Ethyl-2-methylpropane

Copolymers of sodium acrylate with sodium 2-acrylamido-2-methylpropane sulfonate (AMPS) or /V, /V- dim ethyl acryl am i de (52) have been used to prepare cross-linked systems at high temperatures and salinity. Chromium cross-linked gels, prepared from a 3 1 blend of partially hydrolyzed... 

Reaction of the corresponding lithiated 2-ethyl-4,5-dihydrooxazole 8 with 2-methylpropanal affords a 82 18 mixture of the anti- and. yw-adducts from which 75% of the pure (Y S,2 S)-anti-enantiomer can be isolated by chromatography19. 

Enhanced anti selectivity is observed in reactions of lithiated 4.5-dihydrooxazoles bearing an additional substituent which facilitates the formation of rigid azaenolates by internal chelation of lithium13. Thus, reaction of 2-ethyl-4,5-dihydro-4,4-dimethyloxazole (10) with 2-methylpropanal gives a 56 44 mixture of adducts while (R)-2-ethyl-4,5-dihydro-4-(methoxymethyl)-oxazolc (12) reacts with the same aldehyde to yield a 90 10 mixture of adducts 1313. 

N-vinyl acetamide, or dimethylamino ethyl methacrylate, 2-acrylamido-2-methylpropane sulfonic acid, sodium vinyl sulfonate, and vinylbenzene sulfonate... 

Lignin, brown coal polymer of methacrylic acid, methacrylamide, hydroxyethyl acrylate, hydroxypropyl acrylate, vinyl acetate, methyl vinyl ether, ethyl vinyl ether, N-methylmeth-acrylamide, N,N-dimethylmethacrylamide, vinyl sulfonate, or 2-acrylamido-N-methylpropane sulfonic acid free radical polymerization of a water-soluble vinyl monomer in an aqueous suspension of coals [705,1847]... 

Diethyl ether, methyl n-propyl ether, diethylamine, N-methyl-1 -propanamine, acetone, allyl alcohol, dimethylformamide, propanamide, 2-methylpropan-amide, 2,2-dimethylpropanamide, benzamide, dichloromethane, toluene, ethyl N-acetyl-glycinate, -alaninate, -methioninate, and -aspartate, ethyl acetate, tetrahydrofuran... 

N-(2- [Ethoxy(methyl)phosphoryl]sulfanyl ethyl)-IV-isopropyl-N-methylpropan-2-aminium Iodide N-(2- [Ethoxy(methyl)phosphoryl]sulfanyl ethyl)-IV-isopropylpropan-2-aminium Chloride N-(2-Chloroethyl)dimethylamine N-(2-Chloroethyl)-N,N-dimethylamine N-(2-Hydroxyethyl)diethylamine N-(4-Oxy-3-methoxybenzyl)-8-methyl-6-nonenamide N-(Diethylamino)ethanol N-(Isopropyl)-2-propamine... 

Carbon tetrachloride, 0322 Carbon tetrafluoride, 0349 Carbon tetraiodide, 0525 f 1-Chlorobutane, 1637 f 2-Chlorobutane, 1638 f Chlorocyclopentane, 1923 f l-Chloro-l,l-dilluoroethane, 0731 Chlorodilluoromethane, 0369 f Chloroethane, 0848 Chloroform, 0372 f Chloromethane, 0432 f l-Chloro-3-methylbutane, 1986 f 2-Chloro-2-methylbutane, 1987 f Chloromethyl ethyl ether, 1246 f Chloromethyl methyl ether, 0850 f l-Chloro-2-methylpropane, 1639 f 2-Chloro-2-methylpropane, 1640 f 1-Chloropentane, 1988 f 1-Chloropropane, 1243 f 2-Chloropropane, 1244 f l-Chloro-3,3,3-trifluoropropane, 1127 1,2-Dibromoethane, 0785 Dibromomethane, 0395... 

The crude residue was purified by silica gel column chromatography (160 g). Elution with hexane/ethyl acetate (4 1, 750 mL) gave (7 )-3-benzyloxy-2-methylpropane-... 

UN 1897, see Tetrachloroethylene UN 1915, see Cyclohexanone UN 1916, see Bis(2-chloroethoxy)methane. Bis(2-chloroethyl) ether UN 1917, see Ethyl acrylate UN 1918, see Isopropylbenzene UN 1919, see Methyl acrylate UN 1920, see Nonane UN 1941, see Dibromodiflnoromethane UN 1969, see 2-Methylpropane UN 1978, see Propane UN 1991, see Chloroprene UN 1992, see 2-Chloroethyl vinyl ether UN 1993, see 2,3-Dimethylpentane, 3,3-Dimethylpentane, 4 Ethylmorpholine, 2-Ethylthiophene, Indan, Isobutylbenzene, 2-Methylhexane, 3-Methylhexane, 2-Methyl 1 pentene, 4-Methyl-l-pentene, 1,4-Pentadiene, cis 2 Pentene, frans-2-Pentene, 1,2,4-Trimethylbenzene UN 2018, see 4-Chloroaniline UN 2019, see 4-Chloroaniline... 

Chloroethane, Chloroform, Diethyl phthalate. Ethyl acetate. Ethyl acrylate. Ethyl bromide. Ethyl ether. Ethyl formate. Formaldehyde, Methoxychlor, Nitromethane, Parathion, Phorate. Ouizalofop-ethvl Ethanolamine, see Ethylenimine, Morpholine Ethoxyacetaldehyde, see 2-Ethoxyethanol 2-Ethoxy-2-methylpropanal, see Ethyl tert-butvl ether Ethylacetamide, see Dimethylamine, Triethylamine Ethyl acetate, see Nitromethane, Tetrachloroethylene... 

