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Synlett 1999; 1999(11): 1766-1768
DOI: 10.1055/s-1999-2949
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Kinetics of a Novel 1,2-Rearrangement Reaction of β-Silyl Radicals. The Ring-expansion of (3-Oxa-2-silacyclopentyl)methyl Radical into 4-Oxa-3-silacyclohexyl Radical Is Irreversible

Isamu Sugimoto* , Satoshi Shuto, Akira Matsuda
  • *Graduate School of Pharmaceutical Sciences, Hokkaido University, Kita-12, Nishi-6, Sapporo 060-0812, Japan; Fax +81 (11) 7 06 49 80; E-mail: shu@pharm.hokudai.ac.jp
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Publication Date:
31 December 1999 (online)

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The kinetic study of the novel ring-expansion reaction of (3-oxa-2-silacyclopentyl)methyl radical into 4-oxa-3-silacyclohexyl radical with a precursor for 3-oxa-2-silacyclopentylmethyl radical 3 showed that the ring-expansion reaction is irreversible with a rate constant of 6.1×104 s-1 at 80 °C.

kinetics - radical reaction - rearrangement - ring expansion - silicon