Methyl ethylketone

Although the addition of hydrazine and its derivatives to acetylenic ketones has been studied in considerable detail, their interaction with hydrazones and mono-alkylhydrazones is less well known. Yandovskii and Klindukhova (74ZOR730) have studied the reaction between hydrazones and alkylhydrazones of aliphatic ketones with dipropynylketones and showed that hydrazones of acetone, methyl-ethylketone, and cyclohexane easily add to one of the triple bonds of dipropynylketone to form 4-methyl-1,1,3-trialkyl-2,3-diaza-l,4-nonadien-7-yn-6-ones (yields... 

The experimental rates and equilibrium constants (333 K) of the peroxyl radicals of methyl-ethylketone reacting in 1,1-dimethylethanol are given below [10]. 

These often correspond to aromatic hydrocarbons (xylene, toluene, ethylbenzenes, etc.) and ketones (methyl-ethylketone, methyl-isobutylketone, methyl-propyl-ketone, etc.). 

Azeotropic and Partially Miscible Systems. Azeotropic mixtures are those whose vapor and liquid equilibrium compositions are identical. Their x-y lines cross or touch the diagonal. Partially miscible substances form a vapor phase of constant composition over the entire range of two-phase liquid compositions usually the horizontal portion of the x-y plot intersects the diagonal, but those of a few mixtures do not, notably those of mixtures of methyl-ethylketone and phenol with water. Separation of azeotropic mixtures sometimes can be effected in several towers at different pressures, as illustrated by Example 13.6 for ethanol-water mixtures. Partially miscible constant boiling mixtures usually can be separated with two towers and a condensate phase separator, as done in Example 13.7 for n-butanol and water. 

Dramatic solvent effects are observed on the regioselectivity of propylene carbon-ylation to butyl n- and iso-butyrate . In butanol, for example, a (Ph3P)2PdCl2 catalyst and excess Ph3P ligand, at 100°C and under 9 MPa of CO partial P, a 2 1 ratio of normal to branched butyl butyrates are obtained. In methyl ethylketone, however, 1 3 ratio of the n- to i-butyrate esters are obtained. 

It turned out that the right choice of solvent is extremely important to obtain living ROMP. Chlorinated hydrocarbons are best (e.g. chlorobenzene, 1,2-dichlorobenzene, 1,2,4-trichlorobenzene, CH2CI2, 1,1,2-trichloroethane yields >90% PDI <1.3), followed by esters (e.g. ethylacetate, y-butyrolactone yields 70-80% PDI 1.2-1.5) and ethers (dimethoxyethane, THF yields <40% PDI 1.3-1.5). Ketones (e.g. methyl-ethylketone, cyclopentanone), amides (e.g. DMF, N-methyl-pyrrolidone) and sulfoxides (e.g. sulfolane, DMSO) gave no isolatable yields. 

Satya Rao, D. Prasad, D. H. L. Activity coefficients for the binary mixtures of methyl-ethylketone with some chlorohydrocarbons at 94.8 kPa Phys. Chem. Liq. 2004,42,585-588... 

Polyetherimide is not resistant to chloroform, methyl ethylketone, ethyl acetate,... 

In the 1940s a major process change was introduced—direct oxidation of butane to acetic acid and coproducts (such as methyl-ethylketone) ... 

An anti-mites and allergic asttuna preventing textile is sprayed witti anti-mite solution and other required ingredients. Textile fabric has stain and liquid resistance because it was coated with stain-resistant polyurettiane coating, containing solvent such as methyl-ethylketone, methylisobutylketone, acetone an alcohol-based solvent such as isopropylal-cohol, n-hexanol 1,2-dichlorobenzene, N-methylpyrrolidone, or N,N-dimethylformamide. ... 

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