A series of thiazolium salts was prepared and tested for the cleavage of the α‐hydroxyketone derived from methyl oleate. The robustness of these precatalysts was determined by dynamic thermogravimetric analyses (TGA). It has been shown that the stability of these species is mainly governed by the nature of the counter‐anion and some of them were found to be stable until 350–400 °C. The α‐hydroxyketone derived from methyl oleate was cleaved under reactive distillation conditions using optimized, thermally robust N‐butylthiazolium triflate to give the cleavage product, namely, nonanal and methyl azelaaldehydate, with 85 and 70 % yields. A range of α‐hydroxyketones derived from several fatty acids was cleaved to give the corresponding bio‐based aldehydes with up to 98 % isolated yields. Finally, this protocol was successfully applied to a high‐oleic sunflower oil derivative.
Chemistry - A European Journal – Wiley
Published: Jul 7, 2018
Keywords: ; ; ; ;
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