Ultrasound in fatty acid chemistry: Synthesis of a 1-pyrroline fatty acid ester isomer from methyl ricinoleate

  title={Ultrasound in fatty acid chemistry: Synthesis of a 1-pyrroline fatty acid ester isomer from methyl ricinoleate},
  author={Marcel S. F. Lie Ken Jie and M. S. K. Syed-rahmatullah and Chi Keung Lam and Prabhavathi Kalluri},
A novel 1-pyrroline fatty acid ester isomer [viz. 8-(5-hexyl-1-pyrrolin-2-yl)octanoate] has been synthesized from methyl ricinoleate by two routes with an overall yield of 42 and 30%, respectively. Most of the reactions are carried out under concomitant ultrasonic irradiation (20 KHz,ca. 53 watts/cm2). Under such a reaction condition, the reaction time is considerably shortened, and product yields are high. Dehydrobromination under concomitant ultrasonic irradiation of methyl 9,10-dibromo-12… 
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Ultrasound-assisted synthesis of santalbic acid and a study of triacylglycerol species inSantalum album (Linn.) seed oil

The distribution of the various fatty acids on the glycerol “backbone” was supported by the results from the13C NMR spectroscopic analysis of the TAG molecules of type AAA, which had a random distribution of saturated and unsaturated fatty acids, of which oleic acid was the predominant component.

Chemical and enzymatic preparation of acylglycerols containing C18 furanoid fatty acids

C18 furanoid triacylglycerol was prepared by chemical transformation of triricinolein isolated from castor oil by oxidation, epoxidation and cyclization of the epoxy-keto intermediate with sodium azide and ammonium chloride in aqueous ethanol.

Lipase-catalyzed hydrolysis of TG containing acetylenic FA

The results reconfirmed the observation that AY-30 and CCL were able to distinguish the slight differences in the molecular structure (position of the acetylenic bond and chain length) of the acyl groups in the TG during the hydrolysis of such TG substrates.



Syntheses of flufenamic acid metabolites I and II and other N-aryl-anthranilic acids

The syntheses of two metabolites of flufenamic acid, 5-hydroxy-N-(ααα-trifluoro-m-tolyl)anthranilic acid and N-(4-hydroxy-ααα-trifluoro-m-tolyl)anthranilic acid, are described. Syntheses of a number

A new efficient access to cyclic imines

Cyclic imines can be conveniently prepared from ω-azidoketones by an intramolecular ‘aza-Wittig’ reaction.

Skin responses to the sting of the imported fire ant (Solenopsis saevissima).

The fire ant causes destruction to crops and, according to Travis, 2 as many as 15% of the native fire ants of the South are destructive.

Isolation of a Hemolytic Component of Fire Ant Venom

A crystalline hemolytic principle, shown to be a constituent of fire ant venom and having the properties of an amine, was isolated from crude extracts of whole ants. The chromatographic procedure of

M.S.F., and Syed-Rahmatullah, M.S.K

  • (1991)J. Chem. Soc. Perkin Trans
  • 1991