Results 71 to 80 of about 82,507 (282)

Synthesis of Functionalized 3‑Spiro[cyclopropa[a]pyrrolizine]- and 3‑Spiro[3-azabicyclo[3.1.0]hexane]oxindoles from Cyclopropenes and Azomethine Ylides via [3 + 2]-Cycloaddition

open access: yes, 2017
3-Spiro­[cyclopropa­[a]­pyrrolizine]- and 3-spiro­[3-aza­bicyclo­[3.1.0]­hexane]­oxindoles were prepared in moderate to high yields via one-pot three-component reactions using substituted isatins, α-amino acids, and cyclopropenes.
Alexander V. Stepakov (3610274)   +7 more
core   +1 more source

Molecular Bridges for 2D Nanomaterials

open access: yesAdvanced Functional Materials, EarlyView.
Molecular cross‐linking provides a versatile strategy to engineer interfaces in 2D materials. By tuning the linker backbone, binding mode, and interflake spacing, molecular bridges can regulate charge transport, mechanical integrity, chemical functionality, and processing.
Yudhajit Bhattacharjee   +3 more
wiley   +1 more source

Charge-Transfer Cycloaddition of Homobenzvalene with Tetracyanoethylene [PDF]

open access: yes, 1990
The transient yellow color observed in the cycloaddition of homobenzvalene (HB) with tetracyanoethylene (TCNE) is associated with the charge-transfer complex [HB, TCNE).
Kochl, J. K., Kim, E., Christl, Manfred
core   +1 more source

On the Mechanism of Nitrosoarene−Alkyne Cycloaddition [PDF]

open access: yesJournal of the American Chemical Society, 2008
The thermal reaction between nitrosoarenes and alkynes produces N-hydroxyindoles as the major products. The mechanism of these novel reactions has been probed using a combination of experimental and computational methods. The reaction of nitrosobenzene (NB) with an excess of phenyl acetylene (PA) is determined to be first order in each reactant in ...
PENONI, ANDREA   +5 more
openaire   +2 more sources

Multiplexed Detection of Respiratory Viruses Using Surface Plasmon Resonance Spectroscopy With Ultrathin Carbon Nanomembranes

open access: yesAdvanced Healthcare Materials, EarlyView.
An ultrathin azide‐functionalized carbon nanomembrane (N3‐CNM) provides a versatile biointerface for antibody immobilization on gold SPR sensors. Integrated with a multichannel SPR platform, the functionalized surface enables label‐free, simultaneous detection of SARS‐CoV‐2, Influenza A, and RSV antigens, demonstrating the potential of CNM‐based ...
Ghazaleh Eshaghi   +6 more
wiley   +1 more source

Synthesis of highly functionalized β-aminocyclopentanecarboxylate stereoisomers by reductive ring opening reaction of isoxazolines

open access: yesBeilstein Journal of Organic Chemistry, 2012
A rapid and simple procedure was devised for the synthesis of multifunctionalized cyclic β-amino esters and γ-amino alcohols via the 1,3-dipolar cycloaddition of nitrile oxides to β-aminocyclopentenecarboxylates.
Melinda Nonn   +3 more
doaj   +1 more source

Recent Progress in Nitro-Promoted Direct Functionalization of Pyridones and Quinolones

open access: yesMolecules, 2020
Nitro group is one of the most important functional groups in organic syntheses because its strongly electron-withdrawing ability activates the scaffold, facilitating the reaction with nucleophilic reagents or the Diels−Alder reaction.
Feiyue Hao, Nagatoshi Nishiwaki
doaj   +1 more source

Synthesis of 4-Arylselanyl-1H-1,2,3-triazoles from Selenium-Containing Carbinols

open access: yesMolecules, 2021
In this work, we present a simple way to achieve 4-arylselanyl-1H-1,2,3-triazoles from selenium-containing carbinols in a one-pot strategy. The selenium-containing carbinols were used as starting materials to produce a range of selanyl-triazoles in ...
Francesca Begini   +6 more
doaj   +1 more source

“Smelltronics”—From Gas to Smell Sensing

open access: yesAdvanced Materials, EarlyView.
The emerging field of smelltronics, encompassing sensing technologies for complex volatile organic compounds, holds significant potential for extracting valuable chemical information. It facilitates the noninvasive, real‐time monitoring of humans, food, and the environment.
Takeshi Ono   +7 more
wiley   +1 more source

Dirhodium(II)-catalyzed [3 + 2] cycloaddition of N-arylaminocyclopropane with alkyne derivatives

open access: yesBeilstein Journal of Organic Chemistry, 2019
Dirhodium(II) complex-catalyzed [3 + 2] reactions between N-arylaminocyclopropanes and alkyne derivatives are described. The cycloaddition products proved to be versatile synthetic intermediates.
Wentong Liu   +4 more
doaj   +1 more source

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