1,2-BIS(TRIMETHYLSILYL)-1,2-DIMESITYLETHENE - FORMATION FROM 1,1-DIMESITYL-2-BROMOETHENE

Authors
BROOK AG XU YL IONKIN A LOUGH AJ
Citation
Ag. Brook et al., 1,2-BIS(TRIMETHYLSILYL)-1,2-DIMESITYLETHENE - FORMATION FROM 1,1-DIMESITYL-2-BROMOETHENE, Organometallics, 16(19), 1997, pp. 4226-4228
Citations number
8
Categorie Soggetti
Chemistry Inorganic & Nuclear","Chemistry Inorganic & Nuclear
Journal title
Organometallics → ACNP
ISSN journal
02767333
Volume
16
Issue
19
Year of publication
1997
Pages
4226 - 4228
Database
ISI
SICI code
0276-7333(1997)16:19<4226:1-FF1>2.0.ZU;2-J
Abstract
Treatment of 1,1-dimesityl-2-bromoethene in ether at room temperature with n-butyllithium gave rise to 1,2-dimesitylacetylene, which when tr eated with lithium and trimethylchlorosilane formed (E)-1,2-bis(trimet hylsilyl)-1,2-dimesitylethene in quantitative yield. In contrast, trea tment of the bromoethene at -78 degrees C with n-butyllithium in THF ( but not either) results in halogen-metal exchange: the resulting organ olithium reagent was trapped with trimethylchlorosilane.