Acetone, 120 ketones

Ketones. Acetone, ethyl methyl ketone, diethyl ketone, acetophenone,... 

Krivun, Shian, and Dorofeenko condensed acetylacetone or dibenzoylmethane with various ketones (acetone, acetophenone, acetothienone, 1-acetylnaphthalene, or 5-acetylacetaphthene) and obtained pyrylium salts in 10-20% yield in the presence of perchloric acid. 

Besides acetophenone, this reaction was also applied to p-chloro- andp-methoxyacetophenone, and even to an aliphatic ketone, acetone (although the yield was stated to be only half as large as that obtained from mesityl oxide, i.e., less than 30%, Dorofeenko and co-workers reported a 45% yield of 2,4,6-trimethylpyrylium perchlorate from acetone, acetic anhydride, and perchloric acid), and is the standard method for preparing pyrylium salts with identical substituents in positions 2 and 4. The acylating agent may be an anhydride in the presence of anhydrous or hydrated ferric chloride, or of boron fluoride, or the acid chloride with ferric chloride.Schneider and co-workers ... 

As a symmetrical ketone, acetone is a reactive compound with many synthetic uses. Among the important chemicals based on acetone are methylisobutyl ketone, methyl methacrylate, ketene, and diacetone alcohol. 

Aliphatic ketones Acetone Animal waste hv 0-10 ppbv... 

The series of organic compounds with the general formula RR CO, where R and R are univalent hydrocarbon radicals, e.g., methyl ethyl ketone acetone is dimethyl ketone. 

Diethyl ether Divinyl ether Diisopropyl ether Ketones Acetone... 

Zhao WY, Misumi J, Yasui T, et al. 1998. Effects of methyl ethyl ketone, acetone, or toluene coadministration on 2,5-hexanedione concentration in the sciatic nerve, serum, and urine of rats. Int Arch Occup Environ Health 71 236-244. 

The alkyl substituents of the amino group need not be primary to be susceptible to oxidative removal. They can be secondary like the isopropyl group of propranolol (Fig. 4.53) in which case the carbinolamine dissociates into a ketone (acetone) and a primary amine. 

The extraction of TcO with methyl ethyl ketone, acetone, and pyridine results in a ruthenium decontamination factor of about 10 . Another effective separation method is based on the extraction of technetium as triphenylguanidinium pertechnetate from sulfuric acid by means of chlorex ()S-chloroethyl ether). Pertechnetate can be re-extracted with 3 N NH OH solution . 

This protocol complements Akiyama s method which provides P-amino carbonyl compounds as i yn-diastereomers [14], It tolerated aromatic, heteroaromatic, and aliphatic aldehydes. Cyclic ketones, acetone, as well as acetophenone derivatives could be employed. The use of aromatic ketones as Mannich donors was up to that time unprecedented in asymmetric organocatalysis. Rueping et al. independently expanded the scope of the asymmetric Brpnsted acid-catalyzed Mannich reaction of acetophenone [45]. 

Poly(methyl vinyl ketone) Acetone, methylene chloride... 

The synthetically most useful method for the preparation of dioxiranes is the reaction of appropriate ketones (acetone, trill uoroacetone, 2-butanone, cyclohexanone etc.) with Caroate, commercially available as the triple salt of potassium monoperoxysul-fate (KHSOs). The catalytic cycle of the dioxirane formation and oxidation is shown in Scheme 1 in general form. For acetone as the ketone, by simple distillation at a slightly reduced pressure ca 100 torr) at room temperature ca 20 °C), Jeyaraman and Murray successfully isolated dimethyldioxirane (DMD) as a pale yellow solution in acetone (maximally ca 0.1 M). This pivotal achievement in 1985 fomented the subsequent intensive research activity in dioxirane chemistry, mainly the synthetic applications but also the mechanistic and theoretical aspects. The more reactive (up to a thousandfold ) fluorinated dioxirane, methyl(trifluoromethyl)dioxirane (TFD), was later isolated in a similar manner by Curd, Mello and coworkers". For dioxirane derived from less volatile ketones, e.g. cyclohexanone, the salting-out technique has been developed by Murray and coworkers to obtain the corresponding dioxirane solution. 

The overheads from the "primary" distillation column contain the C, to Cg primary alcohols the lighter ketones (acetone, MEK etc) and the aldehydes. The individual chemicals are recovered and... 

Ketones Acetone Camphor Oil Cyclohexanone Diisobutyl Ketone Isophorone Mesityl Oxide Methyl Ethyl Ketone Methyl Isobutyl Ketone... 

The fluorination of nitriles is successful only if the resulting trifluoromethyl derivatives are low-boiling compounds (bp < IOC). Butyronitrile and isobutyronitrile give a mixture of products. The same trend is observed in the fluorination of ketones. Acetone is converted into 2,2-difluoropropane (90%) but other ketones, such as ethyl methyl ketone, undergo fragmentation.126... 

Walker et al. (1993) conducted a cohort mortality study among 7814 shoe-manufacturing workers (2529 males and 5285 females) from two plants in Ohio (United States) that have been in operation since the 1930s. The workers, men and women, were potentially exposed to solvents and solvent-based adhesives. It was thought that toluene may have been a predominant exposure, but a hygiene survey in 1977-79 showed that, in addition to toluene (10 measurements ranged from 10 ppm to 72 ppm [38-270 mg/m3]), there were also 2-butanone (methyl ethyl ketone), acetone, hexane and... 

Ketones acetone, methyl ethyl ketone, propione, acetophenone, cyclohexanone, camphor. 

Soluble in Petroleum ether, 50% or higher alcohols, propylene glycol, fats, oils Toluene, alcohols, methyl ethyl ketone, acetone, petroleum ether, benzene, fats, oils Ethanol, oils, ether, fats, oils Oil... 

A Hammett correlation for substituted ketones was also made using the derived Hammett constant cf. The least-substituted ketone, acetone, was used as the reference compound in the correlation. Only three ketones were used for the correlation therefore, the model may not be as robust as the other QSAR models. 

In conclusion it should be noted that the reactions of 2 equiv of ketone which result in dihydrodiazepine formation are characteristic not only of 1,2-diamines. For example, described in [104] is the interaction of or o-nitrophenylazide 95 with aliphatic and aromatic ketones (acetone, for example) in the presence of Sml2 which produces dihydrobenzodiazepines at high yields (Scheme 4.31). 

Quantitative Analysis. The derivatization/SIMS method can also be applied quantitatively. For example, two ketones, acetone and dg-acetone, were mixed in various concentrations in the range of 0.1 to 10 mg/mL and in the ratios of dg/dg = 10/1, 1/1,... 

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