Synthesis of Urea Derivatives from CO2 and Silylamines

M Xu, AR Jupp, MSE Ong, KI Burton… - Angewandte …, 2019 - Wiley Online Library
A series of thirty‐three N, N′‐diaryl, dialkyl, and alkyl‐aryl ureas have been prepared in
pyridine or toluene by reaction of silylamines with CO2. This protocol is shown to provide …

Stoichiometric Reactions of CO2 and Indium‐Silylamides and Catalytic Synthesis of Ureas

M Xu, AR Jupp, DW Stephan - … Chemie International Edition, 2017 - Wiley Online Library
The indium compounds In (N (SiMe3) 2) 2Cl⋅ THF (2) and In (N (SiMe3) 2) Cl2⋅(THF) n (3)
were shown to react with CO2 to give [(Me3Si) 2N) InX (μ‐OSiMe3)] 2 (X= N (SiMe3) 2 4, Cl …

Sulfated polyborate-catalyzed efficient and expeditious synthesis of (un) symmetrical ureas and benzimidazolones

DS Rekunge, CK Khatri, GU Chaturbhuj - Tetrahedron Letters, 2017 - Elsevier
The excellent catalytic potential of sulfated polyborate is utilized in the synthesis of (un)
symmetrical ureas and benzimidazolones by heating amines or substituted OPDA and urea …

One-pot telescoped synthesis of thiazole derivatives from β-keto esters and thioureas promoted by tribromoisocyanuric acid

VSC de Andrade, MCS de Mattos - Synthesis, 2018 - thieme-connect.com
A simple and efficient one-pot protocol has been developed for the synthesis of thiazole
derivatives from readily available starting materials. Tribromoisocyanuric acid was …

Theoretical Study on the Synthesis of Urea by Electrochemical Nitrate and Carbon Dioxide over COF Series Catalysts

Y Hou, L Guo - Catalysis Surveys from Asia, 2024 - Springer
Catalytic synthesis of urea is a bright substitutable to Haber–Bosch progression and
industrial urea synthesis. Electrochemical C–N coupling of carbon dioxide and nitrogen …

A practically simple, catalyst free and scalable synthesis of N-substituted ureas in water

L Tiwari, V Kumar, B Kumar, D Mahajan - RSC advances, 2018 - pubs.rsc.org
A practically simple, mild and efficient method is developed for the synthesis of N-substituted
ureas by nucleophilic addition of amines to potassium isocyanate in water without organic …

Iodine-mediated aryl transfer reaction from arylhydrazine hydrochlorides to nitriles

Z Zhang, X Li, Y Li, Y Guo, X Zhao, Y Yan, K Sun… - Tetrahedron, 2019 - Elsevier
Abstract An iodine-promoted, metal-, base-, and solvent-free cross-coupling reaction was
developed for the synthesis of various useful secondary amides via an aryl N-addition …

Palladium‐Catalyzed Synthesis of Symmetrical and Unsymmetrical Ureas Using Chromium Hexacarbonyl as a Convenient and Safe Alternative Carbonyl Source

M Mozaffari, N Nowrouzi - European Journal of Organic …, 2019 - Wiley Online Library
Pd‐catalyzed synthesis of urea derivatives from aryl iodides and different aliphatic and
aromatic amines using sodium azide and chromium hexacarbonyl is described. In this …

Theoretical Study on Urea Synthesis from N2 and CO2 Catalyzed by Electrochemical Tandem Catalysis of CCFs Materials

Y Hou, L Guo, F Luo - Catalysis Surveys from Asia, 2023 - Springer
On account of the activation of N2 and the high-energy barrier of the competitive hydrogen
evolution reaction (HER), problems such as low Faraday efficiency, low urea yield, and slow …

Efficient direct halogenation of unsymmetrical N-benzyl-and N-phenylureas with trihaloisocyanuric acids

CM Sanabria, BBS Costa, GM Viana… - …, 2018 - thieme-connect.com
A simple and efficient methodology for the direct halogenation of N-phenylureas was
developed using trihaloisocyanuric acids in acetonitrile at room temperature. This protocol …