Results 51 to 60 of about 2,971,196 (335)

Ethyl 5-(4-Bromophenyl)-4-methyl-1H-pyrrole-2-carboxylate

open access: yesMolbank, 2017
This note describes a sequence converting an oxime-substituted pyrrolidine into a trisubstituted pyrrole structure. The synthetic route is based on a double chlorination of the pyrrolidine substrate followed by the base induced formation of both an imine
Marcus Baumann, Ian R. Baxendale
doaj   +1 more source

1,3-Dipolar cycloadditions of acridine with nitrile oxides [PDF]

open access: yesArkivoc, 2002
Siteand regio-isomeric mono-cycloadducts 9 are formed in the reactions of mesito1b and dichloromesitonitrile oxide 1c with acridine 6 in a 1:2 ratio, while the reaction of 1b and 6 in a 10:1 ratio afforded, besides the mono-cycloadduct 9b and traces of the corresponding oxime 10b, the bis-cycloadduct 12 with the opposite regiochemistry to that of the ...
CORSARO, Antonino   +5 more
openaire   +6 more sources

Ionic Metal Poly(heptazine Imides) and Single‐Atoms Interplay: Engineered Stability and Performance for Photocatalysis, Photoelectrocatalysis and Organic Synthesis

open access: yesAdvanced Functional Materials, EarlyView.
Poly(heptazine) imides (PHIs), a crystalline carbon nitride subclass, intercalate metals to deliver high stability, tunable electronics, and efficient charge separation. These features enable solar‐driven applications such as hydrogen evolution, CO₂ reduction, and organic synthesis.
Gabriel A. A. Diab   +6 more
wiley   +1 more source

The rapid generation of isothiocyanates in flow

open access: yesBeilstein Journal of Organic Chemistry, 2013
Isothiocyanates are versatile starting materials for a wide range of chemical reactions. However, their high nucleophilic susceptibility means they are best prepared and used immediately.
Marcus Baumann, Ian R. Baxendale
doaj   +1 more source

Synthesis, Antimicrobial and Antioxidant Activities of 2-Isoxazoline Derivatives

open access: yesMolecules, 2020
A series of derivatives of trans-3-(2,4,6-trimethoxyphenyl)4,5-dihydroisoxazolo-4,5-bis[carbonyl-(4′phenyl)thiosemicarbazide (9) and of trans-3-(2,4,6-trimethoxyphenyl)-4,5-dihydro isoxazolo-4,5-bis(aroylcarbohydrazide) (10a–c) were synthesized from ...
Asma Alshamari   +4 more
doaj   +1 more source

Self‐Assembled Gallium Sulfide (GaS) Heterostructures Enabling Efficient Water Splitting and Selective Ammonia Sensing

open access: yesAdvanced Functional Materials, EarlyView.
Gallium sulfide (GaS) forms self‐assembled heterostructures with its native oxide, exhibiting high performance in water splitting and ultrasensitive and selective ammonia detection. Surface defects and controlled oxidation enhance catalytic activity and sensing response.
Danil W. Boukhvalov   +13 more
wiley   +1 more source

Surface Wrinkling of Plasma‐Exposed PDMS is Caused by Water Vapor Sorption: An Optical Environmental Sensor

open access: yesAdvanced Functional Materials, EarlyView.
Wrinkling of soft materials, such as polydimethylsiloxane (PDMS), underpins a myriad of technologies. Plasma‐oxidation of PDMS induces spontaneous wrinkling, which is canonically attributed to thermal expansion‐contraction of bilayers. Employing experiments and modelling, it is demonstrated that sorption of water vapor is instead responsible for ...
Zain Ahmad   +8 more
wiley   +1 more source

Preparation and properties of reproducible carboxyl nitrile rubber ionic network

open access: yesHecheng xiangjiao gongye, 2021
Zinc oxide (ZnO) was added to carboxyl nitrile rubber (XNBR) by in-situ blending in situ reaction to form unsaturated zinc carboxylate, and ionic XNBR was prepared by constructing ion network.
JIAO Sheng-cheng1; YUE Song2; WANG Xiao-tong2; GENG Jie-ting2*
doaj   +1 more source

Oxygen Evolution Reaction by Ni‐Hexacyanoferrates Nanocubes Integrated with Trigonal Selenium: Effect, Properties and Performances

open access: yesAdvanced Functional Materials, EarlyView.
This work describes a novel approach to obtain composite submicrometric structures of nickel hexacyanoferrate integrating trigonal selenium with the aim of enhancing the catalytic efficiency in oxygen evolution reaction (OER). Interestingly, the nanostructures undergo a cube‐to‐sphere transition that optimizes surface properties, leading to superior ...
Edlind Lushaj   +10 more
wiley   +1 more source

Commercial Sodium‐Ion Batteries: Understanding Mechanism and Function Using In Operando Neutron Diffraction and X‐Ray Tomography Studies

open access: yesAdvanced Functional Materials, EarlyView.
In operando neutron diffraction reveals the real‐time structural evolution of O3‐type NaxNi1/3Mn1/3Fe1/3O2 in commercial sodium‐ion batteries that is coupled with electrochemical and tomography data. The study establishes a direct link between current‐dependent phase transitions, lattice kinetics, and electrochemical behavior, offering mechanistic ...
B. D. K. K. Thilakarathna   +4 more
wiley   +1 more source

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