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Diels‐Alder adducts from safflower oil fatty acids
Author(s) -
Balakrishna R. S.,
Murthy B. G. K.,
Aggarwal J. S.
Publication year - 1971
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/bf02638521
Subject(s) - adduct , chemistry , organic chemistry , fractionation , fatty acid , hydroquinone , styrene , linoleic acid , solvent , vacuum distillation , gas chromatography , chromatography , distillation , polymer , copolymer
Methyl esters of alkali‐isomerized safflower oil fatty acids after elaidinization with sulfur were treated with styrene in the presence of hydroquinone, with or without solvents. A combination of column chromatography and gas liquid chromatography techniques was employed for the estimation of the methyl esters of unreacted fatty acids, Diels‐Alder adduct and polymers in the reaction products. Maximum yield of the Diels‐Alder adduct (26.6%) was obtained when the elaidinized methyl esters of the fatty acids were treated with 1.5 moles of styrene per mole of linoleic acid in safflower oil fatty acids at 200–210 C for 6 hr. The methyl ester of the adduct was isolated in about 90% purity from the reaction product by vacuum distillation followed by solvent fractionation. The butyl ester of the adduct and the epoxy derivative of the methyl ester adduct were prepared and characterized.