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Catal. Sci. Technol., 2017, 7,3008-3016 DOI: 10.1039/C7CY00463J, Paper
Anastasia Rapeyko, Karen S. Arias, Maria J. Climent, Avelino Corma, Sara Iborra Monomers from biomass have been prepared from HMF and methylene active compounds through a one pot process using MIL-100(Fe)/TEMPO/NaNO2 as the catalytic system.
Polymers from biomass: one pot two-step synthesis of furilydenepropanenitrile derivatives with MIL-100(Fe) catalyst
aInstituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, 46022 Valencia, Spain E-mail:email@example.com, firstname.lastname@example.org Fax: (+34) 963877809
Instituto de Tecnologia Quimica UPV-CSIC
Universitat Politècnica de València (UPV)
Valencia Area, Spain
Furilydenepropanenitrile derivatives, which are useful as monomers, have been obtained in high yields by coupling the oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-diformylfuran (DFF) and the Knoevenagel condensation of DFF with methylene active compounds in a one pot process.
The oxidation step was studied using an Fe containing metal–organic framework (MIL-100(Fe), and Fe(BTC)), a Cu containing MOF (Cu3(BTC)2), an Fe exchanged HY zeolite and homogeneous Fe salts in the presence of 2,2,6,6-tetramethylpiperidine-1-oxide (TEMPO) as a cocatalyst, NaNO2 as an additive and oxygen as the terminal oxidant.
The results showed that the synthesized MIL-100(Fe) post treated with NH4F was the most active catalyst achieving 100% HMF conversion with 100% selectivity to DFF and can be reused with good success.
Additionally, the catalytic system has been applied to the oxidation of different primary and secondary alcohols to aldehydes and ketones under mild reaction conditions with good success.
The second step, the Knoevenagel condensation of the obtained DFF with malononitrile or ethyl cyanoacetate, was performed taking advantage of the basicity of the reaction medium.
Catal. Sci. Technol., 2017, 7,2857-2864 DOI: 10.1039/C7CY00832E, Paper
Manoranjan Kumar, Vinod Bhatt, Onkar S. Nayal, Sushila Sharma, Vishal Kumar, Maheshwar S. Thakur, Neeraj Kumar, Rajaram Bal, Bikram Singh, Upendra Sharma Herein, copper iodide nanoparticles (NPs) are reported for the reductive amination of carbonyl compounds for the first time.
bAcademy of Scientific and Innovative Research, Anusandhan Bhawan, 2 Rafi Marg, New Delhi-110001, India
cState Key Laboratory of Elemento-Organic Chemistry, Nankai University, Weijin Road 300 071, Tianjin, China
dRefining Technology Division, CSIR-Indian Institute of Petrolium, Dehradun, India E-mail:email@example.com
Herein, copper iodide nanoparticles (NPs) are reported for the reductive amination of carbonyl compounds for the first time. The generated NPs were characterized by TEM, EDX, XRD and XPS analyses. The XRD patterns, XPS, and EDX analysis confirmed that the resulting NPs were CuI instead of Cu. The TEM images of CuI exhibited the size of monodispersed spherical NPs in the range of 4 ± 2 nm. These generated NPs can be used as versatile heterogeneous catalysts for important organic transformations. As a proof of concept, CuI NPs were successfully applied as heterogeneous catalysts for the synthesis of secondary amines, amides and triazoles. CuI NPs can be easily recovered and recycled up to six times.
PhD Candidate in the Stahl Lab at University of Wisconsin-Madison
Prof. Shannon S. Stahl
Department of Chemistry University of Wisconsin-Madison 1101 University Avenue Madison , Wisconsin 53706 Tel: (608) 265-6288 Fax: (608) 262-6143 firstname.lastname@example.org Room 6132a Chemistry
Heterogeneous catalytic aerobic oxidation methods represent a near-ideal approach for the conversion of primary alcohols to carboxylic acids. Here, we report that a heterogeneous catalyst composed of Pd, Bi, and Te supported on activated carbon is highly effective for the oxidation of diverse benzylic and aliphatic primary alcohols, including 5-(hydroxymethyl)furfural (HMF) and substrates bearing heterocycles and other important functional groups. In many cases, the desired carboxylic acid product is obtained in >90% yield. Additionally, the catalyst has been demonstrated in a continuous-flow packed-bed reactor for the oxidation of benzyl alcohol, achieving near-quantitative yield while undergoing over 30 000 turnovers.