Ionic Liquid-Promoted Regiospecific Friedlander Annulation: Novel Synthesis of Quinolines and Fused Polycyclic Quinolines
作者:Sanjay S. Palimkar、Shapi A. Siddiqui、Thomas Daniel、Rajgopal. J. Lahoti、Kumar V. Srinivasan
DOI:10.1021/jo035153u
日期:2003.11.1
Several room-temperature ionic liquids (ILs) based on 1-butylimidazolium salts with varying anions were synthesized and evaluated for the preparation of biologically active substituted quinolines and fused polycyclic quinolines using the Friedlander heteroannulation reaction. On screening, 1-butylimidazolium tetrafluoroborate [Hbim]BF4 was found to be the best ionic liquid for the heteroannulation reaction
Parallel Microwave-Assisted Synthesis of Ionic Liquids and Screening for Denitrogenation of Straight-Run Diesel Feed by Liquid-Liquid Extraction
作者:Miguel A. Ceron、Diego J. Guzman-Lucero、Jorge F. Palomeque、Rafael Martinez-Palou
DOI:10.2174/138620712800194477
日期:2012.4.1
Fifty-six ionicliquids were efficiently synthesized in parallel format under one-pot, solvent-freemicrowave-assisted synthesis. These compounds were evaluated as extracting agents of nitrogen-containing compounds from a real Diesel feed before being submitted to the hydrodesulfurization process to obtain ultralow sulfur Diesel. Our results showed that halogenated ionicliquids are an excellent alternative
Symmetrical 1,3‐Dialkylimidazolium Based Ionic Liquid Crystals
作者:Rondla Rohini、Ching‐Kuan Lee、Jung‐Tang Lu、Ivan J. B. Lin
DOI:10.1002/jccs.201200598
日期:2013.7
rod‐like imidazoliumsalts, is assigned. Studies from powder X‐ray diffraction suggest a lamellar structure with noninterdigitated monolayer arrangement for the LC salts in the mesophase. In addition, a short note on the structure and property relationship for rod‐like, disc‐ or fan‐like, and dendritic shaped imidazoliumionicliquid crystals (ImILCs) forming smectic, columnar, and cubic phase is briefly
Convenient and General Synthesis of Symmetrical N,N’-Disubstituted Imidazolium Halides
作者:Karsten J. Harlow、Anthony F. Hill、Tom Welton
DOI:10.1055/s-1996-4293
日期:1996.6
N,N’-Dialkyl- and N,N-dibenzylimidazolium chlorides or bromides were synthesized in high yield from the appropriate primary alkyl or benzyl halide and N-trimethylsilylimidazole.
A highly efficient synthetic procedure for deuteriating imidazoles and imidazolium salts
作者:Christopher Hardacre、S. E. Jane McMath、John D. Holbrey
DOI:10.1039/b009097m
日期:——
Both substituted imidazoles and 1,3-dialkylimidazolium salts
can be fully deuteriated on the heterocyclic ring using D2O over
heterogeneous Pd catalysts: deuteriated 1-alkyl-3-methylimidazolium
chloride and hexafluorophosphate ionic liquids can also be prepared in good
yields utilising readily available and relatively low cost sources of
deuterium.