Ethers 2- ethoxy

Ethyl teri-Butyl Ether. 2-Ethoxy-2-methylpro-... 

Ethylene glycol monoethyl ether (2-ethoxy-ethanol) 293 0.323 0.523 0.396-0.600... 

Et ether 2-Ethoxy-l-ethanesulfonic acid C4H,o04S M 154.187 Syrup. d 1.359. 

Monoethyl Ether 2-Ethoxy Ethanol 2(2-Ethoxy-Ethoxy) Ethanol 2(2-Methoxy-Ethoxy) Ethanol Ethylene Glycol Monoethyl Ether... 

Gossypitol tetraethyl ether. 2-Ethoxy-l-(2-hydroxy-3,4,6-triethoxyphenyl) ethanone, 1351... 

Synonyms Bis (2-ethoxyethyl) ether Diethyl Carbitol Diethyidiglycol Diglycol diethyl ether 1-Ethoxy-2-(P-ethoxyethoxy) ethane Ethoxyethyl ether 2-Ethoxy-ethyl ether Ethyl diglyme 3,6,9-Trioxaundecane Classification Glycol ether Empirical C.H-5O3 Formula C2H50(C2H40)2C2H5... 

Ethyl ether, ethoxy ethane, ether, ethyl oxide, sulfuric ether, not petroleum ether Reference codes... 

Most of the examples published have involved reactions of vinyl ethyl ether (ethoxy-ethene) (11) or, less frequently, of vinyl methyl ether (methoxyethene) (12), used to extend the carbon skeleton by 2 carbon atoms (Table 1), or propenyl ethyl ether (1-ethoxyprop-l-ene) (13) and 1-methoxy-1-methylethene (14), used for extending the carbon skeleton by three carbon atoms (Table 2). 

Stability. In the food industry, where steam sterilisation is required, PES is used instead of PS. Among the newer membranes in use are polyimide (PI) polymeric membranes. Poly-imide UF membranes are promising because of their resistance to many organic solvents [32] such as hexane, benzene, methanol, acetic acid, acetone, ethyl ether, ethoxy ethanol and chlorinated hydrocarbons. 

Dowanol TE Methyl Ether Ethoxy Triglycol Epoxidized Tall Oil, Octyl Ester Octyl Epoxy Tallate... 

To a mixture of 0.10 mol of 1-ethoxy-l,2-heptadiene (see this chapter, Exp. 13) and 120 ml of diethyl ether was added 1 g of copper(I) bromide. A solution of butyl magnesium bromide in about 200 ml of diethyl ether, prepared from 0.25 mol of butyl bromide (see Chapter II, Exp. 5) was added in 15 min. The reaction was weakly exothermic and the temperature rose slowly to about 32°C. The mixture was held for an additional 40 min at that temperature, then the black reaction mixture was... 

To a mixture of 25 ml of water and 3 ml of 95% sulfuric acid were added 40 ml of DMSO. The mixture was cooled to 10°C and 0.20 mol of l-ethoxy-l,4-hexadiyne (see Chapter III, Exp. 51) was added with vigorous stirring in 15 min. During this addition, which was exothermic, the temperature of the mixture was kept between 20 and 25 0. After the addition stirring was continued for 30 min at 3S C, then 150 ml of water were added and six extractions with diethyl ether were carried out. The combined extracts were washed with water and dried over magnesium sulfate. Evaporation of the solvent in a water-pump vacuum, followed by distillation through a 25-cm... 

In connection with mechanistic studies on the Wacker reaction, the transmetallation of ri-ethoxy- and /3-hydroxyethylmercury(II) chloride with PdCB has been carried out, giving ethyl vinyl ether and acetaldehyde[366]. The reaction proceeds by the formation of ri-ethoxy- and /3-hydroxyethylpalladium chlorides (401), which decompose as soon as they are formed. 

