Ethyl sec-butyl ether

Ethers. Low yields of several compounds were obtained when ethvl ether was heated at 130-140 under ethylene pressure in the presence of di-t-butyl peroxide and hydrochloric acid (Expt. 26, Table V). Ethylation took place in the normal fashion to yield ethyl sec-butyl ether by monoethylation together with at least three ethers having eight carbon atoms di-sec-butyl ether, (ethylation at both secondary carbon atoms of the ethyl ether), ethyl 1-methyl-l-ethylpropyl ether (ethylation at the tertiary carbon atom of the primary product) and ethyl-1-methylpentyl ether formed by telomerization of the primary radical with two molecules of ethylene). Some Cio ethers were also formed. 

C6H140 ethyl sec-butyl ether 2679-87-0 164.11 8.961 2 9135 C6H15AI triethyl aluminum 97-93-8 220.65 10.600 1... 

Selectivity to ETBE is usually very high and the main side reactions are isobutene dimerization with formation of 2,4,4-trimethyl-l-pentene and 2,4,4-trimethyl-2-pentene (DIB), ethanol self-condensation to diethyl ether (DEE), water addition to isobutene with formation of tert-butyl alcohol (TBA) and the etherification of linear butenes, if present, to produce ethyl sec-butyl ether (ESBE). 

METHYL sec-BUTYL ETHER METHYL tert-BUTYL ETHER METHYL ISOBUTYL ETHER ETHYL PROPYL ETHER ETHYLENE GLYCOL MONOPROPYL NEOPENTYL GLYCOL... 

TRIMETHYLPENTANE 2,2,3,3-TETRAMETHYLBUTANE DI-n-BUTYL ETHER DI-sec-BUTYL ETHER DI-tert-BUTYL ETHER 2-ETHYL-1-HEXANOL... 

TETRA-METHYLBUTANE BUTYL-ETHER SEC-BUTYL-ETHER TERT-BUTYL-ETHER OCTYL-ALCOHOL BUTYL-SULFIDE ETHYL-HEXYL-SULFIDE... 

Figure 7 Colour plot of a GCxGC separation of reformulated gasoline [35]. Ol. methanol, 02. ethanol, 03. isoproyl alcohol, 04. tert-butanol, 05. n-propanol, 06. sec-butanol, 07. iso butanol, 08. tert-pentanol, 09. n-butanol, OlO. methyl tert-butyl ether. Oil. diisopropyl ether, 012. ethyl tert-butyl ether, 013. tcrt-amyl methyl ether, Nl. cyclo hexane, N2. methylcyclo hexane, IS. 1,2-dimethoxy ethane as internal standard.

Precision—The precision of these test methods was determined by statistic analysis of interlaboratory test results. Twelve laboratories analyzed in duplicate eight different samples, providing a total of thirteen data sets. One laboratory us two different test methods. The breakdown on data sets by test method is Test Method A, three Test Method B, two Test Method C, three Test Me od D, five. The statistical analysis was performed on the set of 13 data sets because the reductive pyrolysis technique is common to all four test methods. Separate statistics were not determined for individual test methods. The sample set included anhydrous methanol and gasoline stocks that were spiked with one or more of the following isobutanol, n-butanol, sec-butanol, tfrt-butanol, di-isopropyl ether, ethanol, ethyl ten-butyl ether, methanol, methyl rm-butyl ether, n-propanol, isopropanol, tert-amyl methyl ether. 

Mass Spectrometry Ethers like alcohols lose an alkyl radical from their molecular ion to give an oxygen stabilized cation Thus m/z 73 and m/z 87 are both more abun dant than the molecular ion m the mass spectrum of sec butyl ethyl ether... 

There is another oxygen-stabilized cation of mIz 87 capable of being formed by fragmentation of the molecular ion in the mass spectrum of sec-butyl ethyl ether. Suggest a reasonable structure for this ion. 

