Base-catalyzed cleavage and homologation of polyhedral oligosilsesquioxanes

Authors
Feher, FJ Terroba, R Ziller, JW
Citation
Fj. Feher et al., Base-catalyzed cleavage and homologation of polyhedral oligosilsesquioxanes, CHEM COMMUN, (21), 1999, pp. 2153-2154
Citations number
38
Categorie Soggetti
Chemistry
Journal title
CHEMICAL COMMUNICATIONS
ISSN journal
13597345 → ACNP
Issue
21
Year of publication
1999
Pages
2153 - 2154
Database
ISI
SICI code
1359-7345(1999):21<2153:BCAHOP>2.0.ZU;2-C
Abstract
Readily available Cy6Si6O9 2 (Cy = c-C6H11) reacts with aqueous NEt4OH in T HF to afford endo-C-2h-Cy6Si6O7(OH)(4) 3a, which upon further hydrolysis pr oduces CySi(OH)(3) fragments capable of reacting with 3a to produce endo-C- 3-Cy7Si7O9(OH)(3) 1b; the reaction of 2 with aqueous NEt4OH in the presence of (vinyl)Si(OMe)(3) affords endo-C-s-Cy-6(vinyl)Si7O9(OH)(3) 1c via trapp ing of 3a with monosilanes derived from (vinyl)Si(OMe)(3).