Reactions of lithium silenolates with acetylenes. Formation and characterization of 2-siladienes

Citation
J. Ohshita et al., Reactions of lithium silenolates with acetylenes. Formation and characterization of 2-siladienes, ORGANOMETAL, 20(6), 2001, pp. 1065-1070
Citations number
30
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
ORGANOMETALLICS
ISSN journal
0276-7333 → ACNP
Volume
20
Issue
6
Year of publication
2001
Pages
1065 - 1070
Database
ISI
SICI code
0276-7333(20010319)20:6<1065:ROLSWA>2.0.ZU;2-5
Abstract
Treatment of lithium silenolates, (Me3Si)(2)=C(OLi)R-1 (1; R-1 = t-Bu, Ad, Mes), with phenyl-substituted acetylenes, PhC=CR2 (R-2 = Ph, Me), produced lithium ethenylsilenolates, Ph-(Me3Si)C=CR2(Me3Si)Si=C(OLi)R-1,R- cleanly. The ethenylsilenolates thus produced reacted readily with H2O and Mel to gi ve Si-substitution products in good yield. In contrast, they underwent O-si lylation with Et3SiCl to give 2-siladiene derivatives which were characteri zed by their NMR spectra.