A short synthesis of conjugated unsaturated amides and esters via triphenylphosphine-catalysed isomerisation of acetylenic pentafluorophenyl esters†
作者:Uli Kazmaier
DOI:10.1039/a704927g
日期:——
Isomerisation of acetylenic pentafluorophenyl esters in the presence of phosphines gives rise to activated dienoic acids, which can be coupled directly with amines and alcohols in a simple one-pot procedure.
A short synthesis of conjugated unsaturated alcohols
作者:Uli Kazmaier
DOI:10.1016/s0040-4020(97)10385-4
日期:1998.2
Isomerization of acetylenic pentafluorophenyl esters in the presence of phosphines gives rise to activated dienoic esters, which can be reduced directly in a simple one pot procedure to the corresponding conjugated unsaturated alcohols 6-10. The higher reactivity of the pentafluorophenyl esters in comparison to alkyl esters allows their selective isomerization. (C) 1998 Elsevier Science Ltd. All rights reserved.