Tert-Butyl isobutyl ketone

In radical reactions not involving bromine or chlorine on die substrate, rearrangements are much rarer One example is the fluorination of di-tert butyl ketone which produces perfluorinated tert-butyl isobutyl ketone [35] Although isolated yields are poor only the rearranged ketone could be isolated This is perhaps only the second example of a 1,2-acyl shift Low fluonne substrate ratios show that this rearrangement occurs after monofluonnation... 

By in situ MAS NMR spectroscopy, the Koch reaction was also observed upon co-adsorption of butyl alcohols (tert-butyl, isobutyl, and -butyl) and carbon monoxide or of olefins (Ao-butylene and 1-octene), carbon monoxide, and water on HZSM-5 (Ksi/ Ai — 49) under mild conditions (87,88). Under the same conditions, but in the absence of water (89), it was shown that ethylene, isobutylene, and 1-octene undergo the Friedel-Crafts acylation (90) to form unsaturated ketones and stable cyclic five-membered ring carboxonium ions instead of carboxylic acids. Carbonylation of benzene by the direct reaction of benzene and carbon monoxide on solid catalysts was reported by Clingenpeel et al. (91,92). By C MAS NMR spectroscopy, the formation of benzoic acid (178 ppm) and benzaldehyde (206 ppm) was observed on zeolite HY (91), AlC -doped HY (91), and sulfated zirconia (SZA) (92). 

METHYL ISOBUTYL KETONE n-PENTYL FORMATE n-BUTYL ACETATE sec-BUTYL ACETATE tert-BUTYL ACETATE ETHYL n-BUTYRATE ETHYL ISOBUTYRATE ISOBUTYL ACETATE n-PROPYL PROPIONATE CYCLOHEXYL PEROXIDE DIACETONE ALCOHOL 2-ETHYL BUTYRIC ACID n-HEXANOIC ACID 2-ETHOXYETHYL ACETATE HYDROXYCAPROIC ACID PARALDEHYDE... 

Butyl ether, see Dibutyl ether n-Butyl formate iso-Butyl formate Butyl hydroperoxide in heptane in hexane in pentane Butyl lactate Butyl mercaptan Butyl methacrylate Isobutyl methyl ketone tert-Butyl peracetate tert-Butyl perbenzoate Butyl peroxypivalate (in 75% sol. 

KH 50% n-Octone/50% m-Xylene lot a-Methylstyrene KH Methyl tert-Butyl Ketone tot p-Cymene loi Tetrohydrofuron o I Diisobutyl Ketone l—o I Ethylbenzene KH 60% n-Octone/20% m-Xylene I- o l Methyl Isobutyl Ketone 30h KH Toluene... 

In a series of further experiments, the photolysis of tert-butyl hydroperoxide and also the ds-polyisoprene hydroperoxide was studied in the presence of a variety of ketones. The results of the photodecomposition of tert-butyl hydroperoxide in hexane in the presence of methyl isobutyl-... 

Although not of much real preparative interest, radical decarbonylation has been observed with a large number of aldehydes and ketones at high temperatures and/or under ultraviolet irradiation or in the presence of peroxides. For example, carbon monoxide is eliminated in 90% yield when 3-methyl-3-phenylbutanal is heated for five hours at 130° in the presence of di-tert-butyl peroxide fractionation of the residue then affords 70% of a 1 1 mixture of terr-butyl- and isobutyl-benzene, so that the / ,/ -dimethyl-phenethyl radical formed on elimination of carbon monoxide from the C6H5C(CH3)2CH2CO— radical must be assumed to have partially rearranged.66... 

Methanol, ethylene glycol, toluene, xylene, and carbon disulfide occupy the highest places in Tables 14.32.1-14.32.3, followed by mefliyl ethyl ketone, dichloromethane, 1,1,1-trichloroethane, tert-butyl alcohol, hexane, and methyl isobutyl ketone. These eleven solvents constitute 86% of all 550,738 tons of solvents released and transferred per year. Methanol alone constitutes over a quarter (27.1%) of the released and transferred solvents. 

Tamir A Wisniak, J. Vapor-liquid equilibria in the ternary systems tert-butyl alcohol - diethyl ketone - methyl isobutyl ketone and diethyl ketone - methyl isobutyl ketone - n-butyl alcohol and their binaries J. Chem. Eng. Data 1978,23, 293-298... 

Toluene/ethanol Ethyl cellulose (EC) poly(vinyl chloride-co-isobutyl vinyl ether) (PVC-IBVE) poly(4-tert-butyl styrene) (PTBS) polystyrene (PS) poly(vinyl methyl ketone) (PVMK)... 

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