Isoamylene oxide

Key Words Ethylene oxide, Propylene oxide. Epoxybutene, Market, Isoamylene oxide. Cyclohexene oxide. Styrene oxide, Norbornene oxide. Epichlorohydrin, Epoxy resins, Carbamazepine, Terpenes, Limonene, a-Pinene, Fatty acid epoxides, Allyl epoxides, Sharpless epoxidation. Turnover frequency, Space time yield. Hydrogen peroxide, Polyoxometallates, Phase-transfer reagents, Methyltrioxorhenium (MTO), Fluorinated acetone, Alkylmetaborate esters. Alumina, Iminium salts, Porphyrins, Jacobsen-Katsuki oxidation, Salen, Peroxoacetic acid, P450 BM-3, Escherichia coli, lodosylbenzene, Oxometallacycle, DFT, Lewis acid mechanism, Metalladioxolane, Mimoun complex, Sheldon complex, Michaelis-Menten, Schiff bases. Redox mechanism. Oxygen-rebound mechanism, Spiro structure. 2008 Elsevier B.V. 

Isoamylene oxide added dropwise with stirring at —10 to —12° to ethyl-MgBr, from Mg and ethyl bromide in ether, allowed to stand 48 hrs., and evaporated, whereby a violent reaction occurs towards the end — propylisopropylcarbinol. Y 63%. (F. e. with lower yields s. M.S. Malinovskii and B. N. Konevichev, >K 18, 1833 (1948) C. A. 43, 3776 d.)... 

Indenopyrene, see Indeno[l,2,3-crf pyrene l//-Indole, see Indole Indolene, see Indoline Inexit, see Lindane Inhibisol, see 1,1,1-Trichloroethane Insecticide 497, see Dieldrin Insecticide 4049, see Malathion Insectophene, see a-Endosulfan, p-Endosulfan Intox 8, see Chlordane Inverton 245, see 2,4,5-T lodomethane, see Methyl iodide IP, see Indeno[l,2,3-crf pyrene IP3, see Isoamyl alcohol Ipaner, see 2,4-D IPE, see Isopropyl ether IPH, see Phenol Ipersan, see Trifluralin Iphanon, see Camphor Isceon 11, see Trichlorofluoromethane Isceon 122, see Dichlorodifluoromethane Iscobrome, see Methyl bromide Iscobrome D, see Ethylene dibromide Isoacetophorone, see Isophorone a-Isoamylene, see 3-Methyl-l-butene Isoamyl ethanoate, see Isoamyl acetate Isoamylhydride, see 2-Methylbutane Isoamylol, see Isoamyl alcohol Isobac, see 2,4-Dichlorophenol Isobenzofuran-l,3-dione, see Phthalic anhydride 1,3-Isobenzofurandione, see Phthalic anhydride IsoBuAc, see Isobutyl acetate IsoBuBz, see Isobutylbenzene Isobutane, see 2-Methylpropane Isobutanol, see Isobutyl alcohol Isobutene, see 2-Methylpropene Isobutenyl methyl ketone, see Mesityl oxide Isobutyl carbinol, see Isoamyl alcohol Isobutylene, see 2-Methylpropene Isobutylethylene, see 4-Methyl-l-pentene Isobutyl ketone, see Diisobutyl ketone Isobutyl methyl ketone, see 4-Methyl-2-pentanone Isobutyltrimethylmethane, see 2,2,4-Trimethylpentane Isocumene, see Propylbenzene Isocyanatomethane, see Methyl isocyanate Isocyanic acid, methyl ester, see Methyl isocyanate Isocyanic acid, methylphenylene ester, see 2,4-Toluene-diisocyanate... 

In summary, peracetic acid in aqueous solution is an efficient reagent for the epoxidation of a variety of substrates, however, it should be used relatively quickly after its preparation. Sensitive substrates like isoamylene also require a buffer such as sodium hydrogen carbonate to affect high yield of the epoxide. Solvent extraction of an appropriate source of a peracid can lead to organic solutions of the oxidation species. Such methods have been available for many years,43 however, very few are amenable to more than a small scale operation. 

Hydrogenation of furan, 2,3-dihy-drofuran, silvan, and furfural Methanol steam reforming Coupling of dehydrogenation of isoamylenes and hydrodemethyN ation of toluene or oxidation of hydrogen ... 

Cumene is prepared on a large scale from benzene and propylene as an intermediate in the synthesis of acetone and phenol. This makes it an inexpensive and readily available starting material for the production of Galaxolide . Three further electrophilic addition reactions complete the synthesis. Firstly, isoamylene is added, to form pentamethylindane, to which propylene oxide is added. Finally, treatment with formaldehyde leads, via the hemiacetal, to the isochroman. 

A somewhat different application of perovskites is the oxidative dehydrogenation of olefins. Kehl et al. (202) reported that Lao.8Cro.65Feo.55Ch can be used for butene dehydrogenation to butadiene and also for the conversion of other monoolefins containing at least four C atoms, such as the production of isoprene from isoamylenes. 

Various industrial companies have developed a metathesis process for the production of 2-methylbut-2-ene (isoamylene), which can be used to make isoprene via oxidative dehydrogenation. It is produced via cross-metathesis of isobutene and but-2-ene reaction (8). Cross-metathesis can also be carried out with propene instead of but-2-ene, or a mixture of the two. 

Various industrial companies have developed a process for the production of isoamylene (2-methyl but-2-ene), which is a precursor of isoprene (obtained by oxidative dehydrogenation). It can be produced by cross-metathesis of isobutene with but-2-ene or propene ... 

Isoamyl acetate see 3-Methylbutyl ethanoate Isoamyl alcohol see 3-Methylbutan-l-ol heta.-Isoamylene see 2-Methylbut-2-ene Isohutane see 2-Methylpropane Isohutanoic acid see 2-Methylpropanoic acid Isohutanol see 2-Methylpropan-l-ol Isobutene see 2-Methylpropene Isobutyl acetate see 2-Methylpropyl ethanoate Isobutyl alcohol see 2-Methylpropan-l-ol Isobutylbenzene see (2-Methylpropyl)benzene Isobutyl chloride see l-Chloro-2-methylpropane Isobutylene see 2-Methylpropene Isobutylene oxide see 2,2-Dimethyloxirane Isobutyl ethanoate see 2-Methylpropyl ethanoate Isobutyl methyl ketone see 4-Methylpentan-2-one Isobutyraldehyde see 2-Methylpropanal Isobutyric acid see 2-Methylpropanoic acid Isocyanic acid butyl ester see Butyl isocyanate Isohexane see 2-Methylpentane Isooctane see 2,2,4-Tiimethylpentane Isopentane see 2-Methylbutane Isopentanol see 3-Methylbutan-l-ol Isopentyl alcohol see 3-Methylbutan-l-ol Isoprene see 2-Methylbuta-l,3-diene Isopropanol see Propan-2-ol Isopropenylbenzene... 

Description of Sample The sample of spectrum 16-A was obtained as a low-boiling liquid by-product, IV (11% yield), of the pyrolysis of methyl w-propyl isoamyl amine oxide (I). Other products from the pyrolysis were propylene (II) and isoamylene (III). Molecular weight data obtained on the unknown gave a value of 70, which among other things indicated that the sample was unlikely to contain nitrogen. 

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