The CoL2@SMNP nanocatalyst catalyzed heterogeneous aerobic oxidation of benzylic C–H bonds of saturated hydrocarbons and alcohols to the related carbonyl compounds.
A cobalt Schiff base complex on TiO2nanoparticles possess excellent photocatalytic properties under visible light for the aerobic benzylic C–H oxidation.
A cobalt Schiff base complex and TiO2 nanoparticles exhibited a synergistic effect on the visible-light photocatalytic activity in the aerobic oxidation of various olefins in the absence of reducing agent.
The cotton-derived nanoalkalinecellulose (NAC) flocculated on the Fe 3 O 4nanoparticles was analytically characterized as Fe 3 O 4 @NAC. With the 1:5.7 weight ratio for organic:inorganic and the base-capacity equal to 7.5 mmol HO À /g, the Fe 3 O 4 @NAC represented a catalytic advantage in the roomtemperature one-pot pseudo-multicomponent synthesis of tetrahydrodipyrazolopyridines (THDPPs) in water. Mechanistic monitoring supported no requisite to acid/base catalyst in the first phase for rapid formation of intermediate 3-methylpyrazolone (A) by Knorr reaction of the ethylacetoacetate with hydrazine hydrate in water at room temperature. Alternatively, Fe 3 O 4 @NAC showed catalytic roles in the further reaction phases in synthesis of THDPPs from the A. Excellent base capacity, hydrogen-bonding performance, and stability due to no significant activity loss and leaching after five reaction cycles are advantages of this organometallic catalyst.
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