Premium
A convenient laboratory method for preparing trans, trans ‐9, 11‐octadecadienoic acid
Author(s) -
Schneider Wilma J.,
Gast L. E.,
Teeter H. M.
Publication year - 1964
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/bf02664976
Subject(s) - polyester , yield (engineering) , distillation , pyrolysis , ethanol , chemistry , organic chemistry , nuclear chemistry , materials science , composite material
A convenient laboratory method to prepare trans,trans ‐ 9,11‐octadecadienoic acid (TTA) via a polyester intermediate is described. Ricinelaidic acid was heated at 235C under vacuum for 3–4 hr to form a polyester having a mol wt of 1,500–1,600. Pyrolysis of this polyester and simultane‐ous distillation of the products gave crude dehy‐drated acids. TTA was crystallized from a 95% ethanol solution of these acids, in a yield of 35%. Of the variables affecting pyrolysis, the mol wt of polyester had the greatest effect on yield of TTA.