Synthesis of an ansa-zirconocene via a novel S4-symmetric spirobis(silastannaindacene) compound

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1998
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Hüttenhofer, Mario
Schaper, Frank
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http://nbn-resolving.de/urn:nbn:de:bsz:352-238871
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https://doi.org/10.1002/(SICI)1521-3773(19980904)37:16<2268::AID-ANIE2268>3.0.CO;2-Y
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Angewandte Chemie International Edition. 1998, 37(16), pp. 2268-2270. ISSN 1433-7851. eISSN 1521-3773. Available under: doi: 10.1002/(SICI)1521-3773(19980904)37:16<2268::AID-ANIE2268>3.0.CO;2-Y
Zusammenfassung

A stereoselective reaction of Sn(NMe2)4 with the silyl-bridged bis(cyclopentadienyl) derivative 1 generates the novel spiro compound 2, in which two C2-symmetric six-membered rings of opposite configuration are joined at a tin center: One ring is R,R-, and the other S,S-configured. Subsequent reaction with two equivalents of ZrCl4 affords, by stereoselective Sn/Zr exchange, exclusively the C2-symmetric isomer of the ansa-zirconocene rac-3.

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Fachgebiet (DDC)
540 Chemie
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Metallocenes, spiro compounds, stereoselective synthesis, tin, zirconium
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ISO 690HÃœTTENHOFER, Mario, Frank SCHAPER, Hans-Herbert BRINTZINGER, 1998. Synthesis of an ansa-zirconocene via a novel S4-symmetric spirobis(silastannaindacene) compound. In: Angewandte Chemie International Edition. 1998, 37(16), pp. 2268-2270. ISSN 1433-7851. eISSN 1521-3773. Available under: doi: 10.1002/(SICI)1521-3773(19980904)37:16<2268::AID-ANIE2268>3.0.CO;2-Y
BibTex
@article{Huttenhofer1998Synth-23887,
  year={1998},
  doi={10.1002/(SICI)1521-3773(19980904)37:16<2268::AID-ANIE2268>3.0.CO;2-Y},
  title={Synthesis of an ansa-zirconocene via a novel S<sub>4</sub>-symmetric spirobis(silastannaindacene) compound},
  number={16},
  volume={37},
  issn={1433-7851},
  journal={Angewandte Chemie International Edition},
  pages={2268--2270},
  author={Hüttenhofer, Mario and Schaper, Frank and Brintzinger, Hans-Herbert}
}
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    <dcterms:abstract xml:lang="eng">A stereoselective reaction of Sn(NMe&lt;sub&gt;2&lt;/sub&gt;)&lt;sub&gt;4&lt;/sub&gt; with the silyl-bridged bis(cyclopentadienyl) derivative 1 generates the novel spiro compound 2, in which two C&lt;sub&gt;2&lt;/sub&gt;-symmetric six-membered rings of opposite configuration are joined at a tin center: One ring is R,R-, and the other S,S-configured. Subsequent reaction with two equivalents of ZrCl&lt;sub&gt;4&lt;/sub&gt; affords, by stereoselective Sn/Zr exchange, exclusively the C&lt;sub&gt;2&lt;/sub&gt;-symmetric isomer of the ansa-zirconocene rac-3.</dcterms:abstract>
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