Photoisomerization of ionic liquid ammonium cinnamates: one-pot synthesis-isolation of Z-cinnamic acids.
Photoisomerization presents the only direct method for contra-thermodynamic E-Z isomerization of olefins. Synthetic applications of this method have been limited by its reversible nature, which leads to a photostationary-state mixture of both isomers. For the first time, a highly efficient one-pot preparation-isolation of solid ionic liquid Z-cinnamic acids by photoisomerization in acetonitrile solution of ionic liquid E-cinnamic acids is described.
Salum
María L
ML
CIHIDECAR-Departamento de Química Orgánica, FCEN, Universidad de Buenos Aires, Pabellón II, 3er P, Ciudad Universitaria, 1428-Buenos Aires, Argentina.
Robles
Cecilia J
CJ
Erra-Balsells
Rosa
R