Stereoselective synthesis of trifluoromethylated compounds via Johnson-Claisen and Eshenmoser-Claisen rearrangements
作者:Tsutomu Konno、Hirofumi Nakano、Tomoya Kitazume
DOI:10.1016/s0022-1139(97)00049-3
日期:1997.10
resolution of the corresponding propargylic alcohols, are demonstrated. As a result, it is shown that both reactions could become important methods for the preparation of highly functionalized chiral trifluoromethylated materials.
Synthesis and application of α-trifluoromethylated aldehydes
作者:Tsutomu Konno、Takashi Yamazaki、Tomoya Kitazume
DOI:10.1016/0040-4020(95)00863-4
日期:1996.1
for the synthesis of α-trifluoromethylatedaldehydes are described. One is a synthetic method via Pummerer rearrangement followed by the hydrolysis under the weakly basic condition, giving the recemic aldehyde. The other is via the oxidative cleavage of the corresponding diol under the acidic condition, affording the optically active compound for the first time. Furthermore, both aldehydes underwent