Cellulose supported copper nanoparticles as a versatile and efficient catalyst for the protodecarboxylation and oxidative decarboxylation of aromatic acids under microwave heating

Baruah, Diganta; Konwar, Dilip

doi:10.1016/j.catcom.2015.05.029

Cited by 31 publications

(5 citation statements)

References 21 publications

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“…Later on, in 2015, Konwar et al 80 reported a protodecarboxylation of phenylacetic acids 42 to produce the corresponding toluene derivatives 43 in very good yields using cellulose-supported copper nanoparticles as the catalyst without the participation of a base or ligand (Scheme 19a). Additionally, they explored the application of the reaction to oxidative decarboxylation to yield the aromatic aldehydes 44 using oxygen as a terminal oxidant.…”

Section: Transition-metal-catalyzed Decarboxylation Strategiesmentioning

confidence: 99%

Microwave-assisted decarboxylative reactions: advanced strategies for sustainable organic synthesis

et al. 2022

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Section: Transition-metal-catalyzed Decarboxylation Strategiesmentioning

confidence: 99%

Microwave-assisted decarboxylative reactions: advanced strategies for sustainable organic synthesis

et al. 2022

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“…[ 52 ] The metal‐free synthesis of aldehydes and ketones by visible‐light‐promoted oxidative decarboxylation of aryl acetic acids in the air was also reported. [ 53 ] The use of other transition metals such as Hg, [ 54 ] Rh, [ 55 ] Au, [ 56 ] Cu, [ 57 ] Ag, [ 58 ] and so forth for decarboxylation of organic acids is also reported. However, very few reports have been published in the field of oxidative decarboxylation of phenyl acetic acids.…”

Section: Introductionmentioning

confidence: 99%

Silica supported spinel structured cobalt ferrite multifunctional nanocatalyst for hydration of nitriles and oxidative decarboxylation of phenylacetic acids

Hazarika

Borah

2022

Applied Organom Chemis

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The silica‐supported cobalt ferrite spinel nanocatalyst has been successfully synthesized by the coprecipitation method and extensively characterized by FTIR, XRD, SEM‐EDX, TEM, BET, VSM, XPS, TGA, and ICP‐AES analysis. The bands observed at 3435 cm−1 (ν OH of Si‐OH) and 1637 cm−1 (γ OH of Si‐OH) in the FTIR spectrum of the as‐synthesized nanocatalyst unambiguously tell the presence of silica support. Moreover, a very weak intensity and a medium intensity peak at 683 cm−1 and 463 cm−1 suggested intrinsic stretching vibrations of Fe‐O and Co‐O of cobalt ferrite, respectively. The XRD pattern confirms the formation of CoFe2O4 spinel. The average crystallite size was found to be 5.4 nm as calculated by using the Debye–Scherrer equation based on the (220) plane while the average particle size was found to be 5.08 nm from TEM analysis. The crystalline nature of the nanocomposite was confirmed by the SAED pattern. The successful incorporation of CoFe2O4 on the surface of silica was established by the BET surface area measurements. The silica‐supported cobalt ferrite nanocatalyst has been explored as a heterogeneous multifunctional catalyst for hydration of nitriles and oxidative decarboxylation of phenylacetic acids as well under mild reaction conditions with moderate to excellent isolated yield of the desired products (60–99%). The catalyst was magnetically recoverable within a time frame of ~90 s and reusable up to the fifth catalytic cycle without profound loss of activity. A magnetic hysteresis study was performed to elucidate the magnetic behavior of the catalyst. The saturation magnetization value of 39.785 emu/g with a coercivity value of 110.87 Oe and saturation remanence value of 5.185 emu/g clearly indicated the presence of a ferromagnetic component in the material.

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“…The synthesis of carboxylic acid derivatives via malonic ester alkylation, hydrolysis, and subsequent decarboxylation is a well-established method for carboncarbon bond formation [1] [2] [3], and it is one of the most important reactions in organic synthesis. Each of these steps is under constant revision with the aim of developing more efficient procedures in terms of stereocontrol, use of friendly reaction conditions and better yields [4].…”

Section: Introductionmentioning

confidence: 99%

“…The heating time has been reduced to an hour with the use of cumene as a solvent in the presence of catalytic amounts of pyridine [12]. In addition to those reactions a milder copper-catalyzed decarboboxylation of malonic acid derivatives was reported to proceed in acetronitrile at reflux temperature [3].…”

Section: Introductionmentioning

confidence: 99%

Solvent- and Catalyst-Free Microwave-Assisted Decarboxylation of Malonic Acid Derivatives

Cabrera-Rivera¹,

Hernández-Vázquez²,

Flores-Sánchez³

et al. 2017

GSC

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It has been found that microwave assisted decarboxylation of malonic acid derivatives can be achieved under solvent-free and catalyst free conditions. This new method produces the corresponding carboxylic acid in a pure manner and with a high yield in a very short reaction time: 3 -10 min. In general terms, the condition under which this reaction is carried out accelerates the decarboxylation significantly of a series of disubstituted malonic acid derivatives, and makes this new process efficient, easy and environmentally friendly.

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Cellulose supported copper nanoparticles as a versatile and efficient catalyst for the protodecarboxylation and oxidative decarboxylation of aromatic acids under microwave heating

Cited by 31 publications

References 21 publications

Microwave-assisted decarboxylative reactions: advanced strategies for sustainable organic synthesis

Microwave-assisted decarboxylative reactions: advanced strategies for sustainable organic synthesis

Silica supported spinel structured cobalt ferrite multifunctional nanocatalyst for hydration of nitriles and oxidative decarboxylation of phenylacetic acids

Solvent- and Catalyst-Free Microwave-Assisted Decarboxylation of Malonic Acid Derivatives

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