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Related Concept Videos

Preparation of Amines: Reduction of Oximes and Nitro Compounds01:29

Preparation of Amines: Reduction of Oximes and Nitro Compounds

Oximes can be reduced to primary amines using catalytic hydrogenation, hydride reduction, or sodium metal reduction. The reduction of aliphatic and aromatic nitro compounds to primary amines takes place by either catalytic hydrogenation or by using active metals like Fe, Zn, and Sn in the presence of an acid.
Though catalytic hydrogenation can reduce nitrobenzenes, the reduction is nonselective in the presence of other functional groups. For instance, if nitrobenzene contains an aldehyde group,...
Nitrosation of Enols01:19

Nitrosation of Enols

The nitrosation reaction is one of the methods of preparing 1,2-diketones. The enol tautomer of the starting ketone reacts with sodium nitrite in hydrochloric acid, generating the 1,2-diketone after hydrolysis.
Preparation of Epoxides03:00

Preparation of Epoxides

Overview
Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin cyclization.
Epoxidation with Peroxy Acids
Epoxidation of alkenes via oxidation with peroxy acids involves the conversion of a carbon–carbon double bond to an epoxide using the oxidizing agent meta-chloroperoxybenzoic acid, commonly known as MCPBA. Since the O–O bond of peroxy acids is very weak, the addition of electrophilic oxygen of peroxy acids to...
Electrophilic Aromatic Substitution: Nitration of Benzene01:20

Electrophilic Aromatic Substitution: Nitration of Benzene

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.
Structure and Nomenclature of Epoxides02:38

Structure and Nomenclature of Epoxides

Cyclic ethers are heterocyclic compounds with an oxygen atom in the ring along with carbon atoms. They are named depending on the number of carbon atoms present in their ring system. Cyclic ethers with a three-membered ring system are called “oxirane”, four-membered ring systems as “oxetane”, five-membered ring systems as “oxolane”, and six-membered ring systems as “oxane”. The cyclic structure of these rings imposes angle strain, and this strain is more in the ring having a smaller number of...
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.

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Related Experiment Video

Updated: Jun 1, 2026

A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones
07:30

A Direct, Regioselective and Atom-Economical Synthesis of 3-Aroyl-N-hydroxy-5-nitroindoles by Cycloaddition of 4-Nitronitrosobenzene with Alkynones

Published on: January 21, 2020

(E)-4-Nitro-benzaldehyde oxime.

Asghar Abbas, Safdar Hussain, Noureen Hafeez

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

    This study details the crystal structure of a novel compound, C(7)H(6)N(2)O(3). Molecular analysis reveals specific dihedral angles and intermolecular hydrogen bonds forming dimers in its crystal lattice.

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

    Published on: November 23, 2016

    Area of Science:

    • Crystallography
    • Molecular structure analysis
    • Supramolecular chemistry

    Background:

    • Understanding molecular arrangements is key in materials science.
    • Hydrogen bonding plays a crucial role in crystal packing.
    • Dihedral angles influence molecular conformation and interactions.

    Purpose of the Study:

    • To elucidate the crystal structure of the compound C(7)H(6)N(2)O(3).
    • To analyze the molecular geometry and intermolecular interactions.
    • To characterize the hydrogen bonding network and resulting supramolecular architecture.

    Main Methods:

    • Single-crystal X-ray diffraction was employed to determine the crystal structure.
    • Analysis of dihedral angles between molecular planes and the benzene ring.
    • Identification and characterization of intermolecular hydrogen bonds using graph-set notation.

    Main Results:

    • The molecular structure of C(7)H(6)N(2)O(3) was determined.
    • Specific dihedral angles of 5.47(5)° (CNO) and 8.31(5)° (ONO) with the benzene ring were observed.
    • Intermolecular O-H⋯N hydrogen bonds were identified, forming centrosymmetric dimers with an R(2)(2)(6) graph-set motif.

    Conclusions:

    • The crystal structure of C(7)H(6)N(2)O(3) is characterized by specific dihedral angles.
    • The identified hydrogen bonding network dictates the formation of supramolecular dimers.
    • This structural information contributes to the understanding of molecular assembly in organic crystals.