통합자연과학논문집 (Journal of Integrative Natural Science)

조선대학교 기초과학연구원 (The Basic Science Institute Chosun University)
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Redistribution/Dehydrocoupling of Endocrine n-$Bu_3SnH$ to Polystannanes Catalyzed by Group 4 Metallocene Complexes

  • Park, Jaeyoung (Department of Biotechnology, Chosun University) ;
  • Kim, Seongsim (Department of Biotechnology, Chosun University) ;
  • Lee, Beomgi (Department of Biotechnology, Chosun University) ;
  • Cheong, Hyeonsook (Department of Biotechnology, Chosun University) ;
  • Noh, Ji Eun (Department of Chemistry and Nanotechnology Research Center, Chonnam National University) ;
  • Woo, Hee-Gweon (Department of Chemistry and Nanotechnology Research Center, Chonnam National University)
  • 투고 : 2012.06.15
  • 심사 : 2012.06.24
  • 발행 : 2012.06.30
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초록

Trialkyltin n-$Bu_3SnH$, an endocrine disruptor, was slowly converted by the catalytic action of group 4 $Cp_2MCl_2$/Red-Al (M = Ti, Zr, Hf) to produce two phases of products: one is an insoluble cross-linked solid, polystannane in 7-23% yield as minor product via redistribution/dehydrocoupling combination process, and the other is an oil, hexabutyldistannane in 69-90% yield as major product via simple dehydrocoupling process. Redistribution/dehydrocoupling process first produced a low-molecular-weight oligostannane possessing partial backbone Sn-H bonds which then underwent an extensive cross-linking reaction of backbone Sn-H bonds, leading to an insoluble polystannane. This is the first exciting example of redistribution/dehydrocoupling of a tertiary hydrostannane catalyzed by early transition metallocenes.

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