Manganese(III) porphyrin chloride complexes have been developed for the first time as catalysts for the acceptorless dehydrogenative coupling of alcohols and amines. The reaction has been applied to the direct synthesis of imines, tertiary amines and quinolines where only hydrogen gas and/or water are formed as the by‐product(s). The mechanism is believed to involve the formation of a manganese(III) alkoxide complex which degrades into the aldehyde and a manganese(III) hydride species. The latter reacts with the alcohol to form hydrogen gas and thereby regenerates the alkoxide complex.

Preparation and characterization of novel phthalhydrazide-functionalized MCM-41 and its application in the one-pot synthesis of 4-hydroxycoumarin-fused triazolopyrimidines.

Tungstic acid-functionalized MCM-41 (MCM-41–HWO4) was prepared, characterized and applied as a reusable mesoporous catalyst for the one-pot synthesis of new pyrrolo[2,1-a]isoquinoline derivatives.

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A novel, eco‐friendly and fast route has been developed for the synthesis of new and known triazolo[1,5‐a]pyrimidin fused chromone derivatives via a one pot three‐component reaction of 3‐amino‐1,2,4‐triazoles, aromatic aldehydes and 4‐hydroxycoumarin in aqueous medium at room temperature. These reactions are catalyzed by MCM‐41‐HWO4 as a safe and recyclable mesoporous solid acid. It combines successfully the synergistic effect of green chemistry with nanocatalysis. The yields are high and the products were characterized by 1H NMR, 13CNMR spectra and elemental analysis.