Ketones mesityl oxide

The well-known condensation between 2-furaldehyde and acetone in a basic medium yields what is usually called furfurylidene acetone monomer composed of a mixture of 2-furfurylidene methyl ketone, di-2-furfurylidene ketone, mesityl oxide and other oligomers derived from further condensation reactions135. This mixture is then polymerized by the action of an acidic catalyst in the first phase of the reaction a polymer of low molecular weight is produced which on further treatment cross-links to a black insoluble and heat-resistant material136. ... [Pg.80]

In the template reactions, acetone can be replaced by the preformed aldol, diacetone alcohol, and also the a, P-unsaturated ketone mesityl oxide.90-93 The use of hydroxyketones can be extended to include benzoins, provided that the l,3-diaminopropanenickel(II) complex is used (equation 13).91... [Pg.165]

NIOSH Methods 1300 and 1301 (NIOSH 1984) describe the determination of common ketones in air. The compounds evaluated in the study include acetone, methyl propyl ketone, methyl isobutyl ketone, methyl n-butyl ketone, diisobutyl ketone, cyclohexanone, ethyl butyl ketone, methyl amyl ketone, ethyl amyl ketone, mesityl oxide, and camphor [76-22-2], The analysis involves adsorption... [Pg.118]

Dimedone has a trivial name because its preparation is so easy that it was discovered early in the history of organic chemistry. The first step is a conjugate addition of diethyl malonate to the unsaturated ketone mesityl oxide (4-methylpent-3-en-2-one given a trivial name for the same reason). Ethoxide ion is the base for the usual reason that nucleophilic substitution at the ester group simply regenerates starting material. [Pg.764]

USE- Solvent for fats. oils, waxes, resins, rubber, plastics, lacquers, varnishes, rubber cements. Manul methyl nobutyl ketone, mesityl oxide, acetic acid (ketenc process), diacctone alcohol, chloroform, iodoform, bromoform, explosives, aeroplane dopes, rayon, phntographic films, isoprene. storing acetylene gas (takes up about 24 times its vol of the gas) extraction o various principles from animal and plant substances m paint and varnish removers, purifying paraffin, hardening and dehydrating tissues Pharmaceutic aid (solvent)... [Pg.11]

As described previously, acetone can be transferred to a,p-unsaturated ketone (mesityl oxide) by condensation and then hydrogenated to methyl isobutyl ketone over NiMgAl-LDO catalysts (536a). The same reaction can be accomplished in one step over Pd supported on MgAl-LDO (586,587). [Pg.442]

Methyl 2-bromoisobutyl Ketone (Mesityl oxide hydrohromide, 2-bromo-2-methylpentanone-4)... [Pg.633]

A most challenging tainting problem was the occurrence of a catty note in some foods. Catty is used to describe the odor of tom cat urine. Pearce et al. [13] found that an unsaturated ketone, mesityl oxide, (4-methylpent-3-en-2-one) can react with sulfur compounds in a food, particularly hydrogen sulfide, to form a compound with a catty odor. This compound has been identified as 4-mercapto-methylpentan-2-one [14]. This reaction has been responsible for several tainting events in the industry. In one case, the mesityl oxide was a trace component (0.5%) in a solvent... [Pg.165]

Benzyl alcohol at 155.4°C Tetrahydrofuran, acetone-carbon disulfide mixtures, methyl ethyl ketone Toluene, xylene, methylene chloride, ethylene chloride, perchloroethylene-acetone mixtures, 1,2-dichlorobenzene, tetrahydrofurfuryl alcohol, dioxane, acetone-oarbon disulfide mixtures, cyclopentanone, diisopropyl ketone, mesityl oxide, isophorone, dimethyl-formamide, nitrobenzene, hexamethyl-phosphoramide, tricresyl phosphate Aliphatic and aromatic hydrocarbons, vinyl chloride monomer, alcohols, glycols, aniline, acetone, carboxylic acids, acetic anhydride, esters, nitroparaffins, carbon disulfide, nonoxidizing mineral acids, concentrated alkalies... [Pg.359]

Hexanone Methyl N-Butyl Ketone Isobutenyl Hethyl Ketone Mesityl Oxide... [Pg.148]

Methyl Akyl Acetate Methyl Isobutyl Ketone Mesityl Oxide Methyl Amyl Acetate Alpha-Methylstyrene N-Amyl Methyl Ketone Cresols... [Pg.153]

Isobutenyl Methyl Ketone Mesityl Oxide 4-Methyl-3-Penten-2-one... [Pg.3485]

Sodium Eormate Aloin Humic Acids Acetic Acid Ethyl Ester Ethyl Acetate Isobutenyl Methyl Ketone Mesityl Oxide 4-Methyl-3-Penten-2-one... [Pg.1670]

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