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Related Concept Videos

Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions01:20

Diazonium Group Substitution with Halogens and Cyanide: Sandmeyer and Schiemann Reactions

Arenediazonium substitution reactions occur when the diazonium group is substituted by various functional groups such as halides, hydroxyl, nitrile, etc. For instance, arenediazonium salts react with copper(I) salts of chloride, bromide, or cyanide to form corresponding aryl chlorides, bromides, and nitriles. These reactions are named Sandmeyer reactions. Although the mechanism of this reaction is complicated, as illustrated in Figure 1, they are believed to progress via an aryl copper...
Nucleophilic Aromatic Substitution: Elimination–Addition01:11

Nucleophilic Aromatic Substitution: Elimination–Addition

Simple aryl halides do not react with nucleophiles. However, nucleophilic aromatic substitutions can be forced under certain conditions, such as high temperatures or strong bases. The mechanism of substitution under such conditions involves the highly unstable and reactive benzyne intermediate. Benzyne contains equivalent carbon centers at both ends of the triple bond, each of which is equally susceptible to nucleophilic attack. This 50–50 distribution of products is confirmed through isotopic...
Diazonium Group Substitution: –OH and –H01:19

Diazonium Group Substitution: –OH and –H

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.
Chemotherapy-Induced Nausea and Vomiting: Dopamine Receptor Antagonists01:29

Chemotherapy-Induced Nausea and Vomiting: Dopamine Receptor Antagonists

Dopamine receptor antagonists, also known as antipsychotic agents, are critical in managing chemotherapy-induced vomiting. These antiemetic agents block dopamine receptors in the chemoreceptor trigger zone (CTZ), inhibiting signal transmission to the vomiting center. Antipsychotic agents encompass phenothiazines (PTZ), butyrophenones, benzamides, and thienobenzodiazepines (Zyprexa), which are utilized for their antiemetic and sedative properties.
Phenothiazines, such as prochlorperazine...
Nucleophilic Aromatic Substitution of Aryldiazonium Salts: Aromatic SN101:14

Nucleophilic Aromatic Substitution of Aryldiazonium Salts: Aromatic SN1

Treating arylamines with nitrous acid gives aryldiazonium salts that are effective substrates in nucleophilic aromatic substitution reactions. The diazonio group in these salts can be easily displaced by different nucleophiles, yielding a wide variety of substituted benzenes. The leaving group departs as nitrogen gas, and this easy elimination is the driving force for the substitution reaction.
In the Sandmeyer reaction, for example, the diazonio group is replaced by a chloro, bromo, or cyano...
Nomenclature of Aromatic Compounds with a Single Substituent01:23

Nomenclature of Aromatic Compounds with a Single Substituent

Benzene is the simplest aromatic hydrocarbon or arene. The IUPAC names for simple monosubstituted benzene derivatives are derived by adding the substituent's name as a prefix to the parent benzene. For example, halobenzene, where the halogen could be fluoro (F), chloro (Cl), bromo (Br), and iodo (I).

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Crystal structures and the Hirshfeld surface analysis of <i>(E)</i>-4-nitro-<i>N</i>'-(<i>o</i>-chloro, <i>o</i>- and <i>p</i>-methyl-benzyl-idene)benzene-sulfono-hydrazides.

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Crystal structure and Hirshfeld surface analysis of two (<i>E</i>)-<i>N</i>'-(<i>para</i>-substituted benzyl-idene) 4-chloro-benzene-sulfono-hydrazides.

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Crystal structure and Hirshfeld surface analysis of (<i>E</i>)-<i>N</i>'-[4-(piperidin-1-yl)benzyl-idene]aryl-sulfono-hydrazides.

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Crystal structure and Hirshfeld surface analysis of (<i>Z</i>)-4-chloro-<i>N</i>'-(4-oxo-thia-zol-idin-2-yl-idene)benzene-sulfono-hydrazide monohydrate.

Acta crystallographica. Section E, Crystallographic communications·2018
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Crystal structure and Hirshfeld surface analysis of (<i>E</i>)-<i>N</i>'-benzyl-idene-4-chloro-benzene-sulfono-hydrazide and of its (<i>E</i>)-4-chloro-<i>N</i>'-(<i>ortho</i>- and <i>para</i>-methyl-benzyl-idene)benzene-sulfono-hydrazide derivatives.

Acta crystallographica. Section E, Crystallographic communications·2018

Related Experiment Video

Updated: Jun 5, 2026

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions
19:58

Palladium N-Heterocyclic Carbene Complexes: Synthesis from Benzimidazolium Salts and Catalytic Activity in Carbon-carbon Bond-forming Reactions

Published on: July 30, 2017

N-(3,5-Dichloro-phen-yl)benzamide.

B Thimme Gowda, Sabine Foro, B P Sowmya

    Acta Crystallographica. Section E, Structure Reports Online
    |January 5, 2011
    PubMed
    Summary

    The study reveals the trans conformation of the H-N-C=O unit in a dichloro-substituted benzamide derivative. Molecules form infinite chains via N-H⋯O hydrogen bonds, indicating specific crystal packing in this organic compound.

    Area of Science:

    • Organic Chemistry
    • Crystallography
    • Molecular Structure

    Background:

    • Benzamide derivatives are important in medicinal chemistry and materials science.
    • Understanding the molecular conformation and crystal packing is crucial for predicting compound properties.

    Purpose of the Study:

    • To determine the molecular conformation of a specific dichloro-substituted benzamide derivative.
    • To investigate the intermolecular interactions and crystal structure.

    Main Methods:

    • X-ray crystallography was used to analyze the crystal structure.
    • Analysis of bond angles and dihedral angles to describe the molecular conformation.

    Main Results:

    • The H-N-C=O unit adopts a trans conformation.

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    Preparation and In Vivo Use of an Activity-based Probe for N-acylethanolamine Acid Amidase

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  • Dihedral angles between the amide group and the aromatic rings were quantified.
  • The benzoyl and aniline rings form a dihedral angle of 58.3°.
  • Infinite chains of molecules linked by N-H⋯O hydrogen bonds were observed along the c axis.

    • Conclusions:

    • The study provides detailed structural insights into a dichloro-benzamide derivative.
    • The observed conformation and hydrogen bonding pattern influence the compound's crystal packing.
    • This structural data can inform the design of related organic molecules.