SnO nanoparticles: a robust and reusable heterogeneous catalyst for the synthesis of 3,4,5-substituted furan-2(5H)-ones

Abstract

SnO nanoparticles as an efficient and recyclable catalyst have been successfully prepared and were used as a heterogeneous catalyst for the one-pot synthesis of 3,4,5-substituted furan-2(5H)-ones by the three-component reaction of aniline derivatives, dialkyl acetylene dicarboxylate, and aromatic aldehydes in ethanolic medium at room temperature. This work consistently has the advantages of excellent yields, short reaction time, simple workup, and recyclability of the catalyst up to six runs without appreciable loss of activity.

Trans‐metallated chlorophyllin by copper supported on silica‐coated magnetic nanoparticles as an efficient and green catalyst for the synthesis of furan‐2(5H)‐ones

“…These observations led to the proposal of a mechanism depicted in Scheme 4 [23]. The first step deals with the formation of β‐enaminone (I) in a Michael addition of aromatic amines to the DMAD.…”

“…In 2009, during the first attempts, furan‐2(5 H )‐one derivatives were synthesized using cyclodextrin as the catalyst [14]. Various synthetic and bio‐based catalysts were reported to be suitable for synthesizing furan‐2(5 H )‐one derivatives, including metal salts [22], metal oxides [23], zeolites [24], ionic liquids [25], vitamin B12 [26], and organic and inorganic acids [27, 28]. The synthesis of these materials is very important.…”

Multi-Component Syntheses of Spiro[furan-2,3′-indoline]-3-carboxylate Derivatives Using Ionic Liquid Catalysts

“…Another simple strategy for the synthesis of such furan-2(5 H )-one cores is a three-component reaction using acetylene carboxylates, anilines, and carbonyl compounds [ 9 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 ]. Various materials have been used as catalysts for these kinds of transformations.…”

Nano crystalline ZnO catalyzed one pot three-component synthesis of 7-alkyl-6H,7H- naphtho[1',2':5,6]pyrano[3,2-c] chromen-6-ones under solvent-free conditions

“…Ideally, introducing neat processes and utilizing eco-friendly and green catalysts, which can be simply recycled at the end of the reaction has received significant attention in recent years. Nanoparticle metal oxides have these advantages and widely used as effective catalysts in many organic reactions due to their high surface-to-volume ratio and easy recovery and simple recycling without losing their activity [29][30][31]. Recently, zinc oxide (ZnO) nanoparticles (NPs) have been reported as catalysts [32], antibacterial substances [33], sensors [34], luminescent materials [35] and photocatalysts [36].…”