Silanetriols as Powerful Starting Materials for Selective Condensation to Bulky POSS Cages
| Autor: | Hurkes, Natascha, Bruhn, Clemens, Belaj, Ferdinand, Pietschnig, Rudolf |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: | |
| Zdroj: | Organometallics |
| ISSN: | 1520-6041 0276-7333 |
| Popis: | Controlled condensation reactions of tertiary silanetriols CH3(CH2)n(CH3)2CSi(OH)3 (1b–f; n = 1–5) in the presence of trifluoroacetic acid and the hydrolysis of CH3(CH2)6(CH3)2CSiCl3 (3) lead to the selective formation of the corresponding disiloxane tetrols [CH3(CH2)n(CH3)2CSi(OH)2]2O (2b–g; n = 1–6) in good yields. The TBAF-driven condensation reactions of the silanetriols CH3(CH2)n(CH3)2CSi(OH)3 (1a–c; n = 0–2) as well as of the disiloxane-1,1,3,3-tetrol 2d (n = 3) yield in the selective formation of the first T8 cages bearing tertiary carbon substituents, CH3(CH2)n(CH3)2C (4a–d; n = 0–3), which was not possible via the condensation of their alkoxysilane counterparts so far. The resulting compounds 2b–g and 4a–d have been characterized by multinuclear NMR, MS, and single-crystal X-ray diffraction. |
| Databáze: | OpenAIRE |
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