1- Methoxy-2-methylpropane

Cation-exchange resins are used as catalysts in the produdion of MTBE (methyl tertiary-butyl ether, 2-methoxy-2-methylpropane) and various other oxygenates and, lately, also in the dimerization of isobutene [30]. Other commercial applications of the cation-exchange resins indude dehydration of alcohols, alkylation of phenols, condensation readions, alkene hydration, purification of phenol, ester hydrolysis and other reactions [31]. The major producers of ion-exchange resins are Sybron Chemicals Incorporated [32] (Lewatit resins), Dow Chemical Company [33] (DOWEX resins), Purolite [28] (Purolite resins), and Rohm and Haas Company [27] (Amberlyst resins). 

SYNS 2-METHOXY-2-METHYLPROPANE METHYL 1,1-DIMETHYLETHYL ETHER METHYL tert-BUTYL ETHER (DOT) MTBE PROPANE, 2-METHOXY-2-METHYL- (9CI)... 

In a second investigation, racemic 2-hydroxy-4-phenylbutanoic acid (42) was reacted with lipase PS (LPS) and vinyl acetate (VA) (ethenyl ethanoate) in /-butyl methyl ether (2-methoxy-2-methylpropane) to give acetate (S)-43 in 35% yield and in 99% ee unreacted alcohol 44 was found to have 99% ee with R configuration predominant (Scheme 3.3). 

B.39) Propane, 2-methoxy-2-methyl-, 2-methoxy-2-methylpropane, tert-butyl methyl ether, 1,1-dimethylethyl methyl ether [1634-04-4]... 

The mass spectra of 1-methoxybutane, 2-methoxybutane, and 2-methoxy-2-methylpropane are shown in Figure 13.7. Match the compounds with the spectra. 

Synonyms t-Butyl methyl ether 2-Methoxy-2-methylpropane Methyl 1,1-dimethylethyl ether Methyl tertiary butyl ether MTBE Propane, 2-methoxy-2-methyl-CiassiTication Aliphatic ether Empirical CjFlijO Formula CFl30C(CFl3)3... 

An S l reaction is illustrated by the solvolysis reaction of 2-bromo-2-methylpropane (fert-butyl bromide) in methanol to form 2-methoxy-2-methylpropane terthutyl methyl ether). You may notice that the second step of the mechanism is identical to the second step of the mechanism for the addition of hydrogen hahdes (H—X) to alkenes (Section 5.3A) and the acid-catalyzed hydration of alkenes (Section 5.3B). 

Methoxy-2-methylpropane (methyl terFbutyl ether, MTBE)... 

Hiaki, T. Tatsuhana, K. Tsuji, T. Hon, M. Vapor-hquid equihbria for binary and ternary systems composed of 2-methoxy-2-methylpropane, 2-methyl-2-propanol, and octane at 101.3 iiPa Fluid Phase Equilib. 1999,156, 161-171... 

H 1 H Ethoxyethane (Diethyl ether) (lJi,2i )-2-Ethoxycyclohexanol (tert-Butyl methyl ether)... 

Alkoxy-2-amino-3-butenoic acid derivatives are of substantial interest, for they are potentially useful as inhibitors of important enzymes. During their syntheses, some isocyanides, such as l-benzyloxy-3-isocyano-2-methoxypropane, l-isocyano-2-methoxy-3-phenoxypropane, l-benzyloxy-3-isocyano-2-methoxy-2-methylpropane, and 2-benzyloxymethyl-l-isocyano-2-methoxybutane are necessary, which are prepared by dehydration of the corresponding formamides with phos-phoryl chloride [1211]. 

C5H12O 1634-04-4 tert-Butyl methyl ether syn. nMTBE 2-Methoxy-2-methylpropane... 

Francesconi, R. Arcelll, A. Comelll, F. Excess properties of binary mixtures containing 2-methoxy-2-methylpropane (MTBE) and alkyl alkanoates at 298.15 K J. Chem. Eng. Data 1998,43, 329-332... 

Two simple organic molecules that have been nsed as fuel additives are methanol (CH3OH) and 2-methoxy-2-methylpropane [ierf-butyl methyl ether, (CH3)3COCH3]. The A/f ,b values for these compounds in the gas phase are —182.6 kcal mol for methanol and -809.7 kcal moF for 2-methoxy-2-methylpro-pane. (a) Write balanced equations for the complete combustion of each of these molecules to CO2 and H2O. (b) Using Table 3-7, compare the A// o ,, values for these compounds with those for alkanes with similar molecular weights. 

When 2-bromo-2-methylpropane is dissolved in methanol, it disappears rapidly. As expected, the major product, 2-methoxy-2-methylpropane, arises by solvolysis. However, there is also a signihcant amount of another compound, 2-methylpropene, the product of elimination of HBr from the original substrate. Thus, in competition with the SnI process, which leads to displacement of the leaving group, another mechanism transforms the tertiary halide, giving rise to the alkene. What is this mechanism Is it related to the SnI reaction ... 

Arce, A. Martinez-Ageitos, J. Soto, A. VLE measurements of binary mixtures of methanol, edianoL 2-methoxy-2-methylpropane, and 2-meflioxy-2-methylbutane at 101.32 kPa. J. Chem. Eng. Data 1996,41, 718-723. 

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