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In the presence of a catalytic amount of Fe3O4‐Guanidine acetic acid (GAA) nanoparticles, efficient transamidation of several amides with various amines is described under solvent‐free conditions. Fe3O4‐Guanidine acetic acid nanoparticles provide the first example of a magnetically recoverable organocatalyst for transamidation in the highest catalytic activity. The catalyst could be simply recycled with the assistance of an external magnet and reused for six runs without significant loss of its catalytic activity.

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Copper acetylacetonate and 1-methyl-3-propyl imidazolium chloride immobilized on chitosan magnetic nanoparticlesviacovalent attachment as dual metal–ionic liquid catalyst for selective oxidation of benzyl alcohols under mild and co-catalyst free conditions.

This article is dedicated to the memory of Reza Moradi Alamdar.In this report, a different green method of thioamidation promoted an almost quitted procedure: Willgerodt-Kindler (W-K) reaction. In order to eliminate the major problems in the W-K process: H 2 S releasing and also high-temperature condition, a known Deep Eutectic Solvent (DES) exhibited a solution for such concerns. Use of Glycerol-K 2 CO 3 as a DES (Gly-K 2 CO 3 DES; 10:1 (mL: mmol)) is respect to its basic besides dehumidifying nature. Our next focus dedicated to the synthesis of new derivatives by altering acetophenone (as an alkyl aryl ketones) and secondary-type amines. The efficient and optimized circumstances were assigned 30 min to 5 hours for reaction time and at 808C to 1008C led to 71-88% yields for final thioamides.