Cyclopentanone solubility

Commercial food grade water-soluble Cu-chlorophyllin is the most notable among these preparations. Copper chlorophyllins are produced from crude natural chlorophyll extracts followed by the hydrolysis of the phytyl and methyl esters, cleavage of the cyclopentanone (E) ring in dilute alkali, and the replacement of magnesium by copper. ... 

As a consequence of the polarity of the amide group, the lower-molecular-weight amides are relatively high-melting and water-soluble, as compared to esters, amines, alcohols, and the like. The few that are liquids, such as 7V,7V-dimethylmethanamide and l-methyl-l-aza-2-cyclopentanone, have excellent solvent properties for both polar and nonpolar substances. Therefore they are good solvents for displacement reactions of the SN type (Table 8-5). 

The polymer obtained by this procedure is a red powder, insoluble in methanol and ethanol but soluble in THF, benzene, chlorobenzene, cyclopentanone and other nonpolar organic solvents. The polymer had a molecular weight of -300,000 with a polydispersity of -4 as determined by GPC relative to polystyrene standard. All spectroscopic properties are in accord with the proposed structure. Some of the properties are solvent dependent. For example, the polymer is thixsotropic in benzene. 

The amino groups of ovomucoid, lysozyme, and ovotransferrin were alkylated extensively (40-100%) with various carbonyl reagents in the presence of sodium borohydride. Monosubstitution was observed with acetone, cyclopentanone, cyclohexanone, and benzaldehyde, while 20-50% disubstitution was observed with 1-butanal and nearly 100% disubstitution was observed with formaldehyde. The methylated and isopropylated derivatives of all three proteins were soluble and retained almost full biochemical activities. Recently amine boranes have been shown to be possible alternative reducing agents for reductive alkylation... 

The first phenolic derivative of ferrocene to be reported, di(l-hy-droxy-3-methyl-cyclopentadienyl) iron, was prepared by the reaction between 3-methyl-2-cyclopentanone, sodamide, and ferrous chloride in liquid ammonia. This compound is remarkably unstable, being extremely sensitive to air. It is a yellow substance which sublimes at 130-140° at 0.1 mm pressure, and is readily soluble in methylene dichloride but insoluble in carbon tetrachloride and in n-heptane. In water saturated with nitrogen a yellow solution is produced which rapidly bec( nes blue-green on exposure to air. The compound forms a benzoate (mp 121-123.5°) which is stable in air. An analogous derivative of the dicyclo-pentadienyl cobalt (III) cation has also been obtained (6). 

The importance of the right solvent is shown in Table I. In a study with cyclopentanone the highest yield was obtained in THF in which sublimed K -butoxide is soluble to the extent of 25% at 25-26°. But even in hexane in which K -butoxide is only sparingly soluble the yield was 38%. It should be recalled that the yield was only 7% when the base-solvent system was potassium ethoxide in a mixture of ether and ethyl alcohol. 

In all of the three polyester systems examined, compositions can be prepared which show solubility in a variety of organic liquids. While most of the solvents are chlorinated hydrocarbons, others such as tetrahydrofuran, n-methyl pyrrolidone, cyclopentanone and dimethyl acetamide are also effective. All of the three polymer systems —... 

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