Glyoxal-sodium bisulfite, 30, 86 Glyoxylic acid, w-butyl ester, 35, 18 ethyl ester, diethyl acetal, 35, 59 Grignard reaction, addition to ethyl sec-butylidenecyanoacetate, 35, 7 allylmagnesium bromide with of,(3-di-bromoethyl ethyl ether, 36, 61 allylmagnesium chloride with a,/3-di-bromoethyl ethyl ether, 36, 63 ethylmagnesium bromide with tin tetrachloride, 36, 86... 

Acetamido-4-amino-6-chloro-s-triazine, see Atrazine Acetanilide, see Aniline, Chlorobenzene, Vinclozolin Acetic acid, see Acenaphthene, Acetaldehyde, Acetic anhydride. Acetone, Acetonitrile, Acrolein, Acrylonitrile, Aldicarb. Amyl acetate, sec-Amyl acetate, Bis(2-ethylhexyl) phthalate. Butyl acetate, sec-Butyl acetate, ferf-Butyl acetate, 2-Chlorophenol, Diazinon. 2,4-Dimethylphenol, 2,4-Dinitrophenol, 2,4-Dinitrotoluene, 1,4-Dioxane, 1,2-Diphenylhydrazine, Esfenvalerate. Ethyl acetate, Flucvthrinate. Formic acid, sec-Hexyl acetate. Isopropyl acetate, Isoamyl acetate. Isobutyl acetate, Methanol. Methyl acetate. 2-Methvl-2-butene. Methyl ferf-butvl ether. Methyl cellosolve acetate. 2-Methvlphenol. Methomvl. 4-Nitrophenol, Pentachlorophenol, Phenol. Propyl acetate. 1,1,1-Trichloroethane, Vinyl acetate. Vinyl chloride Acetoacetic acid, see Mevinphos Acetone, see Acrolein. Acrylonitrile. Atrazine. Butane. 

Ester Content (as Ethyl Acetate) — min 85 0 max 88.0%. It shall be detd in accordance with ASTM D1617-69, described in Annual Book of ASTM Standards, Part 20(1972), 736-39 Note 1 The method described in ASTM D1617— 69 applies not only to EtAcet, but also to other esters, such as N-butyl acetate, isopropyl acetate, acetate ester of ethylene glycol monoethyl ether, sec-butyl acetate, amyl acetate, dibutyl phthalate and iso butyl acetate... 

Acetic Acid, Cupric Salt Acetic Acid, Dimethylamide Acetic Acid, Ethyl Ester Acetic Acid, Isobutyl Ester Acetic Acid, Isopropyl Ester Acetic Acid, Methyl Ester Acetic Acid, Nickel (II) Salt Acetic Acid, Propyl Ester Acetic Acid, Sec-Butyl Ester Acetic Acid, Zinc Salt Acetic Aldehyde Acetic Anhydride Acetic Ester Acetic Ether... 

More recent was the demonstration of the enzymatic resolution of sec-butylamine (22), which is an important intermediate for a number of drug compounds for Bristol Myers Squibb [31]. (S)-sec-butylamine (23) ofhigh selectivity (99.5% ) was obtained by C. antarctica lipase-catalyzed acylation with ethyl decanoate in methyl tert-butyl ether (Scheme 7.12). Initial studies using ethyl or vinyl butyrate gave poor selectivity. This was due to the low stereodifferentiation between the two... 

MEK/sec.-butyl alcohol (25/75) primarily used for the analysis of moisture, ethyl alcohol, and diethyl ether in single-base propellants containing nitrocellulose of approximately 13.15% nitrogen. 

Condition A Air, water, ethyl alcohol, impurity from extraction solvent (observed when the gas chromatograph is set at high sensitivity), diethyl ether, and extraction solvent (MEK/sec.-butyl alcohol). See Fig. 1, If acetone is present, it will elude at approximately the same retention time as the impurity from the extraction solvent. 

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