A novel CuCl2/BIL catalyst for direct oxidation of alcohol to acid at ambient temperature

Karthikeyan, Parasuraman; Aswar, Sachin Arunrao; Muskawar, Prashant Narayan; Bhagat, Pundlik Rambhau; Senthilkumar, Sellappan

doi:10.1016/j.catcom.2012.05.020

Cited by 24 publications

(6 citation statements)

References 33 publications

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“…With the purpose of direct oxidation of aliphatic and aromatic primary alcohols to carboxylic acids, Kumar et al [27] reported a novel catalytic system based on CuCl 2 and a bifunctional IL (Scheme 1). The ILs [COOHemim]Br and [NH 2 emim] Br were tested in combination with CuCl 2 leading to no reaction, or the formation of the respective aldehyde, in the presence or absence of additional organic solvents.…”

Section: Oxidation Of Alcoholsmentioning

confidence: 99%

Metal-Catalyzed Oxidation of C–X (X = S, O) in Ionic Liquids

Rosatella

Afonso

2013

Ionic Liquids (ILs) in Organometallic Catalysis

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Ionic liquids (ILs) have attracted the scientific community due to several advantages compared with traditional solvents such as their low volatility and high ability to dissolve different organic and inorganic compounds, among other advantages. Transition metals can be toxic compounds; however, this issue can be minimized when used in catalytic amounts which also allows reaction efficiency and selectivity increases. The combination of metal catalysis with the use of ILs can be a powerful tool for several organic reactions, taking advantage of the most attractive property of the ILs, which is the possibility of an easier recycling of the catalytic system, increasing the greenness of the process. The application of ILs in metal-catalyzed oxidation reactions of alcohols and sulfides is discussed in this chapter.

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Section: Oxidation Of Alcoholsmentioning

confidence: 99%

Metal-Catalyzed Oxidation of C–X (X = S, O) in Ionic Liquids

Rosatella

Afonso

2013

Ionic Liquids (ILs) in Organometallic Catalysis

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“…However, all of these methods require toxic reagent, strongly acidic condition, and high temperature. Catalytic oxidation of primary alcohols is one of the most convenient methodology to synthesize the corresponding carboxylic acids,, which has drawn more and more attention in many fine‐chemical and industrial processes. The noble or transition metals are usually used as the catalysts for this selective catalytic oxidation reaction in both homogeneous and heterogeneous reaction system .…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and Phosphorus Co‐Doped Graphene‐Like Carbon Catalyzed Selective Oxidation of Alcohols

Yang

Cao²,

et al. 2019

Asian J Org Chem

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The nitrogen and phosphorus co-doped graphenelike carbon (NPG) is cost-effective fabricated by simple ballmilling and thermal treatment. The as-prepared NPG can be used as a metal-free catalyst for selective catalytic oxidation of aromatic alcohols to their corresponding acids by using TBHP and O 2 as the oxidant in water. It is observed that various aromatic alcohols bearing electron-donating/withdrawing groups can be oxidized to the corresponding acids in excellent yields. No dehalogenation and steric-hindrance effects are detected in this oxidation process. In addition, the NPG catalyst can be easily separated and efficiently reused seven times, showing good recyclability.[a] Prof.for 48 h. At the end of ball milling, oxygen and nitrogen functional groups are introduced by ball milling. The final material is further Soxhlet extracted using 1 M HCl solution to eliminate metallic impurities followed by using deionized water and ethanol washing four times and drying at 80°C in the oven in 8 h.

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“…Ionic liquids contain emerged as a set of green solvents since last decade, with unique properties such as tunable polarity, high thermal stability, and immiscibility with a number of organic solvents, negligible vapor pressure and recyclability [2][3][4][5][6]. Recently, Vasundhara Singh et al was described Biginelli three component reactions under solvent free conditions by both thermally and in microwave conditions using [Bmim]HSO4 as catalyst [7].…”

Section: Introductionmentioning

confidence: 99%

Imidazolium supported iron-chloroglycine complex, a good turnover recyclable catalyst for the solvent free synthesis of 3, 4-dihydropyrimidin-2(1H)-ones – promoted by ultrasound irradiation

et al. 2019

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Abstract. A novel large band gap 1-glycyl-3-methyl imidazolium chloride-iron (III) complex [[Gmim]Cl-Fe(III)] was found to be a heterogeneous catalyst for an efficient and solvent free synthesis of 3,4-dihydropyrimidin-2(1H)-ones by condensation of substituted aldehydes, ethyl acetoacetate and urea (or) thiourea with tremendous yields in high turnover number (4.1X102 to 18.8X102) at ambient temperature using ultrasound irradiation as the activation mode of reaction. This operation formulates very interesting, ecological perspective due to simple reaction condition, isolation and purification of products. In addition, this methodology offers a competitive recyclability of the catalyst without a significant loss of its catalytic activity and could be readily reused, thus making this protocol more environmentally acceptable whilst no catalyst leaching was observed. Resumen. Se descubrió que un complejo novedoso de banda ancha 1-glicil-3-metilimidazolio cloruro de hierro (III) [[Gmim] Cl-Fe (III)] es un catalizador heterogéneo para una síntesis eficiente y libre de solventes de 3,4- dihidropirimidin-2 (1H) -ones por condensación de aldehídos sustituidos, acetoacetato de etilo y tiourea urea (o) con tremendos rendimientos en alto número de recambio (4.1X102 a 18.8X102) a temperatura ambiente mediante irradiación con ultrasonido como modo de activación de reacción. Esta operación formula una perspectiva ecológica muy interesante debido a la condición de reacción simple, el aislamiento y la purificación de los productos. Además, esta metodología ofrece una reciclabilidad competitiva del catalizador sin una pérdida significativa de su actividad catalítica y podría reutilizarse fácilmente, lo que hace que este protocolo sea más aceptable para el medio ambiente sin que se observe lixiviación del catalizador.

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A novel CuCl2/BIL catalyst for direct oxidation of alcohol to acid at ambient temperature

Cited by 24 publications

References 33 publications

Metal-Catalyzed Oxidation of C–X (X = S, O) in Ionic Liquids

Metal-Catalyzed Oxidation of C–X (X = S, O) in Ionic Liquids

Nitrogen and Phosphorus Co‐Doped Graphene‐Like Carbon Catalyzed Selective Oxidation of Alcohols

Imidazolium supported iron-chloroglycine complex, a good turnover recyclable catalyst for the solvent free synthesis of 3, 4-dihydropyrimidin-2(1H)-ones – promoted by ultrasound irradiation

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