Ethylene Glycol → Octanoic Acid

Beteiligte Stoffe

Reaktionsschritte

Three fractions containing 68.6 to 97.8% of 2-hydroxyethyl caprylate were obtained by heating caprylic acid (1.25 mol; 180 g) with ethylene glycol (8.27 mol; 513.5 g) to boiling temperature for 5 hours and gradual distillation; the overall yield of 2-hydroxyethyl caprylate was 61.3%. In addition to 2-hydroxyethyl caprylate, ethylene dicaprylate was formed from 21% of caprylic acid. In a similar experiment, the reaction mixture after 7 hours of heating was first extracted with benzene and the benzene extract with water, instead of direct distillation. Caprylic acid was consumed in 60.6% for 2-hydroxyethyl caprylate, whereas ethylene dicaprylate resulted from 21.5% of acid; distillation gave fractions of raw product containing 97.6 to 98.5% of 2-hydroxyethyl caprylate. Further procedure was carried out according to example 1.

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