with water. Equally important compounds are the carbitols (monoalkyl ethers of diethyleneglycol) prepared by the action of ethylene oxide upon the monoethers of ethylene glycol ... 

Table 5. Applications for Glycol Monoalkyl Ethers, R0(CH2CH20) H ...

Miscellaneous Resins. Much less important than the melamine—formaldehyde and urea—formaldehyde resins are the methylo1 carbamates. They are urea derivatives since they are made from urea and an alcohol (R can vary from methyl to a monoalkyl ether of ethylene glycol). 

A number of polyethylene glycols are also available in molecular weight ranges from commercial suppliers. These are made by initiating the polymerization of ethylene oxide by hydroxide ion. The corresponding monomethyl (or monoalkyl ethers) can be made in a similar fashion by initiating the polymerization with an alcohol. The general reaction is shown below in Eq. (7.2). 

This is the only column we have found that separates the cellosolves (monoalkyl ethers at ethylene glycol) and the other solvents including the xylenes. (See Supelco GC Bulletin 824.)... 

Our laboratory has investigated adsorption behavior at air/water and Hg/water interfaces, the adsorption potentials caused by the aliphatic nitriles," dinitriles,monoalkyl ethers" dialkylethers" propalgyl alcohol, and dimethysulfoxide. The influence of the relative positions of two OH groups using the isomeric butanodiols has been also studied. ... 

Monoalkyl ethers of (R,R) 1,2-bis[3,5-bis(trifluoromethyl)phenyl]ethanediol, 24, have been examined for the enantioselective protonation of silyl enol ethers and ketene disilyl acetals in the presence of SnCU (Scheme 12.21) [25]. The corresponding ketones and carboxylic acids have been isolated in quantitative yield. High enantioselectivities have been observed for the protonation of trimethylsilyl enol ethers derived from aromatic ketones and ketene bis(trimethylsilyl)acetals derived from 2-arylalkanoic acids. 

Stemmier, K., D. J. Kinnison, and J. Alistair Kerr, Room Temperature Rate Coefficients for the Reactions of OH Radicals with Some Monomethylene Glycol Monoalkyl Ethers, J. Phys. Chem., 100, 2114-2116 (1996). 

Ethyleneglycol Monoalkyl Ethers are compds of general formula RO,CH2.CH2.OH where R stands for methyl, ethyl, proply, butyl, etc radicals. They are described here as Ethyleneglycol Butyletber, Ethyleneglycol Ethyl-ether and Ethyleneglycol Methylether. Their, toxicities are described in the following refs ... 

W.F. von Oettingen, The Acute Toxicity of Vapors of Several Monoalkyl Ethers of Ethylene Glycol , Journal of Industrial Hygiene and Toxicology, 25(4), April. 1943> pp 157—63(12 refs)... 

Ethyl n-propylmalonate, 486 Ethyl n-propyl ketone, 340 4-Ethylpyridine, 844 Ethyl 2-pyridylacetate, 931, 932 Ethyl salicylate, 783 Ethyl sulphite, 304 Ethyl -valerate, 382, 389 Ethyl vinylacetate, 382, 389 Ethylenediamine-adipic acid polymer, 1019,1025 Ethylene glycol, 285 Ethylene glycol, monoalkyl ethers of, 170, 444... 

An often studied group of nonionic surfactants (emulsifiers) is poly(ethylene oxide) monoalkyl ether of the general structure CmH2m+1-(OCH2CH2)n-OH (Cm-(EO)n). 

Decomposition of Glycol Monoalkyl Ethers 2RMgX + CjHsOCHjCOjCjH, C,H,OCH,C(OH)R,... 

A large number of symmetrical diaryl- or dialkyl-acetaldehydes, difficult to obtain by other means, have been prepared by the reaction of ethyl ethoxyacetate, or ethyl phenoxyacetate, with Grignard reagents followed by treatment of the resulting glycol monoalkyl ether with anhydrous oxalic acid or dilute sulfuric acid. The yield in the first step is 40-80%, and the yield in the subsequent transformation is 50-80%. 

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