Photoisomerization of Ionic Liquid Ammonium Cinnamates: One-Pot Synthesis−Isolation of<i>Z-</i>Cinnamic Acids
作者:María L. Salum、Cecilia J. Robles、Rosa Erra-Balsells
DOI:10.1021/ol1019508
日期:2010.11.5
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
光异构化是烯烃逆热力学E-Z异构化的唯一直接方法。该方法的合成应用受到其可逆性的限制,这导致了两种异构体的光平稳状态混合物。首次描述了在离子液体E-肉桂酸的乙腈溶液中通过光异构化对固体离子液体Z-肉桂酸进行高效单锅制备的方法。