Conversion of Oleic Acid into Azelaic and Pelargonic Acid by a Chemo-Enzymatic Route
作者:Elisabetta Brenna、Danilo Colombo、Giuseppe Di Lecce、Francesco G. Gatti、Maria Chiara Ghezzi、Francesca Tentori、Davide Tessaro、Mariacristina Viola
DOI:10.3390/molecules25081882
日期:——
readily crystallizes from the reaction medium. The chemical oxidation of the diol derivative, using atmospheric oxygen as a stoichiometric oxidant with catalytic quantities of Fe(NO3)3∙9∙H2O, (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO), and NaCl, affords 9,10-dioxostearic acid which is cleaved by the action of 35% H2O2 in mild conditions, without requiring any catalyst, to give pelargonic and azelaic
本文描述了用于将油酸转化为壬二酸和壬酸的化学酶促方法。它代表了臭氧分解的可持续替代方案,目前以工业规模进行反应。经过三个步骤后,以高化学纯度以 44% 的分离率生产壬二酸,避免了柱层析纯化。在第一步中,在 35% H2O2 存在下脂肪酶介导的过油酸生成用于将不饱和酸自环氧化成相应的环氧乙烷衍生物。该中间体进行原位酸催化开环,得到 9,10-二羟基硬脂酸,它很容易从反应介质中结晶出来。二醇衍生物的化学氧化,