Tetrahedron p. 12979 - 12990 (1997)
Update date:2022-09-26
Topics:
Teng, Zhu
Boss, Christoph
Keese, Reinhart
The mono-, di- and spirocyclic silaalkanes 5, 6 and 9/10 are readily prepared from the di- and tetraallylsilanes 4 and 8 respectively by Cp2Zr induced ring forming reactions. The diallylsilole 16 reacts at 0°C and in presence of an excess of Cp2Zr to the tricyclic compound 19 whereas the silaspiro[4.4]nonadienes 21 and 22 are formed at room temperature. High stereoselectivity is observed in all of these Cp2Zr induced cyclization reactions.
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