A new synthetic route for silacyclopropanes: Reactions of a bromosilylenoid with olefins

Hyeon Mo Cho, Kyongjin Bok, Seo Hyeon Park, Young Mook Lim, Myong Euy Lee, Moon Gun Choi, Kang Mun Lee

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Stable 1-bromo-1-silacyclopropanes were synthesized in high yields from the reaction of the stable bromotrisylsilylenoid 1 (trisyl = C(SiMe 3) 3) with olefins such as styrene, trimethylvinylsilane, triethylvinylsilane, and dimethylphenylvinylsilane, a new synthetic route for silacyclopropanes. The structure of bromosilacyclopropane 5 was confirmed by X-ray analysis. In the presence of excess MeOH the phenyl-substituted bromosilacyclopropane 2 underwent regioselective ring opening to give the corresponding product 6. In contrast, the reaction of silyl-substituted bromosilacyclopropane 5 with MeOH gave only the product of nucleophilic substitution at the silicon atom, 1-methoxy-1-silacyclopropane 7, without any ring opening. Furthermore, the bromosilacyclopropane 2 extruded bromosilylene 8 through a thermal cycloreversion reaction.

Original languageEnglish
Pages (from-to)5227-5230
Number of pages4
Issue number15
Publication statusPublished - 2012 Aug 13


All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry

Cite this

Cho, H. M., Bok, K., Park, S. H., Lim, Y. M., Lee, M. E., Choi, M. G., & Lee, K. M. (2012). A new synthetic route for silacyclopropanes: Reactions of a bromosilylenoid with olefins. Organometallics, 31(15), 5227-5230. https://doi.org/10.1021/om3005349