Treatment of 4,4-(trimethylenedithio)butanal meso-1,2-diphenylethylene acetal (3) with butyl-lithium gave a high yield of 2,2-(trimethylenedithio)cyclobutanol (8), which was transformed into 2-tetrahydropyran-2-yl-oxycyclobutanone (11), a potential intermediate for the synthesis of 1,4-diketones and cyclopentenones.
A. Murai, M. Ono and T. Masamune, J. Chem. Soc., Chem. Commun., 1977, 573 DOI: 10.1039/C39770000573
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