Video Experimental Relacionado
Updated: Jan 18, 2026
06:00
One-pot Microwave-assisted Conversion of Anomeric Nitrate-esters to Trichloroacetimidates
Published on: January 15, 2018
7.9K
Progreso reciente en la síntesis de compuestos energéticos funcionalizados con grupos
Mingren Fan1,2, Weiqing She1,2, Xiu'e Jiang1,2
1School of Astronautics, Northwestern Polytechnical University, Xi'an, China.
ChemPlusChem
|January 15, 2026
Resumen
Esta revisión detalla compuestos energéticos de trinitrometilo/gem-dinitrometilo, centrándose en el diseño molecular y la síntesis. La integración de estos grupos en marcos heterocíclicos conjugados mejora la densidad de energía y la estabilidad.
Área de la Ciencia:
- Química Orgánica
- Ciencia de Materiales
- Materiales Energéticos
Sus antecedentes:
- Los compuestos energéticos son cruciales para diversas aplicaciones.
- El desarrollo de materiales de alta densidad de energía requiere un equilibrio entre seguridad y rendimiento.
- Los grupos trinitrometilo y gem-dinitrometilo ofrecen propiedades únicas para materiales energéticos.
Objetivo del estudio:
- Revisar los avances recientes en compuestos energéticos funcionalizados con trinitrometilo/gem-dinitrometilo.
- Analizar las estrategias de diseño molecular y las rutas sintéticas.
- Evaluar las relaciones estructura-rendimiento de materiales energéticos novedosos.
Principales métodos:
- Descripción general de esqueletos moleculares que incluyen heterociclos monocíclicos, fusionados, enlazados y en puente, y sales iónicas.
- La síntesis predominante implica la nitración de grupos precursores (ciano, acetato de etilo, acetona).
- Técnicas de edición del esqueleto molecular para la construcción concurrente del marco y la incorporación de grupos energéticos.
Principales resultados:
- La edición del esqueleto molecular ofrece un método más seguro y eficiente para integrar funcionalidades energéticas.
- Los marcos moleculares extensamente conjugados son clave para equilibrar la seguridad y la densidad de energía.
- El diseño racional que involucra esqueletos heterocíclicos conjugados y grupos polinitrometilo mejora la energía y la estabilidad.
Conclusiones:
- La integración de grupos trinitrometilo/gem-dinitrometilo en sistemas heterocíclicos conjugados es una estrategia prometedora.
- La expansión de las estructuras conjugadas planares mejora aún más el diseño de compuestos energéticos.
- Este enfoque facilita el desarrollo de compuestos energéticos novedosos con alto contenido de energía y estabilidad.
Videos de Conceptos Relacionados
01:19Diazonium Group Substitution: –OH and –H
3.3K
Nitrous acid, a weak acid, is prepared in situ via the reaction of sodium nitrite with a strong acid under cold conditions. This nitrous acid prepared in situ reacts with primary arylamines to form arenediazonium salts. Such reactions are known as diazotization reactions. As shown in Figure 1, the formation of arenediazonium salts begins with the decomposition of nitrous acid in an acidic solution to give nitrosonium ions.
3.3K
01:12Preparation of Nitriles
2.6K
One of the common methods to prepare nitriles is the dehydration of amides. This method requires strong dehydrating agents like phosphorous pentoxide or boiling acetic anhydride for converting amides to nitriles. Another reagent namely, thionyl chloride also accomplishes the dehydration of amides, where amide acts as a nucleophile. The first step of the mechanism involves the nucleophilic attack by the amide on the thionyl chloride to form an intermediate. In the next step, the electron pairs...
2.6K
01:13meta-Directing Deactivators: –NO2, –CN, –CHO, –CO2R, –COR, –CO2H
6.5K
All meta-directing substituents are deactivating groups. These substituents withdraw electrons from the aromatic ring, making the ring less reactive toward electrophilic substitution. For example, the nitration of nitrobenzene is 100,000 times slower than that of benzene because of the deactivating effect of the nitro group. The first step in an electrophilic aromatic substitution is the addition of an electrophile to form a resonance-stabilized carbocation. The energy diagrams for...
6.5K
01:20Electrophilic Aromatic Substitution: Nitration of Benzene
8.2K
The nitration of benzene is an example of an electrophilic aromatic substitution reaction. It involves the formation of a very powerful electrophile, the nitronium ion, which is linear in shape. The reaction occurs through the interaction of two strong acids, sulfuric and nitric acid.
8.2K
01:28Preparation of 1° Amines: Gabriel Synthesis
4.5K
Direct alkylation is not a suitable method for synthesizing amines because it produces polyalkylated products. Gabriel synthesis is the most preferred method to exclusively make primary amines. The method uses phthalimide, which contains a protected form of nitrogen that participates in alkylation only once to predominantly give primary amines.
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...
Strong bases like NaOH or KOH deprotonate the phthalimide to form the corresponding anion, which acts as a nucleophile. Further, the anion attacks an...
4.5K
02:27Preparation of Alkynes: Alkylation Reaction
12.0K
Introduction
Alkylation of terminal alkynes with primary alkyl halides in the presence of a strong base like sodium amide is one of the common methods for the synthesis of longer carbon-chain alkynes. For example, treatment of 1-propyne with sodium amide followed by reaction with ethyl bromide yields 2-pentyne.
Alkylation of terminal alkynes with primary alkyl halides in the presence of a strong base like sodium amide is one of the common methods for the synthesis of longer carbon-chain alkynes. For example, treatment of 1-propyne with sodium amide followed by reaction with ethyl bromide yields 2-pentyne.
12.0K