,-Oligosilyl Dianions and Their Application in the Synthesis of
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- 作者：Roland Fischer ; Dieter Frank ; Walter Gaderbauer ; Christian Kayser ; Christian Mechtler ; Judith Baumgartner ; and Christoph Marschner
- 刊名：Organometallics
- 出版年：2003
- 出版时间：September 1, 2003
- 年：2003
- 卷：22
- 期：18
- 页码：3723 - 3731
- 全文大小：322K
- 年卷期：v.22,no.18(September 1, 2003)
- ISSN：1520-6041
文摘
The reactions of bridged tris(trimethylsilyl)silyl fragments with 2 molar equiv of potassiumtert-butoxide allow the generation of 
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-oligosilyl dianions (1a, 2a, 3a, 4a). Depending onthe nature of the spacer between the oligosilyl units, these compounds can be used to generateeither linear or cyclic derivatives. They are especially attractive for the formation of homo-and heterocyclosilanes, as exemplified by the synthesis of sila-, stanna-, and zirconocenacyclosilanes. A linear bis(potassiumsilyl)acetylene (4a) was used to bridge two zirconoceneunits, (Cp2Zr(Cl)Si(SiMe3)2CCSi(SiMe3)2Zr(Cl)Cp2) (11).
,-oligosilyl dianions (1a, 2a, 3a, 4a). Depending onthe nature of the spacer between the oligosilyl units, these compounds can be used to generateeither linear or cyclic derivatives. They are especially attractive for the formation of homo-and heterocyclosilanes, as exemplified by the synthesis of sila-, stanna-, and zirconocenacyclosilanes. A linear bis(potassiumsilyl)acetylene (4a) was used to bridge two zirconoceneunits, (Cp2Zr(Cl)Si(SiMe3)2CCSi(SiMe3)2Zr(Cl)Cp2) (11).