Aromatics containing electron releasing groups such as phenols, dim ethyl am in oben 2en e and indole are formylated by 2-ethoxy-l,3-dithiolane in the presence of boron trifluoroetherate, followed by hydrolysis (114). The preformed dithiolanium tetrafluoroborate also undergoes Friedel-Crafts reaction with aromatics such as dim ethyl am in oben 2en e and indole (115), and was used to generate dithiolanium derivatives (formyl precursors) from the enoltrimethylsilyl ether derivatives (116). 

Cosurfactant requirements can be minimized usiag a surfactant having a short-branched hydrophobe or a branched-alkyl substituent on an aromatic group (232,234) and a long ethoxy group chain (234). Blends of surfactants optimized for seawater or reservoir brine salinity include linear alkyl xylene sulfonate—alcohol ether sulfate mixtures (235). 

The need for pyrazoles substituted with the trifluoroacetyl group led to the reaction of ethoxyvinyl ether with trifluoroacetic anhydride, yielding 4-ethoxy-l,l,l-trifluoro-3-buten-2-one (38) this further reacted with aldehyde / fZ-butyUiydrazones, and after cyclization at room temperature under mildly acidic conditions the pyrazoles were obtained in satisfactory yields (eq. 7). Further treatment with H2SO4 removed the tert-huty group, thus providing an opportunity for further derivatization at N. ... 

NBS, CH3CN, H2O, 62-90% yield.The POM group has been selectively removed in the presence of an ethoxy ethyl ether, TBDMS ether, benzyl ether, p-methoxybenzyl ether, an acetate, and an allyl ether. Because the hydrolysis of a pentenyl 2-acetoxyglycoside was so much slower than a pentenyl 2-benzyloxyglycoside, the 2-benzyl derivative could be cleaved selectively in the presence of the 2-acetoxy derivative. The POM group is stable to 75% AcOH, but is cleaved by 5% HCl. 

Chemical Designations - Synonyms Carbitol Diethylene Glycol Ethyl Ether Dowanol DE 2-(2-Ethoxyethoxy)ethanol Ethoxy Diglycol Poly-Solv DE Chemical Formula CH3CH2OCH3CH3OCH3CH2OH. 

Craig s synthesis of nicotine (V to VII, p. 42) proceeds via nomicotine. Nicotinic acid nitrile reacts with the Grignard reagent derived from ethyl y-bromopropyl ether to give 3-pyridyl-y-ethoxypropyl ketone (V). This yields an oily oxime (VI) reducible to a-(3-pyridyl)-a-amino-8-ethoxy-w-butane (VII), which with 48 per cent, hydrobromic acid at 130-3° gives womicotine, and this on methylation yields dZ-nicotine. 

In a similar attempt, Decker and Eichler reduced A -methylnor-papaverinium phenolbetaine (VIII) with tin and hydrochloric acid and obtained i/i-laudanine, m.p. 112°, pierate, m.p. 162-3°, which was subsequently investigated by Spath and Epstein, who showed that on methylation it furnished dMaudanosine and that the ethyl ether on energetic oxidation yielded veratric acid (3 4-dimethoxybenzoic acid) and the methyl ethyl ether of nor-m-hemipinic acid. This clearly indicated that the free hydroxyl group was in the woquinoline nucleus, and its position was determined by the fact that on mild oxidation 7-methoxy-6-ethoxy-l-keto-2-methyl-l 2 3 4-tetrahydrowoquinoline, m.p. 95-6°, was produced, and on this basis these authors assigned formula (IX R = H R = CH3) to -laudanine. 

Sbisido (1938) bas confirmed tbe identity of tbe syntbetie and natural alkaloids, by showing that the two methyl ethers on degradation by tbe Hofmann process yield 5 6-dimethoxy-2 3-methylenedioxy-8-vinylphenanthrene, m.p. 142-3°, and the two ethyl ethers the analogous product with ethoxy- replacing the methoxyl group at C . 

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