Unravelling the catalytic potential of a magnetic CoFe₂O₄/Cu–ABDC MOF composite in the sustainable synthesis of 2H-indazole motifs

Abstract

Incessant advancements made in catalytic processes during the past few decades prompted researchers to design prodigious sustainable materials that lie within the domain of green synthesis. Within this perspective,...

Advanced metal oxide-based nanocatalysts for the oxidative synthesis of fine chemicals

“…Nanostructured spinel oxide materials have gained significant attention not only in the field of materials science but also as heterogeneous catalysts because of their intriguing magnetic and optical properties. [152][153][154][155][156] It is worth mentioning here that Vijaya and co-workers synthesized a CoAl 2 O 4 normal spinel structure in which Co 2+ is accommodated in the tetrahedral sites, while Al 3+ occupies the octahedral positions. 157 For comparative analysis, CoAl 2 O 4 nanoparticles were prepared using both conventional hydrothermal treatment and microwave-assisted technique utilizing Sesamum (S. indicum L.) plant extract as the reducing and stabilizing agent.…”

Insights into the catalytic potential of a rationally designed magnetic boron nitride nanosheet supported nickel catalyst for the efficient synthesis of 1,4-dihydropyridines

“…To date, several synthetic approaches for the synthesis of polyhydroquinolines have been reported but due to considerable shortcomings manifested by these protocols, such as prolonged reaction times, acidic or basic conditions, tedious experimental procedures, use of expensive metal salts, etc., [23][24][25][26][27][28][29][30][31][32] we focused our research towards the development of an alternative milder strategy via designing a magnetically incorporated h-BN nanosheet based catalytic system that surpasses the aforesaid issues remarkably. Impressed by the immense benefits governed by surface engineered h-BN nanocomposites and our on-going laboratory work, [33][34][35][36][37][38][39][40][41] we herein demonstrate the fabrication of a novel h-BN@Fe 3 O 4 @APTES@TPC@Ni catalyst and its utility in the multicomponent coupling of aldehydes, dimedone, ethyl acetoacetate and ammonium acetate to access the respective 1,4-dihydropyridines of biological importance. Such recyclable heterogeneous supported nanocatalysts have been grabbing the attention of the scientific community for years to deliver diverse heterocyclic organic products at the industrial scale.…”

Preparation and characterization of theh-BN/Fe3O4/APTES-AMF/CuIInanocomposite as a new and efficient catalyst for the one-pot three-component synthesis of 2-amino-4-aryl(or heteroaryl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4H-chromene-3-carbonitriles

“…[58][59][60][61][62][63][64][65] Thus, the development of a more proficient route towards the synthesis of heterocyclic 2-amino-4-aryl(or heteroaryl)-7,7-dimethyl-5-oxo-5,6,7,8-tetrahydro-4Hchromene-3-carbonitriles need to be adopted in order to surpass the aforementioned limitations. Inspired by our continuing research innovations towards the development of hybrid organic-inorganic nanomaterials, [66][67][68][69] we herein executed an idea of synthesizing novel magnetically retrievable hexagonal boron nitride nanosheets supported copper catalytic system (h-BN/Fe 3 O 4 /APTES-AMF/Cu II ) through an operationally-facile covalent approach, wherein copper was chosen as a metallic entity to facilitate the reaction due to its low cost, non-toxicity, earth-abundance and high catalytic activity. Moreover, the high boiling point of copper makes it a stupendous candidate to catalyze high-temperature reactions.…”