Į-ȕ-Unsaturated carbonyl compounds on condensation with o-phenylenediamine in the presence of catalyst sulfamic acid under solvent free conditions, resulted in the formation of corresponding benzo-[b]-1,4-diazepines in excellent yields.

No abstract

A smooth conversion of substituted 1-(2-hydroxy phenyl)-3-phenyl-1,3-propane diones to flavones has been done using nbutyl-3-methyl-imidazolium tetrafluoroborate ionic liquid.

Recently, the use of ionic liquids (ILs) attracted an increasing interest in the field of organic synthesis because of its mild reaction condition, negligible vapor pressure, solvating ability, and easy recyclability. ILs are used as green reaction media due to their unique chemical and physical properties such as non-volatility, noninflammability, thermal stability, and controlled miscibility. Today, they have a wider scope, playing significant role in reactions as a solvent as well as catalyst. Several reactions have been recently reported using ILs as reaction media and rate enhancers. In chemical and pharmaceutical industries, there is always a demand for