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Kinetic and thermodynamic control in the intramolecular hydroxyl capture of seleniranium ions

✍ Scribed by Michelangelo Gruttadauria; Renato Noto

Publisher: Elsevier Science
Year: 1999
Tongue: French
Weight: 265 KB
Volume: 40
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(99)01779-7

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✦ Synopsis

The formation of tetrahydrofurans and tetrahydropyrans by acid catalyzed cyclization of hydroxy selenides can be explained by kinetic and thermodynamic control. The tetrahydropyrans from the hybrid 7-endo/6-exo cyclization are the thermodynamic products of the acid catalyzed cyclization of hydroxy selenides 1, whereas the tetrahydrofurans from the 5-exo cyclization are the kinetic products.

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