Results 31 to 40 of about 3,171 (179)
Advanced Science, EarlyView.Metal‐anode batteries using Li, Na, Mg, and Ca offer exceptionally high energy density, but dendrites, unstable interphases, cracking, and pore formation hinder durability and safety. This review shows how careful electrolyte and interphase design can stabilize these reactive metals.
Jian Pan +3 more
wiley +1 more source
Visible‐Light‐Mediated Lewis Acid‐Catalyzed Diradical Hydrogen Atom Transfer Reaction of Enamides
Advanced Science, EarlyView.The Lewis acid catalysis was crucial for the success of the DHAT reaction of enamides by lowering the energy of the triplet excited state and modulating the reactivity of the formed diradical intermediate in a carbon‐to‐carbon 1,5‐DHAT and consequent cyclization that allows the functionalization of C(sp3)−H bonds to construct a variety of novel β ...
Yao Huang +5 more
wiley +1 more source
Angewandte Chemie, Volume 138, Issue 34, 17 August 2026.π‐Extended COUPY dyes, obtained by vinylogation of coumarin‐based COUPY scaffolds, shift absorption, and emission deep into the NIR region while preserving compactness and synthetic accessibility. These bright, photostable dyes enable live‐cell imaging, FLIM, and site‐specific peptide conjugation, offering a modular platform for targeted bioimaging and
Diego Abad‐Montero +11 more
wiley +2 more sources
Enantioselective Access to Trifluoromethylated Spirocyclopropyl Heterocycles
Advanced Science, EarlyView.We report a rhodium‐catalyzed asymmetric [2+1] spirocyclopropanation of methylene azacycles with trifluoromethyl carbenes in situ derived from fluoroalkyl triftosylhydrazones. ABSTRACT Chiral spirocyclopropyl heterocycles have emerged as privileged three‐dimensional structural motifs in medicinal chemistry.
Yuanhao Zhu +9 more
wiley +1 more source
(3S,5R,6S)-Diphenylmethyl 1-oxo-6-bromopenicillanate
IUCrData, 2020 In the title compound, C21H20BrNO4S, a key intermediate in the synthesis of the widely used β-lactamase inhibitor tazobactam, the five-membered thiazolidine ring adopts an envelope conformation and the four-membered azetidine ring is in a distorted ...
Krishnan Soundararajan +2 more
doaj +1 more source
Tetrahedron Green Chem, 2023 The synthesis of functionalized azetidines from azetines is poorly explored. Here, we report the safe and sustainable continuous flow hydrogenation of 2-azetines using ethyl acetate and CPME as environmentally responsible solvents.
Elena Graziano +6 more
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2022 A convenient and efficient synthesis of novel achiral and chiral heterocyclic amino acid-like building blocks was developed. Regioisomeric methyl 5-(N-Boc-cycloaminyl)-1,2-oxazole-4-carboxylates were prepared by the reaction of β-enamino ketoesters ...
Jolita Bruzgulienė +9 more
doaj +1 more source
N-Benzyl-3,5-dideoxy-3,5-imino-1,2-O-isopropylidene-β-l-lyxofuranose
Acta Crystallographica Section E, 2012 X-ray crystallography confirmed the formation, structure and relative stereochemistry of the title compound, C15H19NO3, which contains a sterically congested four-membered azetidine ring system.
David S. Edgeley +5 more
doaj +1 more source
4-amino-1,8-naphthalimide azetidine fluorescent indicators and cellular imaging agents
Results in ChemistryThree 4-amino-1,8-naphthalimides appended with azetidine and substituted at the imide position with methyl 1, dimethylaminoethylene 2 and methyleneferrocene 3 were synthesised.
Alex D. Johnson +3 more
doaj +1 more source
Synthesis of some azetidonone and 1, 3-oxazepine deritives from thymol [PDF]
مجلة التربية والعلم, 2013 A series of some azetidines -2-one derivative (11-16) have been synthesized by cyclocondensation of various hydrazones derivatives (3-10) with chloroacetyl chloride in the presence of triethylamine. Hydrazones (3-10) were synthesized from the reaction of
A. kh. Ahmad, Linda R. Butti
doaj +1 more source