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Related Concept Videos

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.
Electrophilic Aromatic Substitution: Sulfonation of Benzene01:22

Electrophilic Aromatic Substitution: Sulfonation of Benzene

Sulfonation of benzene is a reaction wherein benzene is treated with fuming sulfuric acid at room temperature to produce benzenesulfonic acid. Fuming sulfuric acid is a mixture of sulfur trioxide and concentrated sulfuric acid.
Aryldiazonium Salts to Azo Dyes: Diazo Coupling01:11

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the para position.
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.
Reactions at the Benzylic Position: Halogenation01:11

Reactions at the Benzylic Position: Halogenation

Benzylic halogenation takes place under conditions that favor radical reactions such as heat, light, or a free radical initiator like peroxide.
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene01:13

Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene

Bromination and chlorination of aromatic rings by electrophilic aromatic substitution reactions are easily achieved, but fluorination and iodination are difficult to achieve. Fluorine is so reactive that its reaction with benzene is difficult to control, resulting in poor yields of monofluoroaromatic products. To address this, Selectfluor reagent is used as a fluorine source in which a fluorine atom is bonded to a positively charged nitrogen.

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Related Experiment Video

Updated: Jun 22, 2026

Synthesis of a Borylated Ibuprofen Derivative Through Suzuki Cross-Coupling and Alkene Boracarboxylation Reactions
08:56

Synthesis of a Borylated Ibuprofen Derivative Through Suzuki Cross-Coupling and Alkene Boracarboxylation Reactions

Published on: November 30, 2022

[Benzonase--possibility of practical application].

Marcin Olszewski1, Paweł Filipkowski

  • 1Technologii i Biotechnologii Zywności, Wydział Chemiczny, Politechnika Gdańska, Gdańska. molszewski@pg.gda.pl

Postepy Biochemii
|June 12, 2009
PubMed
Summary

Benzonase nuclease effectively degrades nucleic acids for protein preparation in microcalorimetry. This method optimizes samples for thermal analysis without damaging protein structures.

Area of Science:

  • Biochemistry
  • Molecular Biology
  • Analytical Chemistry

Context:

  • Microcalorimetry requires pure protein samples free from nucleic acids.
  • Traditional methods for nucleic acid removal can be time-consuming or damage protein structure.
  • Benzonase nuclease offers a potential solution for rapid and non-destructive sample preparation.

Purpose:

  • To evaluate the efficacy of Benzonase nuclease in preparing proteins for microcalorimetric analysis.
  • To determine if Benzonase nuclease treatment impacts protein integrity and subsequent thermal measurements.
  • To establish a streamlined protocol for protein purification using enzymatic degradation of DNA and RNA.

Summary:

  • Benzonase nuclease, an enzyme that degrades DNA and RNA, was tested for its utility in preparing proteins for microcalorimetry.

More Related Videos

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

Related Experiment Videos

Last Updated: Jun 22, 2026

Synthesis of a Borylated Ibuprofen Derivative Through Suzuki Cross-Coupling and Alkene Boracarboxylation Reactions
08:56

Synthesis of a Borylated Ibuprofen Derivative Through Suzuki Cross-Coupling and Alkene Boracarboxylation Reactions

Published on: November 30, 2022

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

  • The study assessed the enzyme's ability to remove nucleic acids without causing photolytic damage to proteins.
  • Results indicate successful nucleic acid degradation, preparing proteins for sensitive thermal analysis.

    • Impact:

    • Provides a novel method for sample preparation in biophysical characterization.
    • Enhances the efficiency of preparing protein samples for microcalorimetry.
    • Facilitates more accurate and reliable calorimetric data by ensuring sample purity.