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A mixture of two ionic liquids have been used for a green synthesis of 3,4,6-triarylpyridazine in high yield and at room temperature. The two ionic liquids acts in tandem. The advantage of this method is a room temperature synthesis of the target compounds using green methodology. Product recovery is simple and the mixture of ionic liquids can be recovered and recycled.

2-Hydroxy-6-methylhept-5-ene (I) reacts with salicylaldehydes (II), (IV), and (VI) under TfOH-catalysis to the pyrano[3.2-c]chromenes (III), (V), and (VII) in good yields and with high diastereoselectivities.

Diethylammonium hydrogensulfate as an ionic liquid catalyst in the microwave-assisted one-pot three-component reaction between arylamines (I), benzaldehydes (II) or (V) and phenylhydrazine (III) furnishes the formazans (IV) and (VI) in highs yield following a volatile-organic-compound- and solvent-free green protocol.

Among three ionic liquids tested, propylammoniumhydrogensulfate is found to be the most efficient promoter for the synthesis of title compounds (III), (V), and (VI).

Aromate exchange resin prepared by a simple elution technique and used for the biphasic oxidation of alcohols and benzyi halides to corresponding carbonyl compounds.

Aryl/alkyl(2,2′-bis-3-methylindolyl)methanes and aryl(bis-3,3′-indolyl)methanes are synthesized in high yield using ionic liquids mediated by microwave. Reaction conditions and product recovery are simple and ionic liquids could be recycled.

The catalyst (no details given) can be successfully used for the regeneration of aldehydes and ketones.

Cyclodehydration-condensation of hippuric acid and arylaldehydes have been carried out using a 1:1 mixture of Al2O3-H3BO3 in the presence of stoichiometric quantity of acetic anhydride to give the target compound in good yield. This procedure can be used to synthesize the 4-alkylidene analogs also.

Bromate exchange resin has been prepared by a simple elution technique and used for the oxidation of aromatic aldehydes to the carboxylic acids. Oxidation is carried out under biphasic condition. Work up is simple. Resin immobilized bromate ions have been used for the first time as an oxidizing agent in organic synthesis.

An alumina-supported reagent has been prepared to synthesize the t-butyl esters from t-butanol. The method requires less time, mild conditions, and involves simplified work-up. Yield of the products is also high.

Quaternary ammonium bromate have been prepared from the corresponding bromide and used as a mild and efficient oxidizing agent for the aromatization of Hantzsch esters and related compounds to pyridinc derivatives.

A simple solvent-free microwave mediated procedure for the selective protection of aldehydes by conversion to their 1,1-diacetates is reported. The resultant diacetates were deprotected to generate the aldehyde using aqueous formic acid in the presence of a surfactant in high yield.

Bromate exchange resin (BRER) prepared by a simple elution technique has been used for deoximation of oximes to the corresponding carbonyl compounds in good yields in biphasic condition.

Tetra-n-alkylammonium bromates were prepared from the corresponding bromides for the first time and were used for deoximation of oximes to the corresponding carbonyl compounds.

Tetra‐n‐propyl and tetra‐n‐butylammonium bromates were used for the oxidation of a variety of aromatic amines to nitro compounds. Reaction condition and recovery simple and yield of products high.

Tetra-n-alkyl ammonium bromates were prepared for the first time by a simple procedure from the corresponding bromides and used as primary oxidants for the oxidation of alcohols to carbonyl compounds. Reaction conditions are simple and products are obtained in high yields.