Results 11 to 20 of about 1,457 (209)

Homogeneous Metal-Catalyzed Hydrogenation of CO₂ Derivatives: Towards Indirect Conversion of CO₂ to Methanol

Inorganics, 2023
The increase in anthropogenic CO2 concentrations and associated environmental issues have demanded the development of technologies for CO2 utilization.
Tolganay Andizhanova, Aziza Adilkhanova, Andrey Y. Khalimon   +2 more
doaj   +1 more source

From amines to (form)amides: a simple and successful mechanochemical approach

Beilstein Journal of Organic Chemistry, 2022
Two easily accessible routes for preparing an array of formylated and acetylated amines under mechanochemical conditions are presented. The two methodologies exhibit complementary features as they enable the derivatization of aliphatic and aromatic ...
Federico Casti, Rita Mocci, Andrea Porcheddu   +2 more
doaj   +1 more source

Ultrasound-mediated radical cascade reactions: Fast synthesis of functionalized indolines from 2-(((N-aryl)amino)methyl)acrylates

Ultrasonics Sonochemistry, 2021
Novel functionalized indolines were synthesized from 2-(((N-aryl)amino)methyl)acrylates and formamides under ultrasonic irradiation for the first time. Aiming to develop a straightforward and easy-to-implement methodology for the synthesis of indolines ...
Milene M. Hornink, Vinicius R. Nascimento, Julia L. Couto, Caroline S. Santos, Leandro H. Andrade   +4 more
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Cationic quaternary ammonium-stabilized Nb oxoclusters catalyze reductive amination of carbon dioxide with hydrosilane

Green Chemical Engineering, 2022
The N-formylation of amines with CO2 and hydrosilanes is an emerging yet important reaction in fine chemical industry. Herein, we have reported a methyltrioctylammonium cation (TOMA) stabilized Nb oxocluster catalyst that can effectively realize two ...
Yuan Ma, Xinjian Wei, Jian Fang, Qingpo Peng, Wen Xu, Zhenshan Hou   +5 more
doaj   +1 more source

Formylation of Amines

Molecules, 2014
Methods to convert amines to formamides are of interest due to the many uses of formamides as synthetic intermediates. These methods include stoichiometric reactions of formylating reagents and catalytic reactions with CO as the carbonyl source.
Ciera J. Gerack, Lisa McElwee-White
doaj   +1 more source

An Efficient Method for the Preparation of N-Formamides using Propylphosphonic Anhydride (T3P®)

SynOpen, 2018
The synthesis of N-formamides from aromatic amines and formic acid using propylphosphonic anhydride (T3P®) as a green coupling reagent is described. By using this method, aryl, heteroaryl and fluorinated aryl-containing formamides were synthesized in ...
Venu Kandula, Ramakrishna Gudipati, Anindita Chatterjee, Satyanarayana Yennam, Manoranjan Behera   +4 more
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Ni-catalyzed benzylic β-C(sp3)–H bond activation of formamides

Nature Communications, 2022
The development of 3d-metal-catalyzed β-C–H bond activation via 4-membered metallacycles remains an elusive challenge. Here, the authors report a Ni-Al bimetal-catalyzed β-C(sp3)–H bond activation of formamides via 4-membered nickelacycles.
Rong-Hua Wang, Wei-Wei Xu, Hongli Wu, Yue Li, Jiang-Fei Li, Tao Zhang, Genping Huang, Mengchun Ye   +7 more
doaj   +1 more source

Catalytic Performance of Immobilized Sulfuric Acid on Silica Gel for N-Formylation of Amines with Triethyl Orthoformate

Molecules, 2022
In the search for convenient, green, and practical catalytic methods for the current interest in organic synthesis, a simple, green, and highly efficient protocol for N-formylation of various amines was carried out in the presence of immobilized sulfuric
Sodeeq Aderotimi Salami, Xavier Siwe-Noundou, Rui W. M. Krause   +2 more
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Determination of protonation constants and structural correlations for some tertiary formamides and acetamides in sulfuric acid with UV spectroscopy

Macedonian Journal of Chemistry and Chemical Engineering, 2015
The protonation of ten aliphatic amides in sulfuric acid media was studied by UV spectroscopy. The pKBH+ values and solvation parameters were calculated using Yates and McClelland Method, Excess Acidity Method and Bunnett and Olsen Method.
Goran Stojković, Elizabeta Dimitrieska-Stojković, Emil Popovski   +2 more
doaj   +1 more source

Synthesis of MAPA Reagents and 2-Alkyl(aryl)aminopyridines from 2-Bromopyridine Using the Goldberg Reaction

Molecules, 2022
A short and economical synthesis of various 2-methylaminopyidine amides (MAPA) from 2-bromopyridine has been developed using the catalytic Goldberg reaction.
Daniel L. Comins
doaj   +1 more source