A new route to incompletely condensed silsesquioxanes: acid-mediated cleavage and rearrangement of (c-C6H11)(6)Si6O9 to C-2-[(c-C6H11)(6)Si6O8X2]

Authors
Feher, FJ Nguyen, F Soulivong, D Ziller, JW
Citation
Fj. Feher et al., A new route to incompletely condensed silsesquioxanes: acid-mediated cleavage and rearrangement of (c-C6H11)(6)Si6O9 to C-2-[(c-C6H11)(6)Si6O8X2], CHEM COMMUN, (17), 1999, pp. 1705-1706
Citations number
15
Categorie Soggetti
Chemistry
Journal title
CHEMICAL COMMUNICATIONS
ISSN journal
13597345 → ACNP
Issue
17
Year of publication
1999
Pages
1705 - 1706
Database
ISI
SICI code
1359-7345(19990907):17<1705:ANRTIC>2.0.ZU;2-S
Abstract
Acid-mediated cleavage and rearrangement of (c-C6H11)(6)Si6O9 1 by triflic acid (TfOH) and methanesulfonic acid (MsOH) produces good yields of C-2-[(c -C6H11)(6)Si6O8X2] (4a, X = OTf; 4b, X = MsO), which reacts with water, LiN Me2 and LiC=CPh to afford C-2-[(c- C6H11)(6)Si6O8(OH)(2)] 5, C-2-[(c- C6H11 )(6)Si6O8(NMe2)(2)] 8 and C-2-[(c- C6H11)(6)Si6O8(CCPh)(2)] 9; silylation o f 5 with ClSiMe2H-Et3N produces C-2-[(c-C6H11)(6)Si6O8(OSiMe2H)(2)] 6, whil e reaction of 5 with HBF4. OMe2-BF3. OEt2 produces C-2-[(c-C6H11)(6)Si6O8F2 ] 7, which also reacts with LiNMe2 and LiC=CPh to afford 8 and 9.