Perspective Chapter: Applications of Novel Ionic Liquids as Catalyst

Ionic liquids have much interesting attention in the area of biomedical and it’s an alternative to traditional organic solvents owing to their unique chemical, physical properties and environmentally eco-friendly catalytic responses. Ionic liquids have distinct properties like tunability that allows their physical and chemical behaviors to be changed as desired by changing the organic cations with inorganic anions or inorganic cations with organic anions or both cation and anion from organic moieties. Most of the organic reactions are carried out with assistance of catalyst, usually commercially available catalyst are very expensive, more hydroscopic in nature, thermally unstable and very difficult to recycle them but ionic liquids are acted as potential Lewis acidic behaviors, thermally stable, easily recycle inexpensive compared to commercial catalyst and easy to prepare electrically neutral organic cation which are loosely bind with inorganic anions, and organic (pyridinium/imidazolium/piperidinium) cation could be easily accelerate (or) activate the functional group for most of the organic reactions. Hence, ionic liquids plays a vital role in modern organic synthetic field and may be inevitable in future research

Synthesis and Characterization of Novel Dimeric Ionic Liquids by Conventional Approaches

The 1H-NMR shifts of the imidazolium protons of some novel dimeric ionic liquids were examined in various deuterated solvents. Interactions between the solvent and the imidazolium salt of butyl substituted ionic liquids were observed to give higher chemical shifts than methyl substitution

Solid Phase Synthesis of Xanthene Derivatives Assisted By Imidazolium Salts

Abstract: Flexible di/trimeric imidazolium salts are used to prepare Xanthene and its derivatives under conventional and solid phase solvent free methods. The imidazolium salts are showed excellent activities even at very low concentration. Solid phase solvent free method is much more effective than the conventional method

Synthesis and characterization of novel dimeric ionic liquids by conventional approaches.

The (1)H-NMR shifts of the imidazolium protons of some novel dimeric ionic liquids were examined in various deuterated solvents. Interactions between the solvent and the imidazolium salt of butyl substituted ionic liquids were observed to give higher chemical shifts than methyl substitution

Synthesis of Triaryl Pyridinium Derivatives under Silica Supported Approach and Their Applications

Substituted triaryl pyridinium salts are synthesized by one pot multiple components reaction under conventional/solid phase routes. Triaryl pyridinium salts showed effective photo responsive properties in alkaline medium. We have examined the catalytic activities of synthesized pyridinium salt for preparation of quinoline and its derivative under conventional/solid supported approach

Synthesis and Characterization of 1,2-Dimethyl Imidazolium Ionic Liquids and Their Catalytic Activities

<div><p></p><p>The synthesis of substituted imidazolium-type ionic liquids via a simple method is described. Our synthesized ionic liquids are more useful in the catalytic behavior of the Mannich reaction.</p></div

Unusual Anisotropic Effects from 1,3-Dipolar Cycloadducts of 4-Azidomethyl Coumarins

4-Bromomethylcoumarins (1) reacted with sodium azide in aqueous acetone to give 4-azidomethyl-coumarins (2), which underwent 1,3-dipolar cycloaddition with acetylenic dipolarophiles to give triazoles (3). These triazoles (3) have been found to exhibit interesting variations in the chemical shifts of C-3-H and C-4-methylene protons. Protonation studies indicate that the shielding effect of the C-3-H of coumarin is due to pi-electrons of the triazole ring, further supported by diffraction and computational studies