Sec-Butanol

SEC-BUTANOL 273-453 -2.8814E+02 -9 S651C 02 -1. 9165C-01 5.9205E 01 8. 3282E-05... 

Extraction of sec-butanol from isobutene Hydrothermal oxidation of organic wastes in water... 

In the last few years, Idemitsu commercialized a 5000 metric ton/year integrated reaction and separation process in SCR isobutene, as shown in Rig. 22-24. The reaction of isobutene and water takes place in the water phase and is acid catalyzed. The product, sec-butanol, is extracted into the isobutene phase to drive the reversible reaction to the right. The. s c-butanol is then recovered from the isobutene by depressurizing the SCR phase, and the isobutene is recompressed and recycled. 

The sulfation reaction occurs in the liquid phase at approximately 35 °C. An 85 wt% alcohol yield could be realized. The reaction is similar to the sulfation of ethylene or propylene and results in a mixture of sec-butyl hydrogen sulfate and di-sec-butyl sulfate. The mixture is further hydrolyzed to sec-butanol and sulfuric acid ... 

The major use of sec-butanol is to produce MEK by dehydrogenation, as mentioned earlier. 2-Butanol is also used as a solvent, a paint remover, and an intermediate in organic synthesis. 

The various thermal techniques give different results. Snee (1991) determined the heat of the esterification reaction between sec-butanol and propionic aldehyde using different thermal techniques. 

Mixtures of 2-butanol (.sec-butanol) and water form two-liquid phases. Vapor-liquid equilibrium and liquid-liquid equilibrium for the 2-butanol-water system can be predicted by the NRTL equation. Vapor pressure coefficients for the... 

This paper describes our efforts to synthesize a series of thermally stable sulfonated resins and to evaluate their activity in a model reaction of 1-butene hydration to sec-butanol. 

The initial screening of the resin catalysts was done in a batch reactor at supercritical for butene-1 conditions of temperature 155 °C, pressure of 1000 psig and at molar ratio of 1-butene water of 5.5. The reaction was stopped after predetermined period of time and the products analyzed. It was found that under the standard reaction conditions, for all of the catalysts studied, a constant concentration in the sec-butanol concentration was achieved within a 1-2 hour reaction time. Using only the linear section of the concentration-time plot, the one hour result was used to evaluate the catalyst activity, which was normalized as mmol of SBA/ per proton/ per hour (a), as mmol of product/ per gram of dry catalyst/ per hour (b) and mmol of product/ per ml of wet catalyst/ per hour (c). 

Fig. 19. Linearized initial rate plots for sec-butanol dehydration, Eqs. (80) and (81).

Synonyms Acetic acid, 2-butoxy ester Acetic acid, sec-butyl ester Acetic acid, 1-methylpropyl ester BRN 1720689 2-BuAc sec-BuAc 2-Butanol acetate sec-Butanol acetate 2-Butanol ethanoate 2-Butyl acetate sec-Butyl alcohol acetate sec-Butyl ethanoate EINECS 203-300-1 Ethanoic acid, 1-methylpropyl ester 1-Methylpropyl acetate 1-Methylpropyl ethanoate NSC 8034 UN 1123. 

Butanol, see sec-Butyl alcohol n-Butanol, see 1-Butanol n-Butan-l-ol, see 1-Butanol s-Butanol, see sec-Butyl alcohol sec-Butanol, see sec-Butyl alcohol f-Butanol, see ferf-Butyl alcohol ferf-Butanol, see ferf-Butyl alcohol Butan-l-ol, see 1-Butanol Butan-2-ol, see sec-Butyl alcohol... 

Butanol acetate, see sec-Butyl acetate sec-Butanol acetate, see sec-Butyl acetate... 

A significant improvement in the method was developed by Nitecki et al. (68JOC864). In this process, A-l-butyloxycarbonyl derivatives of dipeptide esters are deblocked by formic acid (room temperature, 2 h) and the excess formic acid is distilled off. The formate salt of the dipeptide ester left behind is heated with sec-butanol and toluene for 2-3 h under azeotropic distillation conditions to form the cyclodipeptide. The yields... 

The ring closure of aminoalkynes bearing a leaving group in the appropriate position might lead to the formation of pyrroles in an addition-elimination sequence. 2-Phcnylcthynyl-1 -amino-sec-butanol. for example, gave 4-ethyl-2-phenylpyrrole on treatment with palladium dichloride in acetonitrile in excellent yield (3.46.),57... 

Mcthylethyl ketone (MKK> is mainly produced Jmm sec butanol and butylene It is used as a solvent in vinyl and acrylic coatings, nitrocellulose liquors, amt udbestves. 

The degree of asymmetric induction is dependent on the structure of the alcohol (see Table I). In the absence of solvent, asymmetric induction seems to increase as the bulkiness of the alcohol increases in benzene the same appears to be true for acyclic alcohols. In both cases sec -butanol does not follow the general trend. This is rather surprising considering that no enantiomer differentiation of this alcohol takes place under the reaction conditions that are used. 

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