Results 91 to 100 of about 13,085 (246)

Efficient solvent-free amide synthesis via Ritter reaction catalyzed by a reusable Fe3O4/g-C3N4/ NTMPA nanocomposite

Scientific Reports
Amide formation through the Ritter reaction remains a valuable transformation in pharmaceutical and materials chemistry, yet conventional protocols rely heavily on corrosive homogeneous acids and non-green conditions.
Haniehsadat Karimitabar, Ali Reza Sardarian   +1 more
doaj   +1 more source

Anomeric Amide Enabled Divergent Synthesis of Unsymmetrical Ureas, Carbamates, Thioesters, and Amides From Aldehydes

Angewandte Chemie International Edition, EarlyView.
An anomeric amide‐enabled divergent aldehyde functionalization sequence provides one‐pot access to unsymmetrical ureas, carbamates, thiocarbamates, thioesters, and amides. Key to this transformation is the formation of N‐Boc‐hydroxamate intermediates, which serve as platforms for orthogonal activation via Lossen‐type rearrangements, single‐electron ...
Jasper L. Tyler, Meiyi Zeng, Julius Wiener, Marie‐Christin Leusmann, Colin Stein, Constantin G. Daniliuc, Frank Glorius   +6 more
wiley   +1 more source

Highly Selective Directed Iridium-Catalyzed Hydrogen Isotope Exchange Reactions of Aliphatic Amides. [PDF]

Angew Chem Int Ed Engl, 2018
Valero M, Weck R, Güssregen S, Atzrodt J, Derdau V.   +4 more
europepmc   +1 more source

Synergistic Effect on Enhanced Oil Recovery in High Salinity Carbonate Reservoirs Using a Novel PEI‐Functionalized Carbon Nanotube Nanocomposite

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Enhancing oil recovery (EOR) in mature reservoirs is hindered by high interfacial tension (IFT) and oil‐wet rock formations, especially under harsh, high‐salinity conditions. This study aims to overcome these limitations by synthesizing a novel carbon nanotube nanocomposite covalently grafted with polyethylenimine and non‐covalently ...
Mohamed Abu Shuheil, Dilipkumar S. Patel, N. Beemkumar, Tariq Abdulkader Alrihaim, Dhirendra Nath Thatoi, Ripendeep Singh, Rohit Kumar, Parminder Singh, Ahmad Khalid   +8 more
wiley   +1 more source

Catalytic ester hydroboration promoted by actinide complexes featuring six-membered N-heterocyclic imine ligands and actinide-alkoxides activation

Communications Chemistry
In the last decade, organoactinide complexes have been active catalysts for the hydroboration of carbonyl moieties, including aldehydes, ketones, amides, isocyanides, and carbonates.
Konstantin Makarov, Natalia Fridman, Moris S. Eisen   +2 more
doaj   +1 more source

Chemoselective formal β-functionalization of substituted aliphatic amides enabled by a facile stereoselective oxidation event. [PDF]

Chem Sci, 2019
Bauer A, Maulide N.
europepmc   +1 more source

Citric‐Acid Polyester‐Modified Melamine–Formaldehyde Resins: Mechanistic Insights and Implications for Greener Decorative Laminates

Journal of Applied Polymer Science, EarlyView.
Driven by the need for more sustainable materials in the laminate industry, poly(glycerol citrate) was introduced as a bio‐based modifier that significantly altered the cure kinetics and structural evolution of melamine–formaldehyde resins. Correlated FTIR, DSC, TGA, and rheological analyses revealed accelerated network formation, enabling lower ...
Martina Duller, Arunjunai Raj Mahendran, Elisabeth Billich, Edith Martha Zikulnig‐Rusch   +3 more
wiley   +1 more source

Mechanistic deconvolution of BSA size variants by constrained Raman pseudo‐Voigt hard modeling during anion‐exchange chromatography

Biotechnology Progress, EarlyView.
Abstract In biopharmaceutical manufacturing, protein aggregation is a critical quality attribute, necessitating rapid and reliable analytical strategies during downstream processes like anion‐exchange chromatography (AEX). While Raman spectroscopy enables continuous monitoring of protein secondary structure, standard data‐driven regression models ...
Jakob Heyer‐Müller, Robin Schiemer, Lars Robbel, Michael Schmitt, Jürgen Hubbuch   +4 more
wiley   +1 more source

Strain Release of 1‐Azabicyclo[1.1.0]butanes as a Gateway to Highly Functionalized Azetidines: New Strategies and Structural Motifs

Chemistry – A European Journal, EarlyView.
Over the past decade, the interest in azetidines has continuously risen, by virtue of their highly appealing pharmaceutical properties. Monocyclic, spirocyclic, and bridged azetidines can be accessed by leveraging 1‐azabicyclo[1.1.0]butanes as precursors.
Yuri Gelato, Philipp Natho, Marco Colella, Renzo Luisi   +3 more
wiley   +1 more source

Late‐Stage Modification of Halotryptophan‐Containing Peptides Via Negishi Cross‐Coupling

Chemistry – A European Journal, EarlyView.
Negishi cross‐coupling provides access to the late‐stage functionalization of bromotryptophan‐containing peptides under comparatively mild conditions and is applicable to a range of peptide substrates in the investigated model systems. The examined alkyl iodides and variation of N‐terminal residues demonstrate the feasibility of the transformation in a
Laura Cerveson, Marcel‐Jannik Heldt, Norbert Sewald   +2 more
wiley   +1 more source