Selective oxidation of sulfides: selective preparation of 1-trifluoromethyl vinyl sulfoxides
摘要:
Aqueous 30% H2O2 in hexafluoro-2-propanol (I-IFIP) is described as a facile, selective and efficient oxidative system for the conversion of l-trifluoromethyl vinyl sulfides to the corresponding vinyl sulfoxides under neutral conditions. By using 3-chlorobenzoic acid or other oxidizing reagents, further oxidation into vinyl sulfones was observed. (C) 1999 Elsevier Science S.A. All rights reserved.
Z-trifluoromethyl thioenol ethers, enol ethers, and enamines; reactivity towards organolithium reagents
作者:Jean-Pierre Bégué、Danièle Bonnet-Delpon、Michael H. Rock
DOI:10.1016/0040-4039(95)02118-3
日期:1996.1
conjugated with an unsaturation in the β-position undergo addition/elimination reactions with organolithium reagents to yield the corresponding trifluoromethyl alkenes while preserving the geometry of the double bond. Trifluoromethyl enamines exhibit a different reactivitytowards organolithium reagents with a vinyl anion being formed in preference to addition/elimination products.