Results 41 to 50 of about 6,752 (176)

Lightening Diazo Compounds? [PDF]

open access: yesACS Sustainable Chemistry & Engineering, 2021
Jakub Durka   +2 more
openaire   +1 more source

Synthesis and characterization of mixed Amides-Imines and Amides-Azo Compound derived from Chrysanthemic acid and trimethoprim and study their biological activities [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2017
Chrysanthemic acid, Trimethoprim, amides, Imines and azo compound : all found to have enormous biological activities in different directions such as medical , pharmaceutical pesticidal …etc.
Mohammad F. Mesher   +2 more
doaj   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

open access: yesChemistry – A European Journal, EarlyView.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve   +4 more
wiley   +1 more source

Photochemistry of Aromatic N‐Oxides in Water Probed by Time‐Resolved X‐ray Absorption Spectroscopy

open access: yesChemistry – A European Journal, EarlyView.
Time‐resolved XAS at the nitrogen and oxygen K‐edges is applied to the photorearrangement of two N‐oxides in water. Pyridine N‐oxide rapidly forms the oxaziridine isomer. Pyridazine N‐oxide undergoes ring opening to the diazo compound, without any evidence of intermediates.
Maximilian Paradiz Domínguez   +3 more
wiley   +1 more source

Photo-cycloaddition reactions of vinyldiazo compounds

open access: yesNature Communications
Heterocyclic rings are important structural scaffolds encountered in both natural and synthetic compounds, and their biological activity often depends on these motifs.
Ming Bao   +5 more
doaj   +1 more source

diazo compounds

open access: yes, 2019
Citation: 'diazo compounds' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.D01691 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

It's a Gas: Bioconjugation With Vapor‐Phase Reagents

open access: yesChemistry – A European Journal, EarlyView.
Gaseous reagents are an emerging class of bioconjugation reagents that can offer alternative selectivity paradigms for the construction of precise bioconjugates. A variety of both inert and highly reactive gases have recently been developed for bioconjugation use.
Yuxuan Ding, Jun Ohata, Zachary T. Ball
wiley   +1 more source

On the strong difference in reactivity of acyclic and cyclic diazodiketones with thioketones: experimental results and quantum-chemical interpretation

open access: yesBeilstein Journal of Organic Chemistry, 2015
The 1,3-dipolar cycloaddition of acyclic 2-diazo-1,3-dicarbonyl compounds (DDC) and thioketones preferably occurs with Z,E-conformers and leads to the formation of transient thiocarbonyl ylides in two stages.
Andrey S. Mereshchenko   +5 more
doaj   +1 more source

Cyclopropanation using flow-generated diazo compounds

open access: yesOrganic & Biomolecular Chemistry, 2015
A practical and mild protocol for the cyclopropanation of unstabilised diazo compounds is reported.
Roda, Nuria M   +6 more
openaire   +3 more sources

Hypervalent Iodine‐Mediated Synthesis of Sulfones Using Organozinc Pivalates and Sulfinate Salts

open access: yesEuropean Journal of Organic Chemistry, EarlyView.
A general protocol for sulfone synthesis via sulfonyl‐containing hypervalent iodine reagents and organozinc pivalates is described. The method is practical, provides a broad scope of sulfone in moderate to high yield. bicyclo[1.1.1]pentane‐sulfones are also disclosed and a one‐pot synthesis of Diels–Alder adduct is presented. Sulfones are key motifs in
José C. Cunha   +4 more
wiley   +1 more source

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