Kinetic and thermodynamic control in the
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Michelangelo Gruttadauria; Renato Noto
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Article
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2001
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Journal of Heterocyclic Chemistry
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English
β 38 KB
## Abstract The stereoselective rearrangement of tetrahydrofuran or tetrahydropyran rings having a phenylsulfanyl group in an __exo__ position, __via__ the intermediate thiiranium ions, is reported. The 5β or 6β__exo__βtet cyclization of hydroxy sulfides gave the kinetic products while the 6β__endo