Results 71 to 80 of about 1,978 (203)

Revisiting the Urech Synthesis of Hydantoins: Direct Access to Enantiopure 1,5-Substituted Hydantoins Using Cyanobenziodoxolone

A method for the synthesis of enantiopure 1,5-substituted hydantoins was developed using a hypervalent iodine cyanation reagent (cyanobenziodoxolone, CBX) as a source of electrophilic carbon.
Declas, Nina, Waser, Jerome, Le Vaillant, Franck   +2 more
core   +1 more source

Preparation of Hydantoins by Catalytic Oxidative Carbonylation of α-Amino Amides

, 2016
Hydantoins can be synthesized from the corresponding amino amides employing oxidative catalytic carbonylation using W(CO)6 as the catalyst, I2 as the oxidant, CO as the carbonyl source, and DBU as base.
Lisa McElwee-White (1453750), Delmy J. Díaz (2336692), Seth M. Dumbris (2254165)   +2 more
core   +1 more source

Marked Impact of Regulatory Bans on Formaldehyde and Formaldehyde‐Releaser‐Induced Allergic Contact Dermatitis: A Retrospective Cohort Study (1996–2024) From Turkey

Contact Dermatitis, Volume 94, Issue 5, Page 515-523, May 2026.
The overall prevalence of sensitization to FA/FRs was 1.9% (48/2592). ACD was diagnosed in 37.5% (18/48), comprising non‐occupational ACD (83.3%) and occupational ACD (16.7%). FA 1%–2% aq. failed to detect FR sensitisation in 31.9% (n = 15/47) and FR‐induced ACD in 35.3% (n = 6/17) of patients.
Esen Özkaya, Ömer Mangır, Elizaveta Ayas   +2 more
wiley   +1 more source

RESEARCHES ON HYDANTOINS. SYNTHESIS OF THE SOPORIFIC, 4,4-PHENYLETHYL-HYDANTOIN(NIRVANOL) [PDF]

Journal of the American Chemical Society, 1922
n ...
openaire   +2 more sources

Combinatorial Synthesis of Next Generation Water‐Soluble Quaternized N‐Halamine Oligomers with Long‐Lasting Antiviral Properties

Advanced Functional Materials, Volume 36, Issue 28, 7 April 2026.
A combinatorial library of dual‐functional antiviral oligomers incorporating N‐halamine and quaternary ammonium functionalities is developed for long‐lasting antiviral activity. The lead materials exhibit rapid and durable antiviral activity against SARS‐CoV‐2 variants and influenza H1N1, with 4 to 5 log reduction in viral copies at 5 mg mL−1 ...
Eid Nassar‐Marjiya, Konda Reddy Kunduru, Krishanu Ghosal, Luna Rizik, Nofar Atari, Mahran Daifa, Neta Kutner, Bassma Khamaisi, Qi Wu, Simran Jindal, Merna Shaheen‐Mualim, Ranabir Majumder, Mahitosh Mandal, Michal Mandelboim, Shady Farah   +14 more
wiley   +1 more source

Visible‐Light Mediated Functionalization in Phe‐Containing Peptides Upon a Debenzylative Amination Process

Advanced Synthesis &Catalysis, Volume 368, Issue 6, 17 March 2026.
Selective late‐stage modification of N‐terminal phenylalanine short peptides is achived by visible‐light initiated reaction with N‐iodoimides in a debenzylation–amination process. This metal‐free method permits the incorporation of N‐containing heterocycles into the α‐position of the peptide backbone.
Guillermo Morales‐Ortega, Iván Pérez‐Cubero, Enrique Gómez‐Bengoa, Arkaitz Correa, Javier Carreras   +4 more
wiley   +1 more source

Bioactive Hydantoin Alkaloids from the Red Sea Marine Sponge Hemimycale arabica

Marine Drugs, 2015
In the course of our continuing efforts to identify bioactive secondary metabolites from Red Sea marine invertebrates, we have investigated the sponge Hemimycale arabica.
Diaa T. A. Youssef, Lamiaa A. Shaala, Khalid Z. Alshali   +2 more
doaj   +1 more source

Mechanochemical Preparation of Hydantoins from Amino Esters: Application to the Synthesis of the Antiepileptic Drug Phenytoin

, 2014
International audienceThe eco-friendly preparation of 5- and 5,5-disubstituted hydantoins from various amino ester hydrochlorides and potassium cyanate in a planetary ball-mill is described.
Colacino, Evelina, Lamaty, Frédéric, Konnert, Laure, Martinez, Jean, Reneaud, Benjamin, Campagne, Jean-Marc, Marcia de Figueiredo, Renata   +6 more
core   +1 more source

Synthesis of Peptides, Peptide Nucleic Acid Components, and Other Biogenic Compounds From a Three‐Component Prebiotic Mixture

Chemistry – A European Journal, Volume 32, Issue 9, 2 March 2026.
High‐energy proton irradiation of a formamide–diaminomaleonitrile–glycine system in the presence of meteorites produces a broad spectrum of biogenic compounds, including nucleobases, nucleosides, peptides, and nucleobase–peptide conjugates, highlighting a chemically plausible prebiotic network.
Bruno Mattia Bizzarri, Rosangela Santalucia, Eleonora Mancin, Mikhail Kapralov, Eugene Krasavin, Raffaele Saladino, Ernesto Di Mauro   +6 more
wiley   +1 more source

Prediction of Performance of the Moving-Bed Biofilm Pilot Reactor Using Back-Propagation Artificial Neural Network (BP-ANN)

Chemical Engineering Transactions, 2017
Coal gasification stripped gas liquor (CGSGL) wastewater contains large quantities of complex organic and inorganic pollutants which include phenols, ammonia, hydantoins, furans, indoles, pyridines, phthalates and other monocyclic and polycyclic nitrogen
E.M.E. Rava, E.M.N. Chirwa
doaj   +1 more source