Summary
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1.
Methyl eleostearate has been thermally cyclized in good yields, and a concentrate of the cyclic product has been prepared.
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2.
Using small amounts, a technique has been devised for a) aromatization of the resultant cyclohexadiene, b) oxidation to orthophthalic acid, and c) characterization of the acid as the anhydride and the imide.
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3.
The significance of cyclic fatty acids in industrial processes is discussed.
Zusammenfassung
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1.
Ringbildung von methyleleostearat auf thermischem wege ergab gute resultate, und ein konzentrat des ring-produktes wurde prepariert.
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2.
Eine neue technik fuer die benutzung von kleineren mengen ermoeglichte: a) aromatisation des entstandenen cyclohexadien, b) oxdierung zu orthophthalischer säure, und c) charakterisierung der säure ais anhydrin und imid.
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3.
Die bedeutung von fettsäure-ringen in industriellen verfahren wird besprochen.
Resumé
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1.
Le méthyleleostéarate a été cyclisé thermiquement avec bon rendement et un concentré du produit cyclique a été préparé.
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2.
Au moyen d'une nouvelle technique, utilisant des quantités minimes de matériel, il a été possible a) d'aromatiser les cyclohexadiènes obtenus, b) d'oxyder l'acid orthophthalique, et c) d'établir la constitution de l'acide comme anhydride ou imide.
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3.
L'importance pour l'industrie des acides gras cycliques est discutée.
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Paschke, R.F., Wheeler, D.H. Cyclization of eleostearic acid. J Am Oil Chem Soc 32, 473–478 (1955). https://doi.org/10.1007/BF02639941
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DOI: https://doi.org/10.1007/BF02639941