Reaction of methyl alpha-eleostearate with mercuric acetate View Full Text


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Article Info

DATE

1956-08

AUTHORS

Ralph W. Planck, Robert T. O'Connor, Leo A. Goldblatt

ABSTRACT

Methyl alpha-eleostearate has been reacted with mercuric acetate in acetic acid solution. Carrying out the reaction below room temperature gave products having the highest mercury content. Even these products were relatively unstable, gradually decomposing to produce mercury or mercurous acetate or both at room temperature. A typical product obtained at 10°C. is a viscous, pale yellow oil, insoluble in petroleum ether but soluble in alcohol, ether, and chloroform. Each C18 chain contained, on the average, 1.4 acetoxymercuri-groups (CH3COOHg−), 1.5 acetoxyl groups attached directly to the carbon chain and 0.4 double bonds. For each mole of mercuric acetate added to the methyl eleostearate approximately one mole of mercuric acetate was reduced to mercurous acetate and a double bond in the ester chain was oxidized to an oxygen-containing group of undetermined structure. Treatment of the acetoxymercuri-, acetoxy-ester with aqueous chlorides or bases yielded the corresponding chloromercuri- or hydroxymercuri-derivative. Refluxing the acetoxymercuri-, acetoxy-ester in alcoholic potassium hydroxide saponified all the ester linkages and removed the acetoxymercuri-groups with the formation of an equal number of double bonds, most of which are present in conjugatedtrans-trans systems. The Marvel-Rands chromatographic procedure was modified to permit determination of total acetoxyl groups and of acetoxyl groups attached to mercury atoms. Acetoxyl groups of the latter kind can also be determined by direct titration with standard base. More... »

PAGES

350-353

References to SciGraph publications

  • 1950-04. An improved method for the determination of iodine numbers in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1955-03. Paper chromatography of unsaturated fatty acid esters as their mercuric acetate addition compounds in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1953-10. A halogenation method for the determination of the total unsaturation of tung oils and of eleostearic acids in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1947-06. The spectrophotometric determination of thealpha andbeta isomers of eleostearic acid in tung oil in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1937-01. Use of mercurated fatty compounds as weed killers in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
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    http://scigraph.springernature.com/pub.10.1007/bf02665108

    DOI

    http://dx.doi.org/10.1007/bf02665108

    DIMENSIONS

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