Useful direct conversion of tetrahydropyranyl ethers of fatty alcohols into fatty acids

Tetrahydro‐2‐pyranyl ethers from fatty primary alcohols can be converted in a one‐step procedure into the corresponding carboxylic acids in high yields. This process avoids the synthesis of symmetrical esters, particularly for long‐chain compounds. This reaction proved to be useful, for instance, to produce polyunsaturated fatty acids immediately before their biological testing.