Modelling kinetics and deactivation for the selective hydrogenation of an aromatic ketone over Pd/SiO2

2007 ◽  
Vol 62 (18-20) ◽  
pp. 5322-5329 ◽  
Author(s):  
Nakul Thakar ◽  
Rob J. Berger ◽  
Freek Kapteijn ◽  
Jacob A. Moulijn
Keyword(s):  
Selective Hydrogenation ◽  
Aromatic Ketone

Selective Hydrogenation of Aromatic Ketone over Pt@Y Zeolite through Restricted Adsorption Conformation of Reactants by Zeolitic Micropores

ChemCatChem ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1948-1952 ◽  
Author(s):  
Qiang Chen ◽  
Haozhe Kang ◽  
Xuan Liu ◽  
Kun Jiang ◽  
Yunfei Bi ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Aromatic Ketone ◽  
Y Zeolite

Selective Hydrogenation of Benzene to Cyclohexene over Ru-Zn Catalyst with Nanosized Zirconia as Dispersant

2010 ◽  
Vol 31 (2) ◽  
pp. 150-152
Author(s):  
Zhongyi LIU ◽  
Haijie SUN ◽  
Dongbin WANG ◽  
Wei GUO ◽  
Xiaoli ZHOU ◽  
...  
Keyword(s):  
Selective Hydrogenation

Selective Hydrogenation of Crotonaldehyde over Pt/Ce0.8La0.2O1.9 Catalysts

2011 ◽  
Vol 32 (3) ◽  
pp. 513-519
Author(s):  
Ping CHEN ◽  
Guanqun XIE ◽  
Haiying ZHENG ◽  
Lin ZHU ◽  
Mengfei LUO
Keyword(s):  
Selective Hydrogenation

Effects of Reduction Temperature on Selective Hydrogenation of Crotonalde-hyde over Ir/ZrO2 Catalyst

2013 ◽  
Vol 33 (2) ◽  
pp. 348-353
Author(s):  
Lin ZHU ◽  
Jiqing LU ◽  
Guanqun XIE ◽  
Ping CHEN ◽  
Mengfei LUO
Keyword(s):  
Selective Hydrogenation ◽  
Reduction Temperature

A Facile One-pot Synthesis of Substituted Quinolines via Cascade Friedlander Reaction from Isoxazoles with Ammonium Formate-Pd/C and Ketones

2020 ◽  
Vol 17 (3) ◽  
pp. 211-215
Author(s):  
Da Chen ◽  
Xuan Wang ◽  
Runnan Wang ◽  
Yao Zhan ◽  
Xiaohan Peng ◽  
...  
Keyword(s):  
Hydrogen Transfer ◽  
Ammonium Formate ◽  
Aromatic Ketone ◽  
Reaction Conditions ◽  
One Pot ◽  
Diverse Range ◽  
Strong Base ◽  
Aromatic Ketones ◽  
Substituted Quinolines ◽  
New Strategy

The Friedlander reaction is the most commonly used method to synthesis substituted quinolines, the essential intermediates in the medicine industry. A facile one-pot approach for synthesizing substituted quinolines by the reaction of isoxazoles, ammonium formate-Pd/C, concentrated sulfuric acid, methanol and ketones using Friedlander reaction conditions is reported. Procedures for the synthesis of quinoline derivatives were optimized, and the yield was up to 90.4%. The yield of aromatic ketones bearing electron-withdrawing groups was better than the ones with electron-donating substituents. The structures of eight substituted quinolines were characterized by MS, IR, H-NMR and 13CNMR, which were in agreement with the expected structures. The mechanism for the conversion was proposed, which involved the Pd/C catalytic hydrogen transfer reduction of unsaturated five-membered ring of isoxazole to produce ortho-amino aromatic ketones. Then the nucleophilic addition of with carbonyl of the ketones generated Schiff base in situ, which underwent an intermolecular aldol reaction followed by the elimination of H2O to give production of substituted quinolines. This new strategy can be readily applied for the construction of quinolines utilizing a diverse range of ketones and avoids the post-reaction separation of the o-amino aromatic ketone compounds. The conventionally used o-amino aromatic ketone compounds in Friedlander reaction to prepare substituted quinoline are laborious to synthesize and are apt to self-polymerize. While oxazole adopted in this work can be prepared at ease by the condensation of benzoacetonitrile and nitrobenzene derivatives under the catalysis of a strong base. Moreover, the key features of this protocol are readily available starting materials, excellent functional group tolerance, mild reaction conditions, operational simplicity, and feasibility for scaling up.

Effects of impregnation solvent and reduction temperature on the catalytic performance of Pd/Al2O3 in the selective hydrogenation of 1,3-butadiene

2011 ◽  
Vol 103 (2) ◽  
pp. 405-417 ◽  
Author(s):  
Kanda Pattamakomsan ◽  
Francisco Jose Cadete Santos Aires ◽  
Kongkiate Suriye ◽  
Joongjai Panpranot
Keyword(s):  
Selective Hydrogenation ◽  
Catalytic Performance ◽  
Reduction Temperature

Surface Molecule Manipulated Pt/TiO2 Catalysts for Selective Hydrogenation of Cinnamaldehyde

2021 ◽  
Author(s):  
Ran Tao ◽  
Bing-Qian Shan ◽  
Hao-Di Sun ◽  
Meng Ding ◽  
Qing-Song Xue ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Surface Molecule
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