Summary
A synthesis of 12-ketostearic acid in 78% yield from castor oil by methanolysis to methyl ricinoleate, reduction to methyl-12-hydroxystearate, oxidation to methyl-12-ketostearate, followed by saponification has been described in detail.
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Grummitt, O., Siedschlag, K.G. The synthesis of 12-ketostearic acid. J Am Oil Chem Soc 26, 690–691 (1949). https://doi.org/10.1007/BF02903173
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DOI: https://doi.org/10.1007/BF02903173