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Improved synthesis and low-temperature performance of a series of saturated α-branched fatty acids

Yang Jiang, Wenjing Hu, Jian Xu, and Jiusheng Li

Shanghai Advanced Research Institute, CAS, Shanghai, China



Abstract: Five saturated α-branched fatty acids, also known as Guerbet acids, including α-propylhexyl acid (G1), α-butylhexyl acid (G2), α-propyloctyl acid (G3), α-butyloctyl acid (G4), and α-hexyloctyl acid (G5), were synthesized in high yields by four-step reaction. Colorless, almost odorless, and oily products were obtained with high purity, whose structures were confirmed by GC, 1H/13C NMR, and ESI–MS characterization. G1, G3, and G4 had pour points lower than −60 °C, while G2 and G5 showed higher pour points (−42 °C and 6 °C, respectively) because of their molecular symmetry. Considering the low-temperature properties, G1, G3, G4, and even G2 held great potential applications in the lubricant and oilfield.

Keywords: Saturated α-branched fatty acids; Guerbet acids; Low-temperature performance; Pour point

Full paper is available at

DOI: 10.1007/s11696-017-0230-8


Chemical Papers 71 (12) 2359–2363 (2017)

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