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Synthesis and characterization of some long‐chain diesters with branched or bulky moieties
Author(s) -
Knothe Gerhard,
Dunn Robert O.,
Shockley Michael W.,
Bagby Marvin O.
Publication year - 2000
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/s11746-000-0138-x
Subject(s) - bifunctional , chemistry , diol , mass spectrometry , catalysis , organic chemistry , mass spectrum , chromatography
Several novel fatty diesters with bulky moieties were synthesized by esterification of mono‐ or bifunctional fatty acids or with mono‐ or bifunctional alcohols using p ‐toluenesulfonic acid as catalyst. They were characterized by 1 H and 13 C nuclear magnetic resonance as well as positive chemical ionization (PCl) mass spectrometry. The PCl mass spectra of the resulting diol diesters and diacid diesters are discussed and compared. The compounds were investigated as potential additives for improving the cold flow properties of vegetable oil esters used as biodiesel.