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Related Concept Videos

Hydrolysis of Chlorobenzene to Phenol: Dow Process01:10

Hydrolysis of Chlorobenzene to Phenol: Dow Process

Simple aryl halides do not react with nucleophiles under normal conditions. However, the reaction can proceed under drastic conditions involving high temperatures and high pressure to give the substituted products. For example, chlorobenzene is converted to phenol using aqueous sodium hydroxide at 350 °C under high pressure by the Dow process. The reaction follows an elimination-addition mechanism involving a benzyne intermediate. Here, the chloride ion is eliminated to generate the benzyne...
Hydroboration-Oxidation of Alkenes03:08

Hydroboration-Oxidation of Alkenes

In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.
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...
Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism01:18

Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism

Birch reduction uses solvated electrons as reducing agents. The reaction converts benzene to 1,4-cyclohexadiene. The reaction proceeds by the transfer of a single electron to the ring to form a benzene radical anion. This anion is highly basic—it abstracts a proton from the alcohol to form a cyclohexadienyl radical. Another single electron transfer gives the cyclohexadienyl anion. A proton transfer from the alcohol forms 1,4-cyclohexadiene. Since this reduction occurs via radical anion...
Reactions at the Benzylic Position: Oxidation and Reduction00:59

Reactions at the Benzylic Position: Oxidation and Reduction

The benzylic position describes the position of a carbon atom attached directly to a benzene ring. Benzene by itself does not undergo oxidation. In contrast, the benzylic carbon is quite reactive in the presence of strong oxidizing agents such as KMnO4 or H2CrO4. Therefore, alkylbenzenes are readily oxidized to benzoic acid, irrespective of the type of alkyl groups.
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.

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Updated: Jun 1, 2026

Protocol for the Synthesis of Ortho-trifluoromethoxylated Aniline Derivatives
08:43

Protocol for the Synthesis of Ortho-trifluoromethoxylated Aniline Derivatives

Published on: January 19, 2016

4-Methoxy-benzohydrazide.

Uzma Ashiq, Rifat Ara Jamal, Muhammad Nawaz Tahir

    Acta Crystallographica. Section E, Structure Reports Online
    |May 18, 2011
    PubMed
    Summary
    This summary is machine-generated.

    This study reveals that the title compound, C(8)H(10)N(2)O(2), achieves stability through multiple intermolecular hydrogen bonds. Intramolecular interactions also contribute to its structural integrity.

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    Area of Science:

    • Chemical crystallography
    • Molecular structure analysis

    Background:

    • Understanding intermolecular forces is crucial for predicting material properties.
    • Hydrogen bonding plays a significant role in molecular stabilization and crystal packing.

    Purpose of the Study:

    • To elucidate the intermolecular and intramolecular interactions in the title compound C(8)H(10)N(2)O(2).
    • To characterize the hydrogen bonding network within the crystal structure.

    Main Methods:

    • Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
    • Analysis of hydrogen bond distances and angles was performed.

    Main Results:

    • The title compound C(8)H(10)N(2)O(2) is stabilized by three intermolecular hydrogen bonds (N-H⋯O and N-H⋯N).
    • Two intramolecular interactions (N-H⋯O and C-H⋯O) were identified, contributing to the compound's conformation.
    • The crystal structure exhibits a well-defined hydrogen bonding network.

    Conclusions:

    • The observed hydrogen bonding patterns dictate the stability and structural organization of C(8)H(10)N(2)O(2).
    • This detailed structural analysis provides fundamental insights into the factors governing molecular interactions in organic compounds.