Reactions of ethyl triphenylphosphoranylideneacetate with fluorinated β-ketoaldehyde derivatives
作者:Ivan S. Kondratov、Igor I. Gerus、Marina V. Furmanova、Sergey I. Vdovenko、Valery P. Kukhar
DOI:10.1016/j.tet.2007.04.102
日期:2007.7
The reactions of fluorinated beta-ketoaldehyde derivatives: beta-alkoxyvinyl polyfluoroalkyl ketones 1 and fluorinated beta-ketoacetals 2 with ethyl triphenylphosphoranylideneacetate 3 are described. In the case of ketones 1 the result of the reaction is a mixture of products: fluorinated alkoxydienes 5 (Wittig reaction product) and polyfluoroacyl vinyl ylides 7 (Michael addition product). The reaction with fluorinated beta-ketoacetals 2 leads to a mixture of E- and Z-isomers of polyfluoroalkyl acrylates 8 and 9, respectively. The influence of the nature of fluorinated substituent and solvent or other factors on the outcome of the reactions are discussed. (C) 2007 Elsevier Ltd. All rights reserved.