Facile Synthesis of Benzaldehyde-Functionalized Ionic Liquids and Their Flexible Functional Group Transformations
http://www.hindawi.com/journals/oci/2012/208128/
Organic Chemistry International
Volume 2012 (2012), Article ID 208128, 5 pages
doi:10.1155/2012/208128
Department of Materials Science and Engineering, Yunnan University, Kunming 650091, China
Three benzaldehyde-functionalized ionic liquids were readily synthesized by quaternization of N-alkylimidazole with benzaldehyde-functionalized alkyl bromides under microwave irradiation in good yield. These aldehyde-functionalized ionic liquids could easily be oxidized in the presence of H2O2/KOH or be reduced by NaBH4 leading to the formation of the corresponding carboxyl-functionalized ionic liquids or benzylic alcohol-functionalized ionic liquids. In addition, the condensations of these functionalized ones with hydrazine hydrate and with aniline under reductive amination conditions were demonstrated.
http://www.hindawi.com/journals/oci/2012/208128/
