Jove
Visualize
Contáctanos

Videos de Conceptos Relacionados

ortho–para-Directing Deactivators: Halogens01:24

ortho–para-Directing Deactivators: Halogens

6.2K
Halogens are ortho–para directors. They are more electronegative than carbon. Therefore, as ring substituents, they can withdraw electrons through the inductive effect and deactivate the aromatic ring towards electrophilic substitution. Halogens also have an electron-donating resonance effect on the ring, which influences the orientation of the incoming electrophile. If an electrophile attacks at the ortho or the para position, the halogen donates electrons and stabilizes the intermediate...
6.2K
Deactivation Processes: Jablonski Diagram01:25

Deactivation Processes: Jablonski Diagram

1.3K
Luminescence, the emission of light by a substance that has absorbed energy, is a process that involves the interaction of molecules with light. The energy-level diagram, or Jablonski diagram, is a graphical representation of these interactions, illustrating the various states and transitions a molecule can undergo. In a typical Jablonski diagram, the lowest horizontal line represents the ground-state energy of the molecule, which is usually a singlet state. This state represents the energies...
1.3K
Special Staining Techniques01:13

Special Staining Techniques

790
Specialized staining techniques play a vital role in microbiology by enabling the visualization of specific bacterial structures that remain undetectable with standard microscopy methods. These techniques not only enhance the structural visualization of bacterial cells but also provide critical insights into their pathogenicity and classification. Additionally, they support diagnostic and research endeavors in microbiology by identifying key bacterial features.Capsule Staining for Virulence...
790
Blinding01:11

Blinding

3.6K
Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
3.6K
Sublimation01:03

Sublimation

2.3K
Sublimation is the direct transformation of a solid to a gaseous state. For instance, at standard pressure and room temperature, solid carbon dioxide sublimes to gaseous carbon dioxide. The phase diagram depicts the conditions required for sublimation. This process occurs at the solid-gas phase boundary and is not observed above the triple point of the substance. The reverse of sublimation is called deposition, where a gaseous substance condenses directly into a solid. Sublimation and...
2.3K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Dianionic Tetraalkynylmagnesate Complexes: A Strategy for Propargyl Amine Synthesis.

Organic letters·2026
Same author

Copper-mediated stepwise polymerization of benzynes: construction of amphiphilic block copolymers and their self-assembly in water.

RSC advances·2026
Same author

Enantioselective Synthesis of Axially Chiral Diaryl Ethers via Rhodium-Catalyzed [2 + 2 + 2] Cycloaddition.

Angewandte Chemie (International ed. in English)·2026
Same author

pH-Triggered, Time-Programmable Fluorescence within an Assembly-Free Single-Molecule System.

The Journal of organic chemistry·2026
Same author

Photoinduced Hydrogenative Dearomatization With Homocoupling of Quinolines to Construct Octahydro-4,4'-biquinolines.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
Same author

A DFT Study on the Mechanism of Selective Formation of Substituted Azepines From 1-Azabutadienes and Cyclopropanes.

Chemistry (Weinheim an der Bergstrasse, Germany)·2026
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Video Experimental Relacionado

Updated: Nov 11, 2025

Bioluminescent Optogenetics 2.0: Harnessing Bioluminescence to Activate Photosensory Proteins In Vitro and In Vivo
07:19

Bioluminescent Optogenetics 2.0: Harnessing Bioluminescence to Activate Photosensory Proteins In Vitro and In Vivo

Published on: August 4, 2021

5.0K

Estanillación de iluminación

Kyoka Sakamoto1, Yuki Nagashima1,2, Chao Wang1

  • 1Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.

Journal of the American Chemical Society
|March 26, 2021
PubMed
Resumen
Este resumen es generado por máquina.

Desarrollamos un nuevo método fotocatalítico para reacciones de estanilización. Este enfoque utiliza aniones de estanilo fotoexcitados para crear especies diradicales únicas, lo que permite una hidrostanilación eficiente y una defluorostanilación con altos rendimientos.

Más Videos Relacionados

Visualizing the Actin and Microtubule Cytoskeletons at the B-cell Immune Synapse Using Stimulated Emission Depletion STED Microscopy
11:00

Visualizing the Actin and Microtubule Cytoskeletons at the B-cell Immune Synapse Using Stimulated Emission Depletion STED Microscopy

Published on: April 9, 2018

14.2K
Visualization of the Immunological Synapse by Dual Color Time-gated Stimulated Emission Depletion STED Nanoscopy
10:00

Visualization of the Immunological Synapse by Dual Color Time-gated Stimulated Emission Depletion STED Nanoscopy

Published on: March 24, 2014

78.3K

Videos de Experimentos Relacionados

Last Updated: Nov 11, 2025

Bioluminescent Optogenetics 2.0: Harnessing Bioluminescence to Activate Photosensory Proteins In Vitro and In Vivo
07:19

Bioluminescent Optogenetics 2.0: Harnessing Bioluminescence to Activate Photosensory Proteins In Vitro and In Vivo

Published on: August 4, 2021

5.0K
Visualizing the Actin and Microtubule Cytoskeletons at the B-cell Immune Synapse Using Stimulated Emission Depletion STED Microscopy
11:00

Visualizing the Actin and Microtubule Cytoskeletons at the B-cell Immune Synapse Using Stimulated Emission Depletion STED Microscopy

Published on: April 9, 2018

14.2K
Visualization of the Immunological Synapse by Dual Color Time-gated Stimulated Emission Depletion STED Nanoscopy
10:00

Visualization of the Immunological Synapse by Dual Color Time-gated Stimulated Emission Depletion STED Nanoscopy

Published on: March 24, 2014

78.3K

Área de la Ciencia:

  • Química orgánica
  • La fotoquímica
  • Catálisis

Sus antecedentes:

  • Las reacciones de estanilización son cruciales en la síntesis orgánica.
  • Los métodos existentes a menudo requieren catalizadores o condiciones duras.
  • La reactividad de los aniones de estanilo es típicamente limitada.

Objetivo del estudio:

  • Desarrollar un nuevo método sin catalizadores para las reacciones de estanilización.
  • Para explorar la reactividad única de las especies de estanilo fotoexcitadas.
  • Para lograr una hidrostanilización y una defluorostanilización lineal y selectiva.

Principales métodos:

  • Fotoexcitación de aniones de estanilo a un estado triplo (T1) diradical.
  • Aplicación de este método a las alquinas y fluoroarenos terminales.
  • Optimización de las condiciones de reacción para el rendimiento y la selectividad.

Principales resultados:

  • Desarrollo exitoso de las reacciones de estanilización fotomoduladas.
  • Demostración de la hidrostanilización lineal y selectiva de las alquinas terminales.
  • Desfluorostanilación eficiente de los fluoroarenos.
  • Se observó una reactividad y una selectividad sin precedentes en las especies diradicales de T1-stannyl.

Conclusiones:

  • Las especies de radicales de estanilo con fotoboost ofrecen una reactividad distinta en comparación con los aniones y los radicales.
  • Esta metodología es operacionalmente simple, exhibe una amplia tolerancia de grupo funcional y tiene un alto rendimiento.
  • La naturaleza libre de catalizadores de esta reacción la convierte en una alternativa atractiva para la estanilización.