Carbenoid entry into trifluoromethylated molecules: preparation of functionalized CF3-containing γ, δ -unsaturated carboxylic esters by rhodium-catalyzed reaction of ethyl 3,3,3-trifluoro-2-diazo-propionate with allylic sulfides and their further facile conversion to trifluoromethylated conjugated dienoic esters
作者:Guoqiang Shi、Yuanyao Xu、Ming Xu
DOI:10.1016/s0040-4020(01)96907-8
日期:1991.1
The [2,3]-sigmatropic rearrangement of sulfonium ylidesderivedfrom rhodium-catalyzed decomposition of ethyl 3,3,3-trifluoro-2-diazopropionate in the presence of allylic sulfides affords a variety of functionalized CF3-containing γ , δ-unsaturated carboxylic esters which have been further converted to synthetically useful trifluoromethylated dienoic esters via the dehydrosulfenylation sequence. For