The reaction of cyclo-oct-4-enecarboxylic acid (I) with sulphuric acid is reported: an improved preparation of the lactone of 4-hydroxycyclo-octanecarboxylic acid and its conversion into 1,4-dimethylenecyclo-octane are described together with the chemical and light absorption properties of the latter.
C. S. Dean, D. A. Jonas, S. H. Graham and D. O. Lewis, J. Chem. Soc. C, 1968, 3045 DOI: 10.1039/J39680003045
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