CASRN 637-92-3 molecular formula CeH O FW 102.17 Chemical/Physical The atmospheric oxidation of ethyl ferf-butyl ether by OH radicals in the presence of nitric oxide yielded ferf-butyl formate as the major product. Minor products included formaldehyde and nitrogen dioxide. In the absence of nitric oxide, 2-ethoxy-2-methylpropanal is likely to form (Wallington and Japar, 1991). 

Fuangfoo, S., Kersting, M., and Viswanath, D.S. Isothermal vapor-liquid equilibria for methyl-2,2-dimethylethyl ether + 2-methylpropan-2-ol, diethyl ether -t ethyl-2,2-dimethylethyl ether. 2-methyl-2-buteue+ (2-methylbutan-2-ol), and diisopropyl ether -t octane, J. Chem. Eng. Data, 44(3) 405-410, 1999. 

Kwon and coworkers described solid polyelectrolyte complex systems which dissolve rapidly in response to small electric currents. The solid doses were based on poly(ethyl oxazoline) and poly(methacrylic acid) with a repeating unit stoichiometry of 1 1. Insulin was released in response to slight electric currents due to electrically induced polymer dissolution [380]. In similar work Kwon and coworkers [381] studied release of edrophonium chloride and hydrocortisone from poly(2-acrylamido-2-methylpropane sulfonate-co-n-butyl methacrylate). An on/oflf mechanism of the edrophonium chloride release was observed and was attributed to ion exchange of solute and hydroxonium ion. The cationic solute release was assisted by electrostatic forces, whereas release of the neutral hydrocortisone solute was only affected by swelling and deswelling. 

Figure 4. Profiles of volatiles for high-quality peanuts, raw and roasted (1) ethanol (2) pentane (3) 2-propanol (4) acetone (5) methylene chloride (6) methyl acetate (7) 2-methylpropanal (8) diacetyl (9) 3-methylbutanal (10) 2-methyl-butanal (11) 2,3-pentanedione (12) S-methylpyrrole (13) toluene (14) hexanal (15) 2-methylpyrazine (16) xylene (17) 2-heptanone (18) 2,5-dimethylpyrazine (19) 2-pentylfuran (20) 2-ethyl-5-methylpyrazine (21) 2-ethyl-3,6-dimethylpyra-zine (22) phenylacetaldehyde.

A tertiary radical can be formed by elimination during AF of ter/-butyl methyl and ethyl ethers thus, isolation of the respective perfluoro-/erf-butyl ethers, e.g. 1, occurs in only 36 and 42% yield.28 Significant quantities of perfluoro(2-methylpropane) (2) are also isolated. The longer alkyl chains (ethyl and larger) appear to be slightly less prone to scission than the methyl group. Apparently, carbonyl fluoride is more readily eliminated than trifluoroacetyl fluoride, a phenomenon observed during AF of esters.29 Elimination becomes most serious in the special class of polyethers called ortho esters, e.g. 3-5.30 Cyclic ortho esters, acetals and ketals are much less affected than acyclics. 

Iodoform [75-47-8] M 393.7, m 119°. Crystd from MeOH, EtOH or EtOH/ethyl acetate. l-Iodo-2-methylpropane see isobutyl iodide. 

CjHsO Ethyl alcohol 78.3 CsHuOSi methylpropane Ethoxytri- 75-76 C H Benzene 80.2 Minimum b.p. 86... 

Alcoholysis of ester and epoxide with various basic catalysts including alkaline earth metal oxides and hydroxides was reported recently by Hattori et alF61 Various alcohols were transesterified with ethyl acetate at 273 K. The results show that in the presence of strongly basic catalysts such as CaO, SrO and BaO, propan-2-ol reacted much faster than methanol, whereas in the presence of more weakly basic catalysts such as MgO, Sr(0H)2-8H20 and Ba(0H)28H20, methanol reacted faster than propan-2-ol. When the alcoholysis was performed with propene oxide, alkaline earth metal oxides were found to be more reactive than hydroxides the reactivity of the alcohols was in the order methanol > ethanol > propan-2-ol > 2-methylpropan-2-ol, regardless of the type of catalyst. 

More than 300 compounds had been identified in cocoa volatiles, 10% of which were carbonyl compounds (59,60). Acetaldehyde, 2-methylpropanal, 3-methylbutanal, 2-methylbutanal, phenylacetaldhyde and propanal were products of Strecker degradation of alanine, valine, leucine, isoleucine, phenyl-acetaldehyde, and a-aminobutyric acid, respectively. Eckey (61) reported that raw cocoa beans contain about 50-55% fats, which consisted of palmitic (26.2%), stearic (34.4%), oleic (37.3%), and linoleic (2.1%) acids. During roasting cocoa beans these acids were oxidized and the following carbonyl compounds might be produced - oleic 2-propenal, butanal, valeraldehyde, hexanal, heptanal, octanal, nonanal, decanal, and 2-alkenals of Cg to C-q. Linoleic ethanal, propanal, pentanal, hexanal, 2-alkenals of to C q, 2,4-alkadienals of Cg to C-q, methyl ethyl ketone and hexen-1,6-dial. Carbonyl compounds play a major role in the formation of cocoa flavor components. 

Ethyl-/3-methylglutaric acid has been prepared by the acid hydrolysis of a,a -dicyano- S-ethyl-fl-methylglutarimide, 3-cy-ano-4-ethyl-6-imino-2-keto-4-methylpiperidine-5-carboxamide or the diimide of 8-ethyl- 9-methylpropane-a,a,a, a -tetracarboxylic acid by the oxidation of jS-ethyl-fl-methyl-5-valerolactone with chromic acid and by the reaction of sodium hypobromite on l,4-dimethyl-l-ethyl-3,S-cyclohexanedione. ... 

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