Results 21 to 30 of about 7,765 (231)

Novel Synthesis of 8-Deaza-5,6,7,8-tetrahydroaminopterin Analogues via an Aziridine Intermediate

Molecules, 2012
An efficient method for the construction of the tetrahydrofolate skeleton is described. Starting from pterin analogues and aromatic amines, 8-deaza-5,6,7,8-tetrahydroaminopterin derivatives and the heterocyclic benzoyl isosteres were synthesized via a ...
Zhili Zhang, Chao Li, Ying Guo, Junyi Liu, Xiaowei Wang, Chao Tian, Shouxin Zhou   +6 more
doaj   +1 more source

Inverse Vulcanization Through Epoxide Chemistry: A Low Temperature Non‐Olefin Route to Sulfur‐Rich Polymer Networks

Angewandte Chemie, EarlyView.
Epoxide monomers undergo base‐catalyzed ring‐opening copolymerization with elemental sulfur to afford sulfur‐rich polymers under mild conditions. The resulting materials exhibit excellent mechanical performance, strong adhesion (up to 10 MPa on stainless steel), and outstanding reprocessability.
Pan Yang, Youfu Wang, Xinyuan Zhu, Jinhong Jia, Xiaofeng Wu, Tom Hasell   +5 more
wiley   +2 more sources

A Mononuclear Ruthenium(V)‐Imido Complex With Hydrogen Bonding in the Second Coordination Sphere Forming Aziridines Without N‐Substituents From Alkenes in Water

Angewandte Chemie, EarlyView.
This study employs a RuV═NH complex with hydrogen‐bonding (HB) sites in the SCS to afford non‐N‐substituted aziridines selectively. Nitrogen‐atom transfer occurs from the RuV═NH complex to alkenes in water to produce aziridine derivatives in high yields.
Tomoya Ishizuka, Chisato Ogawa, Yoshihito Shiota, Shunsuke Nozawa, Hiroaki Kotani, Shin‐ichi Adachi, Kazunari Yoshizawa, Takahiko Kojima   +7 more
wiley   +2 more sources

Atom Economical Multi-Substituted Pyrrole Synthesis from Aziridine

Molecules, 2022
Multi-substituted pyrroles are synthesized from regiospecific aziridine ring-opening and subsequent intramolecular cyclization with a carbonyl group at the γ-position in the presence of Lewis acid or protic acid.
Lingamurthy Macha, Ranjith Jala, Sang-Yun Na, Hyun-Joon Ha   +3 more
doaj   +1 more source

Rapid, direct, and sensitive determination of aziridine and 2-chloroethylamine by hydrophilic interaction liquid chromatography-mass spectrometry

MethodsX, 2019
A rapid HILIC-MS method was developed for measuring the genotoxic impurities aziridine and 2-chloroethylamine. Sample preparation was simple and direct without requiring derivatization.
Jonathan G. Shackman
doaj   +1 more source

Aromatic sulphonamides of aziridine-2-carboxylic acid derivatives as novel PDIA1 and PDIA3 inhibitors

Journal of Enzyme Inhibition and Medicinal Chemistry, 2023
In this study, we report a series of newly synthesised sulphonamides of aziridine-2-carboxylic acid (Az-COOH) ester and amide analogues as potent protein disulphide isomerase (PDI, EC 5.3.4.1) inhibitors.
D. Zelencova-Gopejenko, V. Andrianov, I. Domracheva, I. Kanepe-Lapsa, M. Milczarek, M. Stojak, K. Przyborowski, F. A. Fedak, M. Walczak, K. Kramkowski, J. Wietrzyk, S. Chlopicki, I. Kalvins   +12 more
doaj   +1 more source

Aziridine-Functionalized Multiwalled Carbon Nanotubes: Robust and Versatile Catalysts for the Oxygen Reduction Reaction and Knoevenagel Condensation

, 2016
This paper describes the exohedral N-decoration of multiwalled carbon nanotubes (MWCNTs) with NH-aziridine groups via [2 + 1] cycloaddition of a tert-butyl-oxycarbonyl nitrene followed by controlled thermal decomposition of the cyclization product.
Housseinou Ba (1429714), Lapo Luconi (1321926), Dmitry Yakhvarov (1663492), Giuliano Giambastiani (1321920), Giulia Tuci (1321914), Stefano Caporali (1282794), Cuong Pham-Huu (1321932), Andrea Rossin (1321935), Enrico Berretti (3286365), Massimo Innocenti (1321941)   +9 more
core   +1 more source

Aqueous tert-Butyl Hydroperoxide Mediated Regioselective Ring-Opening Reactions of Spiro-aziridine-epoxy Oxindoles: Synthesis of 3‑Peroxy-3-substituted Oxindoles and Their Acid-Mediated Rearrangement

, 2019
A highly efficient regioselective C3-peroxylation of spiro-aziridine and spiro-epoxy oxindoles has been developed with commercially available 70% aqueous tert-butyl hydroperoxide under solvent-free and metal/catalyst-free conditions.
SK Abu Saleh, SK Abu Saleh (5544395), Atanu Hazra, Ananda Shankar Mondal, Saumen Hajra, Saumen Hajra (1393771), Ananda Shankar Mondal (8107103), Atanu Hazra (5842322)   +7 more
core   +1 more source

Access to 2-Fluorinated Aziridine-2-phosphonates from α,α-Halofluorinated β-Iminophosphonates—Spectroscopic and Theoretical Studies

Molecules, 2023
The efficient one-pot halofluorination of a β-enaminophosphonate/β-iminophosphonate tautomeric mixture resulting in α,α-halofluorinated β-iminophosphonates is reported.
Mateusz Klarek, Tomasz Siodła, Tahar Ayad, David Virieux, Magdalena Rapp   +4 more
doaj   +1 more source

Dimerization of Lithiated Terminal Aziridines

Synfacts, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Hodgson, David M., Miles, Steven M.
openaire   +3 more sources