Search research articles

ACERCA DE JoVE

Visión General Liderazgo Blog Centro de Ayuda JoVE

AUTORES

Proceso de Publicación Consejo Editorial Alcance y Políticas Revisión por Pares Preguntas Frecuentes Enviar

BIBLIOTECARIOS

Testimonios Suscripciones Acceso Recursos Consejo Asesor de Bibliotecas Preguntas Frecuentes

INVESTIGACIÓN

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archivo

EDUCACIÓN

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Centro de Recursos para Profesores Sitio de Profesores

Términos y Condiciones de Uso

Política de Privacidad

Videos de Conceptos Relacionados

Hybridization of Atomic Orbitals I

Hybridization of Atomic Orbitals I

The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...

Hybridization of Atomic Orbitals II

Hybridization of Atomic Orbitals II

sp3d and sp3d 2 Hybridization

Catalysis

Catalysis

The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.

Catalysis

Catalysis

Catalysis influences the rate of chemical reactions by providing an alternative reaction pathway with lower activation energy. A catalyst speeds up a reaction, but it is not consumed during the process. The fundamental principle of catalysis is the ability of a catalyst to alter the reaction mechanism, often introducing a more efficient pathway than the uncatalyzed process.In a catalyzed reaction, the catalyst participates directly in the reaction mechanism. It interacts with reactants to form...

Heterogeneous Catalysis

Heterogeneous Catalysis

Heterogeneous catalysis involves a catalyst in a different phase from the reactants. It is a process where the catalyst and the reactants are in distinct phases, typically solid and gas or liquid.Most heterogeneous catalysts are metals, metal oxides, or acids. The list includes transition metals like iron (Fe), cobalt (Co), nickel (Ni), palladium (Pd), platinum (Pt), chromium (Cr), manganese (Mn), tungsten (W), silver (Ag), and copper (Cu). These metals possess partially vacant d orbitals that...

Carbon-dioxide Fixation

Carbon-dioxide Fixation

Carbon dioxide fixation in prokaryotes enables the assimilation of inorganic carbon into organic molecules, supporting biosynthetic pathways, sustaining ecosystems, and contributing to the global carbon cycle. It also has industrial applications in carbon capture and bioproduct synthesis. Autotrophic organisms rely on this process to utilize CO₂ as a carbon source in diverse environments.The Calvin CycleThe Calvin cycle is the most widespread carbon fixation mechanism, primarily used by...

También podría leer

Artículos Relacionados

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

Ordenar por

Same author

Recent Advances in Free Radical Reactions of <i>gem</i>-Bromonitroalkanes.

The Journal of organic chemistry·2025

Same author

Subtle Strain-Release-Driven Aroylation of Four-Membered Rings via Decarboxylative Giese-Type Reactions.

Organic letters·2025

Same author

Photoredox-Catalyzed Decarboxylative Nitro-Mannich Reaction.

Organic letters·2025

Same author

Transition metal-free decarboxylative olefination of carboxylic acid salts.

Chemical science·2024

Same author

Cobalt-Catalyzed Allylic Alkylation at sp<sup>3</sup>-Carbon Centers.

Chemistry (Weinheim an der Bergstrasse, Germany)·2024

Same author

Cobalt-catalyzed decarboxylative difluoroalkylation of nitrophenylacetic acid salts.

Chemical science·2023

Search research articles

Video Experimental Relacionado

Updated: Jul 8, 2026

Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus

Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus

Published on: October 3, 2014

El acoplamiento catalítico descarboxilativo sp-sp3 del acoplamiento.

Dinesh Kumar Rayabarapu¹, Jon A Tunge

¹Department of Chemistry, University of Kansas, Lawrence, Kansas 66045, USA.

Journal of the American Chemical Society

|September 30, 2005

Resumen

Una nueva reacción catalizada por el paladio permite la síntesis de 1,4-enino a través del acoplamiento descarboxilativo. Este método respetuoso con el medio ambiente evita reactivos tóxicos de estaño, ofreciendo una alternativa más ecológica para la síntesis orgánica.

Más Videos Relacionados

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO₂ Reduction

Published on: April 10, 2018

CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light

CO₂ Photoreduction to CH₄ Performance Under Concentrating Solar Light

Published on: June 12, 2019

Videos de Experimentos Relacionados

Last Updated: Jul 8, 2026

Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus

Preparation and Use of Carbonyl-decorated Carbenes in the Activation of White Phosphorus

Published on: October 3, 2014

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO2 Reduction

Synthesis and Performance Characterizations of Transition Metal Single Atom Catalyst for Electrochemical CO₂ Reduction

Published on: April 10, 2018

CO2 Photoreduction to CH4 Performance Under Concentrating Solar Light

CO₂ Photoreduction to CH₄ Performance Under Concentrating Solar Light

Published on: June 12, 2019

Área de la Ciencia:

Química orgánica es la química orgánica.
La catálisis de la catálisis.
Metodología sintética de la metodología sintética.

Sus antecedentes:

Los métodos tradicionales para sintetizar 1,4-eninas a menudo involucran reactivos orgánicos tóxicos.
El desarrollo de rutas sintéticas ecológicamente benignas es un objetivo clave en la química moderna.

Objetivo del estudio:

Desarrollar una nueva reacción de acoplamiento descarboxilativa catalizada por paladio para la síntesis de 1,4-enino.
Establecer una alternativa respetuosa con el medio ambiente a los métodos tradicionales de transmisión.

Principales métodos:

Se utilizó la catálisis del paladio para el acoplamiento descarboxilativo de acetílidos con electrofilos de alilo.
Se realizaron estudios estereoquímicos para elucidar los intermediarios de reacción.

Principales resultados:

Desarrolló con éxito una síntesis de 1,4-enino catalizada por paladio.
Identificó los acetiluros de paladio-alilo como intermediarios clave a través del análisis estereoquímico.
Metalización descarboxilativa demostrada como una alternativa viable y más ecológica a los reactivos a base de estaño.

Conclusiones:

La metalización descarboxilativa proporciona una vía eficiente y respetuosa con el medio ambiente para la síntesis de 1,4-enieno.
Esta metodología ofrece una alternativa sostenible a las reacciones de acoplamiento organometálico tradicionales.