Adjusting the acidity of sulfonated organocatalyst for the one-pot production of 5-ethoxymethylfurfural from fructose

2019 ◽  
Vol 9 (2) ◽  
pp. 483-492 ◽  
Author(s):  
Jinhang Dai ◽  
Zhongbao Liu ◽  
Yexin Hu ◽  
Shuqing Liu ◽  
Linfeng Chen ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
One Pot ◽  
The One

A novel sulfonated organocatalyst bearing stable double H-bonds shows high catalytic performance and good reusability for the tandem production of 5-ethoxymethylfurfural (EMF), a biofuel candidate, from biomass-derived fructose.

scholarly journals Preparation of Ni-IL/SiO2 and its catalytic performance for one-pot sequential synthesis of 2-propylheptanol from n-valeraldehyde

RSC Advances ◽  
2020 ◽  
Vol 10 (47) ◽  
pp. 28100-28105
Author(s):  
Hualiang An ◽  
Di Wang ◽  
Shuang Miao ◽  
Qiusheng Yang ◽  
Xinqiang Zhao ◽  
...  
Keyword(s):  
Catalytic Performance ◽  
One Pot ◽  
One Pot Synthesis ◽  
The One ◽  
Excellent Catalytic Performance

The prepared Ni-IL/SiO2 catalyst exhibits an excellent catalytic performance in the one-pot synthesis of 2-propylheptanol: the yield of 2-propylheptanol attained 75.4%.

Silica-supported NiO nanocomposites prepared via a sol–gel technique and their excellent catalytic performance for one-pot multicomponent synthesis of benzodiazepine derivatives under microwave irradiation

2017 ◽  
Vol 41 (13) ◽  
pp. 5893-5903 ◽  
Author(s):  
Zeba Nasir ◽  
Abad Ali ◽  
Mohammad Shakir ◽  
Rizwan Wahab ◽  
Shamsuzzaman Shamsuzzaman ◽  
...  
Keyword(s):  
Microwave Irradiation ◽  
Sol Gel ◽  
Catalytic Performance ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Benzodiazepine Derivatives ◽  
Gel Technique ◽  
The One ◽  
Excellent Catalytic Performance

Heterogeneous and versatile NiO–SiO2 NCs were synthesized by a sol–gel technique and used as a catalyst for the one-pot multicomponent synthesis of benzodiazepines.

scholarly journals ZrO2-SBA-15 catalysts for the one-pot cascade synthesis of GVL from furfural

2018 ◽  
Vol 8 (17) ◽  
pp. 4485-4493 ◽  
Author(s):  
J. Iglesias ◽  
J. A. Melero ◽  
G. Morales ◽  
M. Paniagua ◽  
B. Hernández ◽  
...  
Keyword(s):  
Coating Thickness ◽  
Catalytic Performance ◽  
Zirconia Coating ◽  
One Pot ◽  
The One

Controlling the zirconia coating thickness in ZrO2-SBA-15 materials allows tuning their catalytic performance in the one-pot transformation of furfural into GVL.

scholarly journals Recyclable Magnetic Cu/CuFe2O4 Nanocomposites for the Rapid Degradation of 4-NP

Catalysts ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1437
Author(s):  
Hui Zheng ◽  
Jie Huang ◽  
Tianxiang Zhou ◽  
Yumeng Jiang ◽  
Yuhong Jiang ◽  
...  
Keyword(s):  
High Efficiency ◽  
Catalytic Reduction ◽  
Magnetic Measurements ◽  
Catalytic Performance ◽  
Magnetic Saturation ◽  
One Pot ◽  
Synthetic Process ◽  
Catalytic Activities ◽  
Molar Ratios ◽  
The One

Magnetic Cu/CuFe2O4 nanocomposites were prepared by the one-pot thermal decomposition of acetylacetone compounds. Adjusting the molar ratios of Fe to Cu was used to control the content of Cu in the synthetic process. XRD, TEM, XPS and UV-Vis were employed to reveal detailed structural and catalytic activities of Cu/CuFe2O4 nanocomposites. Magnetic measurements demonstrated that Cu/CuFe2O4 nanocomposites possessed a considerable magnetic saturation. Cu/CuFe2O4 nanocomposites showed superb efficiency in the degradation of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP). 4-NP could be reduced by Cu/CuFe2O4 nanocomposites within 40 s in the attendance of NaBH4. Cu nanocrystals played an indispensable rose in the enhancement of catalytic performance. The synergistic effect of Cu and CuFe2O4 nanocrystals achieved the high-efficiency catalytic reduction for 4-NP. After six recycling experiments, the efficiency of Cu/CuFe2O4 nanocomposites was almost stable. Our work advances a straightforward strategy to synthesize efficient and recoverable Cu/CuFe2O4 nanocomposites, which has promising utilizations in the purifying of nitrophenolic contamination.

A Series of Metal-Organic Frameworks for Selective CO2 Capture and Catalytic Oxidative Carboxylation of Olefins

2018 ◽  
Author(s):  
Huong T. D. Nguyen ◽  
Y B. N. Tran ◽  
Hung N. Nguyen ◽  
Tranh C. Nguyen ◽  
Felipe Gándara ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Adsorption ◽  
New Materials ◽  
One Pot ◽  
Acid Gas ◽  
Naphthalene Diimide ◽  
Styrene Carbonate ◽  
Metal Organic ◽  
Adsorption Of Co ◽  
The One

<p>Three novel lanthanide metal˗organic frameworks (Ln-MOFs), namely MOF-590, -591, and -592 were constructed from a naphthalene diimide tetracarboxylic acid. Gas adsorption measurements of MOF-591 and -592 revealed good adsorption of CO<sub>2</sub> (low pressure, at room temperature) and moderate CO<sub>2</sub> selectivity over N<sub>2</sub> and CH<sub>4</sub>. Accordingly, breakthrough measurements were performed on a representative MOF-592, in which the separation of CO<sub>2</sub> from binary mixture containing N<sub>2</sub> and CO<sub>2</sub> was demonstrated without any loss in performance over three consecutive cycles. Moreover, MOF-590, MOF-591, and MOF-592 exhibited catalytic activity in the one-pot synthesis of styrene carbonate from styrene and CO<sub>2</sub> under mild conditions (1 atm CO<sub>2</sub>, 80 °C, and solvent-free). Among the new materials, MOF-590 revealed a remarkable efficiency with exceptional conversion (96%), selectivity (95%), and yield (91%). </p><br>

A Study on the Rearrangement of Dialkyl 1-Aryl-1-hydroxymethylphosphonates to Benzyl Phosphates

2020 ◽  
Vol 24 (4) ◽  
pp. 465-471 ◽  
Author(s):  
Zita Rádai ◽  
Réka Szabó ◽  
Áron Szigetvári ◽  
Nóra Zsuzsa Kiss ◽  
Zoltán Mucsi ◽  
...  
Keyword(s):  
Quantum Chemical ◽  
Room Temperature ◽  
Phase Transfer ◽  
One Pot ◽  
Substrate Dependence ◽  
Triethylbenzylammonium Chloride ◽  
One Step ◽  
The Pudovik Reaction ◽  
The One ◽  
Solid Liquid

The phospha-Brook rearrangement of dialkyl 1-aryl-1-hydroxymethylphosphonates (HPs) to the corresponding benzyl phosphates (BPs) has been elaborated under solid-liquid phase transfer catalytic conditions. The best procedure involved the use of triethylbenzylammonium chloride as the catalyst and Cs2CO3 as the base in acetonitrile as the solvent at room temperature. The substrate dependence of the rearrangement has been studied, and the mechanism of the transformation under discussion was explored by quantum chemical calculations. The key intermediate is an oxaphosphirane. The one-pot version starting with the Pudovik reaction has also been developed. The conditions of this tandem transformation were the same, as those for the one-step HP→BP conversion.

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